How To Grow Autoflower Weed Seeds

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What are the biggest mistakes you can make when growing autoflowering cannabis? Read the basics and find out how to take care of your strain's buds. Wondering how to grow autoflowering marijuana strains or looking where to buy it? In this guide, we explain all you need to know. What are auto-flowering strains and what should you expect when you grow one? Learn what you need to know and get the pros and cons of auto-flowering vs photoperiod strains, and get grow tips and secrets to getting better yields/potency!

9 Mistakes To Avoid When Growing Autoflowering Cannabis

Autoflowers are too easy to grow if you avoid these 9 common mistakes. Find out if you’re growing autoflowering cannabis plants the right way in this article.

  • 1. Knowing the basics
  • 2. Time it right
  • 3. Germination
  • 4. Choose the right medium
  • 5. Choose good containers
  • 6. Do not transplant
  • 7. Over and under-watering
  • 8. Overfeeding and underfeeding
  • 8. a. Macro and micronutrients
  • 8. b. Ph levels
  • 9. Harvest at the right time
  • 10. Frequently asked questions about autoflowers
  • 11. In conclusion

Autoflower cannabis has always sparked debates among growers in the cannabis community. Due to a dearth of knowledge or experience, many growers avoid growing autoflowers. Beginners are expected to only grow photoperiod plants, and while the fear of something new and unexpected is understandable, you might discover something more amazing if you just try. Autoflowers are really easy to grow but there are basic guidelines you should know, just like when growing other plants or vegetables. All plants are different and even though you can successfully harvest the first time you grow cannabis, there are common mistakes that are better to avoid. If you’re new to autoflower growing and are looking for an autoflower grow guide or want to know how to grow autoflowering strains, here are a couple of tips to have you growing in no time.

1. Knowing the basics

To set things straight, let’s begin by saying that autoflowers are really easy to grow. In fact, beginners can try growing autoflowers with little to no experience as long as they understand the basics 1 . And this is true for all plants. Can you expect to grow tomatoes if you’re clueless about using nutrients? Or, can you harvest cucumbers if you don’t even know when to harvest them? No? Similarly, autoflowers need you to follow a few basic guidelines like other plants, and you’ll do just fine if you take the time to understand them.

But what makes autoflowering cannabis cultivars so easy to grow? Well, there are a few beginner-friendly traits that set them apart from their photoperiod cousins. For one, they descend from a type of cannabis—known as cannabis ruderalis—that adapted to the harsh conditions of Siberia. All autos possess Ruderalis genetics, which endows them with impressive hardiness, good pest and disease resistance, and rapid growing times. If you’re an indoor grower, you won’t even need to adjust the light cycle to get them to flower. Now that you’re more familiar with autoflowering genetics, let’s take a look at what mistakes to avoid to achieve the best outcome possible.

After all, a plant that gives you lip-smacking buds in just 2 months deserves some research, eh? Autoflowers may scare you at first, but if you avoid a few common mistakes, you’ll harvest much more than you can imagine, and it only gets better.

2. Time it right

Timing is everything if you’re planning to grow autoflowers outdoors. Since autoflowers don’t depend on light to flower, you don’t need to worry too much. But, planting too early will generate smaller yields and planting too late affects yields too.

Frost must be avoided at all costs. Typically, most growers begin planting when spring is just around the corner. Depending on where you live, you can plant the seeds as soon as the frost clears. If you reside in a location that doesn’t receive any snow, go ahead and plant when the temperatures range between 22°C to 28°C (71°F to 77°F).

If you live in a particularly cold region, there are steps you can take to protect your plants from the threat of late frosts. Of course, starting seeds indoors will help here. Plus, doing so will help to speed up germination times. Moving them out into greenhouses and polytunnels will add an additional layer of protection as the seasonal frosts begin to wane. If you have no choice but to move them outdoors under the sky, consider covering young plants with bell cloches and mulching the surrounding soil with hay or straw as a form of insulation.

You can also leverage timing to take advantage of successive harvests. Staggering sowings by two weeks till break up the work that awaits come harvest time. It will help you space out all of that trimming, drying, and curing into easily manageable portions. Bigger plants can tolerate much higher temperatures but tender seedlings will succumb to extreme temperatures. Remember to avoid rainy seasons since the plant doesn’t receive too much light. Of course, the timing doesn’t matter if growing indoors, so sow those seeds whenever you wish!

3. Germination

For beginners, germinating the seeds is an important part of the entire process. To get better results, soak the seeds in plain water for at least 24 hours and wrap them in moist paper towels for a day or two. Use a ziplock bag to store the towels.

By soaking your seeds up to 48hrs and then keeping them in a moist paper towel you guarantee successful germination.

It’s important to keep the towels moist because the seeds can rot if there’s too much water. Similarly, the seeds won’t sprout if the towels are completely dry. Don’t make the mistake of directly planting the seeds, especially if you’re doing it for the first time. Once the seeds show a tap root, plant the seeds in the final container. Despite having to keep the seeds in damp paper towels, make sure they are not completely wet, too much water can rot the seeds. The best way to identify this is by smell if the paper towels start to smell like mold, immediately take them out and change the towels.

Sebastian Good gives you all the essential information about germination of autoflowering cannabis seeds.

Depending on your experience, you can also germinate your seeds directly in the medium, just make sure you’re not overwatering it because you can end up drowning your seeds. As you can see in the video, germinating in the soil is easy and doesn’t require anything extra, just be careful and you’ll see a seedling coming out of the ground in a couple of days.

4. Choose the right medium

Growing plants in hydroponic setups seem very cool, but soil is your best bet if you have no experience. Avoid using clay soils that clump up because autoflowers thrive in well-aerated soil. A soilless medium of equal parts of peat moss or coco peat, perlite, some airy soil, and sand is the best potting mix for autoflowers. If you don’t want to bother about fertilizing at all, you can even try growing autoflowers organically. There are various ways to make your own organic soil, but you can buy some in your local store to start with. Organic soil is premised with nutrients, so it’s ideal for someone that doesn’t have a lot of time. For growers that don’t mind putting in the efforts, composting and building super soil is the best soil mix for autoflowers.

There are a variety of different techniques to create healthy compost loaded with organic matter and beneficial microorganisms. If you can get your hands on enough green (grass cuttings, food scraps, coffee grounds, manure) and brown materials (cardboard, paper, woodchips) to fill a compost bin immediately, you can create a hot compost pile that will produce an excellent growing medium in as little as a few weeks. Simply add 50% green material and 50% brown material, stack them in alternating layers, and turn and water occasionally.

If growing outdoors, till the soil well and amend it with organic nutrients to produce a happy, healthy plant. But, no matter what you do while growing indoors, stay away from old used soil or sterilize it before you plant seeds to prevent diseases. If you have the luxury of a garden, you can leverage biodiversity in your favor to produce incredible auto specimens. Consider sowing companion plants such as basil, chamomile, and yarrow nearby to attract beneficial insects that will help to keep pest species away. If you live in a hot climate, low-growing ground cover plants such as winter squash will help to cast a shadow over the soil and, in doing so, boost moisture retention and reduce the amount of watering you have to do.

5. Choose good containers

Please don’t stuff seeds in plastic containers that make life hell for the poor roots. Use porous containers such as fabric pots or even Airpots to help the plants grow as much as possible. Autoflowers are typically small, but they need containers that are at least 5-8 liters in size.

Roots also need oxygen, although they need water to absorb nutrients, a lack of oxygen can damage and kill your plants.

Bigger autoflowers need bigger containers, so make sure you check the description before purchasing seeds. Root aeration is often overlooked, but it’s an important factor in determining your yields.

The appropriate pot size can also help you control the height of your cannabis plants, usually, a 12L pot will allow your plant to develop to its maximum, an auto in a 7L pot will grow up to 70cm and in a 3L pot will grow around 40cm.

If you’re growing autos outdoors in a warm climate, your containers will dry out fast—especially during heatwaves. To help improve water retention, consider applying a layer of mulch onto the top of your growing medium. Straw, hay, or leaf litter helps to produce more of a natural growing environment—how much bare soil do you see when walking through the forest? As well as breaking down and feeding soil microbes over time, these materials shield the top layer of soil from the sun and reduce water loss via evaporation.

6. Do not transplant

It’s important to start autoflowers in their final containers rather than planting them in smaller ones and transplanting them later. Sure, growing cannabis is like growing tomatoes, but autoflowers have a limited time period and can’t afford to lose days while the plant settles and searches for roots.

Some growers use small plastic cups to plant seeds. While this method may work with photoperiod plants, it’s not recommended for autoflowers. If you’re already committed the mistake of planting them in small containers, try to transplant the plant only when the soil is moist. If the soil is too wet, the roots tend to break, and if it’s too dry, transplanting becomes a pain. Of course, experienced growers do transplant autoflowers but it’s not really necessary.

7. Over and under-watering

Most plants die if you over or under-water them. Yes, autoflowers need water to grow, but it’s critical to supply it only when the plant needs it. It’s obvious that the timing is important even when the plants need water.

A way to check if the soil is dry is to use your index finger and stick it in the soil, if it comes out moist then the soil is still humid, although by doing this you won’t be able to know if the bottom is still wet so in order to get the timing right, lift the pots and check the weight. A dry pot will be easy to lift whereas container with lots of water will be heavy. The trick is to not let the soil go too dry or too wet, so water the plants only when the pot isn’t too heavy or light.

8. Overfeeding and underfeeding

Nutrients play a big role in growing autoflowering cannabis strains. Autoflowers are compact, so they don’t need loads of nutes in order to survive. In fact, autoflowers grow best when light fertilizers are used. It’s also important to feed the right nutrients at the right time.

Macro and micronutrients

For example, cannabis needs more nitrogen in the vegetative stage. In the pre-flowering stage, nutrients with more phosphorous are preferred, and in the flowering stage needs a lot more potassium than nitrogen or phosphorous. If you’re wondering what the term “N-P-K” printed on fertilizer bags means, it’s nothing but Nitrogen-Phosphorous-Potassium. The plants also need other micronutrients along with calcium and magnesium, so it’s extremely important to get the dosage right.

Don’t make the rookie mistake of using Miracle Grow or any other fertilizer meant to grow vegetables. Autoflowers will grow well even if you do that, but since they have special needs, you might as well stick to nutrients that supply everything. From humic to fulvic acid to enzymes, you can do a lot to make the plants perform to the best of their potential.

Talking about nutrients, some growers try to make their own nutes. While it’s completely okay to do so, you should avoid doing it if you’ve never done that before. Nutrients are expensive and it’s tempting to make your own, but try to attempt that after you’ve gained some experience. Why? Because cannabis plants require a good blend containing all micro and macronutrients in exact concentrations to thrive. It’s not as simple as diluting a random fertilizer and feeding the plants. You not only risk burning the plants, but the yields will suffer drastically since the plants have no time to recover.

PH levels

So, if it’s your first time, stick to commercial nutrients. And, the topic on nutrients is incomplete if you don’t talk about pH. Depending on the medium 2 you choose to grow, the pH must be regulated accordingly. Cannabis plants love acidic soil, so the pH must be maintained between 5.5 to 7 in both soil and hydroponic setups. If the pH drops below 6, the roots will not be able to intake vital nutrients such as magnesium, calcium, and phosphorous. Similarly, if the pH is too alkaline and goes above 7.5, the roots cannot take up micronutrients like copper, manganese, boron, etc. It’s very important to regulate the pH at all times to prevent nutrient deficiencies.

Here’s a quick table to help you understand pH better:

Nutrient Ideal PH Level for Absorption
Nitrogen 6.0-8.0
Phosphorus 6.5-7.5
Potassium 6-8
Calcium 6.5-8.5
Magnesium 6-8.5

Sometimes, it just so happens that the plant refuses to respond even if you’ve done everything. In such cases, flush the plants with lots of water (at least double or triple the size of the container) to reduce any nutrient or salt buildup so that the plants can breathe again. Flushing is typically done at the end, but it doesn’t hurt the plant even if you do it in between because it reduces buildups to a good extent.

Some growers also flush during the pre-flowering stage, when the plants are transitioning from the vegetative into the flowering stage so they can start feeding from zero, as said above, this won’t hurt your plants but should be done properly.

9. Harvest at the right time

You’ve come all this way, and the end is almost near, so don’t screw this up now! Now you’re probably asking “how to tell if my autoflower is ready for harvest?” Well, after you’ve put in all the hard work, wait for the right time. Growers use microscopes to check the trichomes that usually indicate the right time, but you can harvest when at least 50 to 70 percent of the pistils are amber in color. While judging pistil colors works well for many growers, you can use trichome color as an accurate estimation for harvest time, too.

Have you ever noticed that white frosty layer on the surface of cannabis buds? They might not look like much to the naked eye, but these are tiny mushroom-shaped glands known as trichomes that produce all of the cannabinoids and terpenes that underpin the effects, aroma, and flavor of different strains. Low-cost forms of magnification, such as jewelers’ loupes, offer an up-close and personal view of these little phytochemical factories.

By assessing their color, you can get a good understanding of the maturity of your buds. Clear trichomes indicate that flowers are still too young and lack adequate levels of cannabinoids and terpenes. Aim to harvest when at least 50% of the trichomes you inspect are milky and opaque. If you wait too long, these glands will start to display an amber color, signifying the partial degradation of THC into CBN—a byproduct associated with a more physical and stoning effect.

If you wait too much, the buds tend to produce a couch-lock effect leaning more towards the Indica side while buds harvested too early generate unpleasant psychoactive effects. Also, the main colas ripen faster than the lower portions of the plant. Often referred to as popcorn buds, the lower portions stay small. However, harvesting the main colas and leaving the popcorn buds on the plant for a week more will increase yields dramatically. Be patient, and let Mother Nature do the rest for you! If you avoid these common mistakes when growing autoflowering cannabis, you’ll soon be rewarded with potent resinous buds that will last a long time if stored properly.

10. Frequently Asked Questions About Autoflowers

What’s the average autoflower size and how tall can they get?

Most autoflowers reach a height of around 50-100cm but a plant’s size depends on the genetics and growing conditions. Also, all strains are different so you will find Sativa and Indica-leaning autos; Most Indica hybrid autoflowers will stay around the 80-120cm mark but Sativa-dominant autoflowers can reach up to 175cm tall.

Can I grow my auto on my window sill?

Yes, you can, although it’s not recommended if you want to get the best results possible but if this is the only way you have, make sure your plant gets at least 4-6 hours of direct sunlight a day and that you’re using at least a 10-liter pot.

Do autoflowers grow normal or smaller because of the Ruderalis genes?

The size of an autoflower can be influenced by several factors, genetics being the main one. More modern autoflower breeders breed their genetics to contain as little as Ruderalis genetics as possible, focusing on the more appealing characteristics such as size, structure, potency, and yields.

See also  Sativa Marijuana Seeds

But when compared to a photoperiod plant, an autoflower has a limited lifespan so things such as stress, damage, or a bad environment can ultimately affect your auto’s height, so it’s ideal to provide optimum grow conditions to get the best results possible.

When is the best time to plant autoflowers outdoors?

This solely depends on your climate, you need to remember that autos prefer dry sunny days so if you’re planning to have just one grow cycle, you can start them 1-2 weeks into Summer, and if you’re planning to have 2 harvests, start the next one right after finishing the first one.

What yield can I expect per autoflowering plant?

The yields depend on genetics, environment, stress, growers skills, and etc.. But in general, you can expect between 50-110 grams per plant.

How long will it take for my auto to start flowering?

In general, autoflowers stay for 4 weeks in the vegetative stage, so about 4 weeks. Then your auto will start developing flowers for 3 weeks, and fattening up the buds for the last 3 weeks.

Most autoflowers take around 10 weeks from seed to harvest but may take longer depending on the phenotype and growing conditions.

This may vary according to the genetics and growing environment, have in mind that it’s just to give you an idea of what to expect, some autoflowers may take less and others take longer.

Yes, you can, although it’s not recommended because it can affect the yields. To prevent shocking your autoflowers and consequently affecting yields, it’s recommended to transplant 7-12 days after germination and if possible, use rooting cubes to prevent damaging the roots.

Can you grow autoflowering cannabis in a greenhouse?

Of course you can, you can grow autoflowers in a greenhouse all year round as long as you keep the inside temperature to a minimum of 15°C and there’s enough ventilation, airflow, and sunlight.

11. In conclusion

Autoflowers (aka self flowering seeds) are suited for beginner growers but it’s crucial you know the basics if you want to have a successful harvest the first time you grow cannabis, although you can learn as you go, it can be disappointing if you waste time and money, and end up with nothing to smoke.

Now that you know the basics and what to avoid, you’re all set up to start your first autoflower indoor grow.

If you’ve never grown cannabis before and are planning on growing our autos, feel free to ask us anything in the comment section below!

Growing Autoflowering Cannabis Seeds [Guide]

Do you desperately want a cannabis garden but don’t have the time to dedicate? If so, autoflowering seeds are potentially the answer to your prayers! These unique strains flower automatically rather than waiting for a specific lighting cycle. Generally speaking, your plants will begin flowering after a vegetative stage of just 2-4 weeks.

The autoflowering phenomenon has only gained traction in recent years. Strains of this nature include Cannabis ruderalis genetics, a species of marijuana first described by D. E. Janischewsky, a Russian botanist, in 1924. When you cross ruderalis genetics with indica or sativa varieties, you get plants that grow and flower without intervention.

This guide outlines everything you need to know about autoflowering cannabis seeds. This includes tips on growing them, pros and cons, and five of the best strains on the market.

EDITOR’S CHOICE – Homegrown CannabisCo

Homegrown CannabisCo are the masters when it comes to seeds. Offering a massive variety of cannabis seeds that are well categorized, not only does this company create a resource for superb quality options including feminized seeds, it also provides extensive growing information for those looking for some support along their journey.

Autoflowering Cannabis: What Is It?

With regular ‘photoperiod’ marijuana plants, an outdoor grower must rely on the seasons. Meanwhile, an indoor grower must change their lighting cycle. For instance, to force your plants to enter the flowering stage, you need to create a 12/12 light cycle. The change in light duration lets the plants think winter is coming, and it starts flowering accordingly.

As the name suggests, autoflowering marijuana strains flower automatically rather than waiting for a specific light cycle. These plants produce buds when they are ready, which means there is no reason to mess with your lighting.

While the yield and potency of photoperiod weed remain higher, the gap is closing. As breeding techniques become more advanced, it is now possible to produce autoflowering marijuana strains with significantly increased levels of THC. They also produce far bigger yields.

For example, strains such as Amnesia Haze Automatic produce up to 14 ounces of bud per square meter planted. Royal Gorilla Automatic contains up to 20% THC. With fewer disadvantages than ever before, it is no wonder that ‘auto’ plants are becoming increasingly popular.

It takes as little as eight weeks from seed to harvest. Therefore, you can enjoy several batches of autoflowering plants each year. While they were traditionally small and squat, even that aspect is changing. Auto Sweet Soma seeds can produce plants that grow as high as 155cm, for example! You can still get small plants such as Royal Jack Automatic that seldom grows taller than 80cm if you wish.

Your Exclusive Autoflower Grow Guide

When using auto-flowering cannabis seeds, make sure your plants have as much support as possible throughout the process. Ideally, you will begin your autoflower grow indoors with artificial lights you can control. This tactic reduces the likelihood of error and increases the possibility of a strong start.

Autoflowering Marijuana Seeds

Proper germination is pivotal to the healthy development of your autoflower marijuana plants. You can go down the traditional route of using soil or try a container with a growing medium. The paper towel method is probably the easiest way to germinate your autoflower seeds.

After your seeds begin to sprout, the next step involves transplanting them. Ideally, you will only do so once because autoflowering seeds are susceptible to transplanting shock.

Transplanting auto-flowering seeds is more complicated than their photoperiod brethren. However, it is a myth to suggest it is impossible to do so more than once successfully. You can re-pot an autoflower if you are extremely careful. If you need to transplant your autos to a larger pot, make sure they end up in the same soilless growing medium or soil as before. Also, complete the process before their dark period when their growing medium is dry.

Avoid Early Cuttings with Autoflowering Marijuana Strains

We don’t recommend taking cuttings during the early growth stages of auto-flowering weed. The plant will autoflower at a specific point. Therefore, the age of the cutting will merge with the age of the parent plant. This means they will flower at the same time. If you grow a cutting of an auto-flowering plant, the final version is significantly smaller than the parent when it reaches the flowering stage.

Training Your Autoflowering Weed

It is best to complete the training process during the vegetative stage. It is essential to act fast because this stage is only a couple of weeks long in autos. We recommend using a low-stress training (LST) method, such as pulling the plants down sideways to help boost upwards growth. When they start flowering, prune them for up to a week into the flowering stage and do NOT top them.

You shouldn’t prune an auto-flowering plant in the same way as its traditional counterpart. First and foremost, all pruning should begin early in the life cycle, or else you risk hindering its growth.

Best Lighting & Climate for Autoflowering Marijuana Plants

With autos, you are allowing plants to flower when they should be in the vegetative growth stage. This means you can autoflower rather late in the season (September) or very early (March). Please note that the plants can only grow with adequate warmth. Exposure to excessive levels of moisture could result in rot.

We recommend growing autoflowering plants indoors if possible. Ideally, your plants will grow in a room with a temperature of 68-77 degrees Fahrenheit with 50-70% humidity.

Plants with ruderalis genetics are tougher than those without but still require light to produce food for themselves. Many autoflower growers still believe that providing light 24/7 is best for their plants. This process enables them to absorb CO2 during the photosynthesis process continually. Ruderalis plants grew for a long time in the northern hemisphere. In that situation, they were exposed to 24 hours of light a day on occasion.

24-hour lighting will result in fast initial growth. However, it usually slows down after a few weeks because the plant is without adequate rest. The 18/6 schedule offers a delicate balance of plenty of light with ample rest. You also save money on your energy bill! For instance, in one month, using an 18/6 schedule against a 24/0 schedule saves you 180 hours’ worth of light!

The 20/4 schedule is potentially a happy medium. However, the 18/6 option is the most sensible because your plants need a few hours of darkness each day for specific metabolic processes. Whatever additional yield you attain from constant lighting is more than offset by the increase in your lighting bill!

Feeding Your Autoflowering Plants

The latest generation of auto-flowering plants are more prominent than their predecessors and produce a bigger yield. As a result, they need more nutrients than their first-gen counterparts. Even so, on average, an auto-flowering plant still requires fewer nutrients than photoperiod plants. Make sure you water them for the first two weeks as they begin to grow.

There is no need to add nutrients during this period. By week three, you can begin adding nutrients and increase the feeding rate weekly. Remember, the vegetative stage is short, so you need less nitrogen. Light feeding is ideal unless you notice a nutrient deficiency. You’ll need to alter the nutrients once the plant hits the flowering stage.

Harvesting Autoflowering Marijuana Plants

The best method of harvesting auto-flowering plants is to take the colas and allow the lower buds to become denser before harvest. As these plants grow so quickly, they usually don’t have time to develop a canopy. As a result, you need to keep the buds that are lower down on the plant. These days, it isn’t unusual to find automatics that produce up to 22 ounces per square meter.

Since you can grow 4-5 batches a year, it adds up to a lot of buds! We also recommend preparing the next crop as you are harvesting. Pop seeds before you collect your existing plants to ensure your garden is continually producing. The fact is, you don’t need to worry about changing lighting because your plants automatically flower!

Curing & Storing Autoflower Weed Strains

Many of the same drying, curing, and storing rules apply with auto-flowering cannabis plants. You can dry your buds by hanging them upside down for a few days. Store them in airtight containers but ensure there is a bit of space in each jar. Initially, open the jars once a day for a few minutes.

After a week, opening the jars once every 2-3 days will suffice. Your bud is ready for use once there is only a small amount of moisture left. Transport your weed to a sealed container and use it within a few months.

Where to Find Autoflowering Cannabis Seeds

It is relatively easy to buy autoflowering seeds online. There is an increasing number of reputable websites that sell them. Alternatively, you can find them in a local dispensary, but purchasing the best autoflower seeds is a challenge at first.

When making the decision, ask yourself the following questions:

  • What level of THCand CBD are you looking for?
  • Do you have a preferred taste and aroma?
  • What kind of growing conditions will you plant the seeds in?

It is also crucial to purchase feminized seeds. Otherwise, around half of your crop will consist of male plants, which could ruin everything. If you have a small grow room, purchase an indica strain because they usually grow smaller. If you have a larger space, buy sativa autoflower strains. They are typically bigger and provide a higher yield.

Now, let’s take a look at five autoflowering strains worth considering for your cannabis garden.

Five Awesome Autoflowering Strains

1 – Amnesia Haze Auto

Amnesia Haze Automatic combines 30% ruderalis, 20% indica, and 50% sativa genetics. It is a nice option if you want a sativa-dominant strain that doesn’t take forever to flower. By the standards of autoflowering strains, it is a large plant that can reach 120cm in height.

What interests growers is the fact that it can grow from seed to harvest in just ten weeks! In the past, autoflowering strains were fairly weak, but Amnesia Haze Automatic contains up to 18% THC. Its yield is up to 14 ounces per square meter planted, which isn’t a million miles behind many photoperiod strains.

Apparently, it is a crossbreed between The Bomb, Ultra Haze, Champagne Haze, and a few other popular strains. Users claim that it offers a nice sweet and spicy taste. Also, it offers an uplifting cerebral high that can be used to manage the symptoms of depression and perhaps boost your appetite.

It’s easier than you think!…

2 – White Widow Auto

This autoflowering option is a new cross of White Widow, which is widely regarded as one of the finest strains around. It looks just like its photoperiod counterpart with wide dark green leaves and glistening trichomes. While it has many traits that made its traditional version so popular, the auto version has a total crop time of under 85 days!

The buds provide users with an indica effect, and its woody, intense aroma and taste combine beautifully with a hint of lemon. White Widow Automatic has been bred for several years to ensure genetic stability. The plant can grow to 100cm, although it is more likely to hit 50cm. The overall yield is up to 9 ounces per square meter, although some growers claim they have attained a yield of 16 ounces.

White Widow Automatic is potent, with a THC content of 15-20%, and is often used to help with pain, insomnia, stress, and nausea. For best results, grow it under 24/7 light as much as you can. It is 20% ruderalis, 40% indica, and 40% sativa.

3 – Quick One Auto

Quick One Auto’s creators didn’t take too long to decide the name of this autoflowering strain! It was one of the first members of the Royal Queen Seeds collection and is a cross of Northern Lights, Ruderalis, and The Williams Wonder. It contains 30% ruderalis, 60% indica, and 10% sativa genetics.

When Quick One was released, it was among the fastest-growing strains ever. While there are even quicker growing autos these days, Quick One is still lightning with a total grow time of around 8-9 weeks. However, you may want to give it an extra week for a more mature final plant.

Its yield can reach a decent 12 ounces per meter square indoors but is just 6-7 ounces outdoors. It offers a fresh, herbal aroma with a pleasant taste that has citrus notes. Quick One won’t grow much taller than 50cm, making it ideal if you’re stuck for space. Its THC content of 13% is low by today’s standards, but it is still a good smoke for novices.

4 – Easy Bud Auto

Easy Bud Auto isn’t a household name, which is a great shame. As you can probably guess, it is among the easiest autoflowering strains to grow. Therefore, beginners should be casting their eyes toward it. It is a durable plant, and there are few growing conditions where it won’t provide at least a few grams of high-quality buds.

It was created by breeding an indica-dominant hybrid (possibly White Indica) with an unknown ruderalis plant. It has 30% ruderalis, 55% indica, and 15% sativa genetics. Royal Queen Seeds created it, and its total growing time is 8-9 weeks, whether you grow it indoors or outdoors.

Its height ranges from 40-70cm and works best when using organic nutrients and soil as your growing medium. It doesn’t require many nutrients and thrives under most light sources. It can provide up to four ounces of bud in optimal growing conditions. With a THC content of 12%, it won’t provide a devastatingly potent high, but it is an easygoing smoke that offers decent body intoxication.

Easy by name, easy by nature!…

5 – Royal Jack Auto

This autoflowering strain is a cross of Jack Herer and a Ruderalis plant. It is named after the legendary activist who wrote The Emperor Wears No Clothes. The strain’s genetic makeup is 30% Ruderalis, 30% Indica, and 40% Sativa. With a total growing time of around nine weeks, you could benefit from several harvests per year if you are motivated.

Royal Jack Auto shouldn’t grow any taller than 80cm, and its yield is around 4-5 ounces per plant. Overall, with a THC content of around 16%, this autoflowering option provides you with a relatively potent, Sativa-dominant high that could boost your level of creativity. Users are also rewarded with a fresh and peppery scent from what is a very satisfying smoke.

The Pros and Cons of Growing Autoflowering Cannabis Seeds

By now, it probably seems like a no-brainer to grow auto-flowering marijuana any chance you get. However, some disadvantages come along with the host of benefits that autoflower strains provide. Here is a brief list of the pros and cons of autoflower marijuana vs. regular marijuana.

Pros of Autoflower Marijuana Strains

Greater Variety

The shorter growing season means you have a higher level of autoflowering varieties. Imagine having the opportunity to grow five different strains in a single season! Multiple harvests are especially useful if you enjoy the growing process and are keen to sample as many marijuana types as possible.

Uncomplicated Setup

If you grow marijuana the traditional way, you’ll typically require a specific grow room and a separate flowering room. With autoflowering weed, you only need a single space. If you have several rooms, you can time your growing to guarantee a harvest every few weeks.

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If you grow in a typical manner, you have to ensure your grow room has light-proof sealing. It is a disaster if this gets breached. In contrast, a light leakage has no discernible impact on the flowering stage of your autoflower marijuana.

Durability

As autos contain ruderalis genes, they are more robust than other marijuana plants. Remember, they are based on plants that could grow in harsh Russian weather conditions. A typical cannabis plant will have its flowering and growth phases interrupted if there is a power outage. This fact could play havoc with their growth cycle. You don’t have this problem with an autoflowering plant.

Fast Blooming

There are auto strains with a flowering time of just five weeks! Add in a 2-4-week vegetative stage, and you could theoretically grow a strain from seed to harvest in only seven weeks. Bubble Kush Auto, for example, is ready to collect 7-8 weeks after sprouting. Therefore, you can enjoy multiple harvests each year.

Stealth Growing

While varieties of autoflowering strains are getting bigger, you can still find versions that grow to about 40-50cm. Consequently, you can plant them in a closet, tent, or even on a balcony! You could also hide such a plant in a remote field if the grass is tall enough! Also, autos don’t require a ‘support system’ to hold up long branches that could bend or break as the buds get larger.

No Messing About with Lighting

There is no need to change your light cycle to a 12-12 schedule. Therefore, you can keep a consistent lighting schedule all year round if you wish. With this possibility in mind, you can grow auto-flowering plants at different stages in the same room!

Auto-Flowering Cannabis Strains Guide

Pictures of Auto-Flowering Plants – What do they look like at harvest?

Introduction to Auto-Flowering Cannabis Strains

Auto-flowering cannabis strains are the descendants of a wild strain of hemp first identified as “Ruderalis” in Russia during the early 1940s.

These are different from most strains of cannabis, which are known as “photoperiod” strains. Photoperiod plants don’t start flowering (making buds) until they get specific signals from the sun that winter is coming, and so need special light schedules to be induced into making buds.

Conversely, Ruderalis plants don’t need any type of signal. Instead, Ruderalis plants start flowering when they reach 3-4 weeks of age no matter what’s going on with the sun or light schedules, and their buds are ready to harvest only a few months from seed.

Auto-flowering strains start automatically making buds (flowering) when they’re 3-4 weeks old. On average, plants are ready to harvest ~3 months from germination. Sometimes even less!

By living such a short life, Ruderalis cannabis plants were able to survive in Russia with short summers and extremely long winters. Unfortunately, just like other types of wild hemp, wild Ruderalis buds contain very low levels of THC. Wild Ruderalis plants were also very small and produced tiny amounts of bud, which might make them seem useless to cannabis growers.

Fortunately, a forward-thinking breeder realized that the auto-flowering capability and short growing period of Ruderalis strains might be useful to hobbyist cannabis growers, even though the wild Ruderalis plant wasn’t going to work all by itself. This unknown breeder started intermingling Ruderalis plants with famous strains of photoperiod (regular) cannabis in order to increase bud potency while carefully breeding plants to retain the auto-flowering capability.

These days auto-flowering strains, originally known as “Lowryders,” are found at most seed banks alongside photoperiod strains. Although the wild Ruderalis ancestors contained almost no THC and were tiny, most modern auto-flowering strains produce buds that are comparable in potency to other strains of cannabis due to many generations of diligent breeding.

The best modern auto-flowering strains have been bred to produce bigger and denser buds than the original Ruderalis plants. Buds have also been bred to be as potent as photoperiod strains.

Genetics Make a Huge Difference with Auto-Flowering Strains

The original Ruderalis ancestors stayed small and weren’t potent, as were the original auto-flowering strains, so the breeding history of an auto-flowering strain is crucially important.

As breeders have been able to make more specialized strains, they’ve tailored the effects and growth patterns for different needs and purposes. As a result, each strain grows differently, just like with photoperiod strains. That’s why it’s always a good idea to read the breeder’s description of a strain when buying seeds. Some auto-flowering strains get particularly tall, while others tend to stay short. You’ll get the best results if you match your strains to both your setup and each other!

These two auto-flowering plants are the same age and were grown in the same setup! Genetics makes a huge difference to your final results, so it’s important to pick the right auto-flowering strain for your goals! The small plant is White Widow Auto & the huge plant is Onyx Auto.

The following two autoflowering plants are also the same age (70 days from germination) and grown in the same environment. One plant stopped growing and started making buds after just a few weeks, resulting in a tiny plant with one bud that is just about ready to harvest already. The other plant kept growing for almost 2 months before budding in earnest, which means the plant is far bigger but the buds still need a lot more time before they’ll be ready to harvest.

These two auto-flowering plants are also the same age and and grown in the same environment! The small plant is Auto Chemdawg & the huge plant is Super Lemon Haze Auto.

I hope these two examples help show why it’s important to get the right auto-flowering strain for your goals and setup! If you want a small, fast plant you won’t be happy with your results if you purchase a tall strain, or vice versa.

Because of their short vegetative stage and lifespan, in general most auto-flowering cannabis strains tend to stay relatively short, and are ready for harvest around 3 months from germination.

The really exciting part is the auto-flowering world is evolving quickly. More and more breeders continue making new auto strains. We’re starting to see better and better yields, more nuanced potency, and a lot more variation when it comes to harvest times, plant size and growth rates.

Auto-Flowering vs. Traditional Cannabis Strains

Unlike traditional (referred to as photoperiod) strains, autos don’t need any special kind of light schedule to “tell” the plant to start budding. With a photoperiod strain, a cannabis plant needs 12+ hours of darkness a day to initiate flowering.

When growing photoperiod cannabis plants outside, flowering naturally begins when the days get shorter. For outdoor growers, this means that plants must be planted in the spring, and they grower must choose strains that will finish in time before winter.

Indoor growers cultivating photoperiod strains can initiate flowering at will by giving plants longer dark periods (usually by putting their grow lights on a timer). For indoor growers, this means the grower needs to make a light-proof grow space to allow for 12 hours of uninterrupted darkness each day while the plants are flowering.

For an auto-flowering cannabis plant, a grower doesn’t have to worry about light schedules. Each auto-flowering plant starts blooming after a few weeks no matter what light schedule is provided. For outdoor auto growers, there’s no need to match up the strain with your local time zone or plant at the perfect time – simply plant autos when you know you have at least 2-3 months of warm, sunny weather.

When growing auto-flowering plants outdoors, you don’t need to worry about light schedules. You just need to ensure your plant will have 3 months of warm weather (above 60°F) and your climate is likely suitable to grow auto-flowering plants. These auto-flowering plants were ready to harvest before summer was even over:

For all growers in a hurry to harvest, an auto-flowering plant will almost certainly be ready to harvest more quickly than any other type of cannabis strain.

How long until harvest?

Auto-Flowering

Generally, autos are ready to harvest sooner than photoperiod plants. Most autos are ready to harvest 2-3 months after being sprouted from seed.

For the first few weeks, autos (auto-flowering plants) only make vegetative growth – stems and leaves. After their short “vegetative stage” ends, the plant will start making buds and continue to grow taller even while their buds are forming.

It’s only until a few weeks before harvest that most auto-flowering plants stop growing “up and out.” At this point, auto-flowering plants put all their energy into fattening buds, and buds can gain substantial weight during the last few weeks.

When purchasing auto seeds, good breeders will be able to tell you how long the strain will take until harvest. It’s important to note that most strain breeders will tend to provide the shortest time frame they can, and many autos will produce better yields and higher potency if left for a week or two (sometimes even three) longer than recommended.

How do I know when to harvest my plants? – Basically in addition to the visual appearance of buds, you can look at your buds under a magnifier to know exactly when to harvest for top THC potency.

Photoperiod

Photoperiod strains usually take longer to harvest than autos. In general, photoperiod strains are ready to harvest 3-4+ months after being sprouted from seed, though the final time depends heavily on your grow style and which strain you choose. Even photoperiod plants flowered from seed tend to take longer than an auto-flowering plant to be ready to harvest, and the yields are much lower. Photoperiod plants do best when given some time in the vegetative stage before they start flowering, and aren’t as well suited to quick harvests.

Auto-Flowering vs Photoperiod: Which Yields More?

Auto-Flowering Strains

Autos generally yield up to about 4 ounces of bud per plant when taken care of throughout their life, but the amount of bud produced has a lot to do with the grow setup.

Many growers end up yielding 1-2 ounces per auto or even less, especially if starting with poor genetics or when using a sub-par lighting setup. Like all cannabis plants, autos need a lot of light to produce good yields!

In some cases, growers with a lot of experience, great starting genetics and perfect conditions can yield up to 6 ounces per auto-flowering plant or more.

For example this indoor Dutch Passion AutoMazar plant yielded above 900g (more than 30 ounces of dried bud) from just one plant under about 1000W worth of light. Normal yield for this strain is about 100g, so this – admittedly extreme example – demonstrates what a great setup and grow experience can do for your yields!

When considering yields, it’s important to remember that one of the advantages of growing auto-flowering cannabis strains is most growers can produce several harvests a year (since the lifespan of each auto plant is very short).

Photoperiod Strains

Photoperiod strains can have a lot more variation in yields than auto-flowering plants. This is due to the fact that photoperiod growers have a lot more control over the size and shape of the plant, which in turn has a huge effect on yields.

Outdoors, your yields depend a lot on your climate. Warm and sunny weather with many hours of light a day will produce plants with bigger yields.

Indoors, generally your setup is the biggest determining factor of your yields.

Which is more potent? What about smell and taste?

While there are currently fewer auto-flowering strains to choose from, the potency for autos and photoperiod cannabis plants is comparable. Auto-flowering buds are not significantly less potent.

However, one major difference is that many auto-flowering strains tend to have higher amounts of CBD in their buds than photoperiod strains (because Ruderalis plants are high-CBD). CBD is a cannabinoid that is known for having medical properties as well as reducing anxiety.

But in general, a modern “Blue Cheese” auto has been bred to have similar bud characteristics as a “Blue Cheese” photoperiod plant.

Things have come a long way since the original low-potency “Lowryder” auto plants!

Smell, Taste and Visual Appeal – When it comes to smell & taste, the same rules apply. While there are fewer auto-flowering strains to choose from (though the list is growing each day), the smell and taste of each strain is similar to their photoperiod counterparts.

The one visual difference I’ve seen is that auto-flowering buds tend to be a little bit leafier (grow more leaves among the buds) than photoperiod strains, which means they may need a little extra care during trimming to get rid of all the leaves.

It’s important to note that some photoperiod strains grow in the same way, and I don’t believe that extra leaves during the budding process is necessarily a bad thing. If anything, the extra leaves seem to power the growth of buds, causing them to swell up more in a smaller amount of time and less light that photoperiod strains.

Are auto-flowering strains better for medical marijuana?

An important characteristic for medical marijuana patients is that auto-flowering buds tend to contain higher levels of CBD than photoperiod strains.

CBD is a cannabinoid that is known for having medical and anti-anxiety properties. Most photoperiod strains these days are high THC, low CBD, and it can be hard to find high-CBD photoperiod strains. Learn more about THC vs CBD.

This makes auto-flowering buds an attractive choice for some medical marijuana patients who are looking for higher CBD cannabis strains. There are also auto-flowering strains that are bred principally to be high in CBD. It’s difficult for many growers get clones of one of the famous high-CBD photoperiod strains, and auto-flowering strains can make it easier for some patients to get access to CBD.

When I grew auto-flowering strains, the buds felt more medicinal (as opposed to recreational) than the majority of strains I’ve grown. Even in higher doses, the effects weren’t as “racing” as some of the really high-THC, low CBD strains. The buds all made me feel very pleasant and helped melt away stress, without being overwhelming. I think some people might actually prefer the effects of auto-flowering buds, even if they’re not patients, and I believe autos may be a great choice for some medical marijuana patients.

How big will each plant get?

Auto-Flowering

Autos tend to stay short naturally. In fact, in most conditions it is difficult to produce very large auto-flowering plants because they have such a short lifespan. They only grow bigger for about 1-2 months. The rest of their lives are spent fattening buds.

On average, autos grow 1-4 feet tall by harvest time; generally, auto-flowering plants will stay under 4 feet in height. The final height of each auto depends a lot on the strain you choose and whether you provide enough light. You can also use some non-stressful plant training methods like bending tall branches over (low stress training) to help prevent stretchy autos from getting too tall.

Photoperiod

Do autos need a special light schedule to start making buds?

Do auto strains needs a special light schedule? In a way, yes!

Autos Should Get 18-24 Hours of Light a Day for the Best Yields

Why are light schedules important anyway?

Auto-Flowering Strains

Auto-flowering strains will automatically start flowering (making buds) after around 3-4 weeks, a time period dependent on the specific strain. You cannot change this; autos will automatically start flowering due to an internal countdown. After they start making buds, they will stay in the flowering stage until harvest time. Harvest is usually 2-3 months from seed and depends almost completely on the strain.

Therefore, with auto-flowering plants, there is no special light schedule “needed.” The grower does not need periods of darkness to initiate the flowering stage and get plants to bud properly. You can grow an auto-flowering plant from seed to harvest even if you were giving just 12 hours or even 8 hours of light a day and it will still make buds and be ready to harvest. However, to get the best yields you want to take advantage of the fact that you can give autos a lot of light each day since more light each day = more growth = bigger yields.

One advantage of this internal timeclock is that auto-flowering strains can be grown outdoor in a city environment where the ambient light at night may be too bright for photoperiod plants to be able to make buds. Autos don’t care if they’re exposed to light at night. This can also be used in warm climates to get plants to grow outside the normal growing season. For example, as long as it’s warm enough you could start a plant in April outside and it will be ready to harvest by July, which is much sooner than you’ll be able to harvest any photoperiod plant (all of which are ready to harvest in mid to late Fall).

Note: The auto-flowering internal clock is why it’s recommended to never take clones from auto-flowering strains – clones will be on the same time clock as their mother. Learn more about why it’s not recommended to take clones from auto-flowering plants.

Photoperiod Strains

Photoperiod strains need to be on a 12-12 light schedule to initiate flowering. When growing outdoors, photoperiod plants naturally start making buds as winter approaches and days grow short. However, most indoor growers put their grow lights on a timer to initiate and maintain a 12-12 light schedule during the flowering stage until harvest. This need for uninterrupted darkness is why it’s important to create a light-proof growing environment when growing photoperiod plants indoors.

The term “12-12” stands for 12 hours of light and 12 hours of dark each day, and it “tells” photoperiod plants to enter the flowering stage and make buds. During their daily dark period, photoperiod plants need to receive complete darkness without interruption. This light schedule initiates flowering, and must be maintained throughout the entire flowering stage until harvest.

If photoperiod plants receive too much light each day, or are exposed to light during their dark period, they will either produce hermies (bad) or revert back to the vegetative stage (stop making buds). If you will be unable to provide complete darkness to your plants during their night period, it’s recommended that you choose to get an auto-flowering strain, which isn’t affected by light at night.

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Are Autos Easier to Grow?

Auto-Flowering Strains

In some ways, auto-flowering strains are more simple to grow than photoperiod strains, but there are some additional considerations. For example autos do poorly if the grower runs into major problems during the beginning of the grow because an auto jumps straight into the flowering stage even it’s not doing so hot.

The auto-flowering White Widow plant pictured to the right is sick and stunted. Because of the auto-flowering nature of this strain, the grower was unable to nurture the plant back to health before the flowering stage began. In this picture, the plant is 2.5 months old (started from seed like all autoflowering plants), and the buds are nearing their harvest window even though they’re still small and airy. As a result, the total yields from this plant will be very low (just a few grams). This can be discouraging as the grower must start over with a new seed in order to try for a bigger harvest.

Autoflowering strains begin making buds and continue on their short internal time-clock regardless of their health. If you make a lot of mistakes, you will not have time to remedy the plant and you may end up with a small stunted plant.

On the flip side, if your grow doesn’t go as well as planned, at least it will be harvest time in just 2-3 months, you’ll learn a lot, and you’ll have the opportunity to try again. That being said, autos are essentially very simple and a first-time grower can easily get a great harvest on their very first grow. Plus, auto-flowering plants (and cannabis plants in general) are hardy! As long as you give them basic care, they will reward you!

Photoperiod Strains

Photoperiod plants are able to recover from major growing problems in the vegetative stage when grown indoors because the grower can give the plants as much time as needed to recover before switching plants over to the flowering stage.

In some instances, photoperiod strains of cannabis may be easier to grow indoors if you are a new grower because you can give yourself as much time as to fix problems in the vegetative stage. During this stage, cannabis plants are hardy and can easily bounce back from problems. Even if you make a lot of mistakes, you can still get big yields because unlike with autoflowering strains you are in control of when the flowering stage begins.

Once the flowering cycle is initiated, your plants are more “set” as far as their overall health and structure. Once a cannabis plant starts budding, there is basically a countdown until buds are ready to harvest just like autos (this amount of time is mostly based on the strain). Though the plant may have an initial last “stretch” of vegetative growth when the light cycle is first changed over, as the plant approaches harvest towards the end of the flowering stage, almost all growth halts except for the development of bigger buds.

Are autos better for growing outdoors?

Auto-Flowering Strains

Auto plants are suitable for growing outdoors in almost any climate that has at least 2-3 months of warm, sunny weather every year.

Requirements for growing auto-flowering strains outdoors are pretty simple…

  • Lots of direct light each day. Auto plants should receive 5+ hours of direct light each day. More is better. In general, more light = bigger yields.
  • 2-3 months of warm, sunny weather. When planting seeds, you should ensure that the weather will stay warm and sunny for at least 2-3 months from when the seed is first planted.

Photoperiod Strains

When growing photoperiod plants outdoors, it’s important to make sure you plant your seeds at the right time and choose a strain that is suitable for your climate.

When growing photoperiod strains outdoors…

  • Plant in Spring. Photoperiod plants need to be planted outdoors in late Spring, after days have grown long enough to support a vegetative stage. It’s safe to put plants outside in late April for the Northern Hemisphere, and late October for the Southern Hemisphere.
  • You can start plants indoors. Photoperiod plants can be started indoors if it’s too cold to put plants outside during your spring, or if you would like to grow bigger plants than would normally be possible in your local environment. Just make sure indoor plants get at least 14+ hours of light each day.
  • Choose the right photoperiod strain for your climate. A strain suited to your environment needs to be chosen with your climate in mind to ensure that buds are ready to harvest before winter. What this means is you need to ensure the strain’s “flowering stage” is short enough for your climate. The length of a photoperiod strains flowering stage is primarily determined by genetics; outdoor photoperiod plants will start flowering when days grow short as winter approaches. It’s important that you choose a strain with a flowering period short enough to allow buds to mature before it gets too cold or rainy. Cannabis plants cannot survive freezing temps or torrential rain, so you need to choose a strain that will be ready to harvest before winter sets in. Generally, “Indica” strains have a shorter flowering stage and are more suited to colder climates with short summers. “Sativa” strains are more likely to have longer flowering stages, and are better suited to warm climates with long, sunny summers.
  • Make sure photoperiod cannabis plants are not exposed to light during their night period. When growing photoperiod plants outdoors, being exposed to light at night can prevent them from flowering, or cause them to have other problems. While moonlight or starlight won’t bother your plants, it’s important they’re not grown near spotlights, street lights, or other bright sources of light at night.

Can I use plant training methods on auto-flowering strains?

Can I Top an Auto? (full article with instructions)

Auto-flowering strains respond well to very light low stress training (LST) such as bending the plants to “open up” lower branches to light.

Bend too-tall branches down and away from the center of your plant

Plant training is a tactic that helps cannabis growers increase yields indoors by exposing more buds to strong, direct light from the grow light.

When training autos, the idea is to use bending to open up the plant so it grows flat and wide

A view from the side so you can see how those plants were trained to grow flat and wide

Training allows all the bud sites to grow directly under the light, so they get as big as possible

Many growers do not recommend exposing autos to plant training methods that involve cutting the plant (topping, FIMing, main-lining, etc.) as the autoflowering vegetative stage is short and plants often don’t have enough time to recover before they begin flowering.

Because of the quick time schedule, it is important to avoid stressing auto-flowering plants during their grow because the plants don’t have time to recover from problems.

However, when plants are fast-growing and healthy, many growers defoliate, top or FIM their plants with great results. When is it okay to top an auto?

Photoperiod

Since photoperiod plants can be forced to remain in the vegetative stage for as long as the grower wants, a grower can take advantage of a variety of plant training methods to shape/train the plant during the vegetative stage, including LST, topping, FIMing, main-lining, ScrOG, etc.

Training methods along with a properly timed light schedule can be used to produce very small or very large plants…whatever the grower wants!

Can I clone auto-flowering plants?

Auto-Flowering Strains

A clone is when you take a cutting of a plant and allow the cutting to grow into its own plant. Autoflowering cannabis plants cannot be cloned effectively because new clones are on the same internal “time clock” as their mother, and therefore any clone taken from her will die when she dies.

Because of this, auto-flowering clones live short lives and most growers strongly recommend against cloning auto strains because they stay extremely small and will not live long enough to produce good yields.

While autos can’t be used to make clones, it is possible to make seeds using a male to pollinate a female auto-flowering plant.

Photoperiod Strains

Photoperiod plants can be cloned, which means that a grower can continue to make more and more plants from a single seed. Cloning is a great way to get unlimited free plants which are almost exactly the same as each other.

So, You Want to Grow an Auto-Flowering Plant!

Which breeders can I trust for good auto-flowering seeds?

Which breeders can I trust for good auto-flowering seeds? These auto breeders have dedicated themselves to developing auto-flowering strains in particular, and have gained popularity for their consistency and quality.

Some Excellent Auto-Flowering Cannabis Breeders:

There are many other great breeders that offer auto-flowering seeds, but the breeders listed are known for breeding some of the best auto seeds when it comes to ease of growth, potency and yields. Let us know if there’s an auto-flowering cannabis breeder we should add to this list!

Pictures of Auto-Flowering Plants

Now here are some pictures of Autos (by various breeders and growers) to help give you an idea of what to expect when growing an autoflowering strain of cannabis.

From left to right: Dinafem Critical Jack, Dinafem Sour Diesel, Dutch Passion Blue AutoMazar

Using a small 250W HPS light, I harvested 190.4 grams, or about 6.7 ounces, between the three plants. This was my first auto-flowering grow and I was blown away by the yields, the time-to-harvest and especially the potency!

Lowryder Original
by hypermx

This was the final height of a “Lowryder” auto plant grown in a very sunny window. Lowryders tend to stay the smallest of almost all auto-flowering strains. This plant ended up having very small yields because it was grown in a window. It’s difficult to find a window that gets 5+ hours of direct sunlight each day, and generally it’s recommended that most growers avoid growing in a window if they want to get decent yields.

These are my 4 x Fastbud #2´s (this strain has now been bred into Ice Cool Auto, which may be even better). I chopped 2 a couple of nights ago and the others today. Day 65 from seed under a mixture of 400 & 600W HPS.

I´m a bit confused by this strain. The buds are quite skinny but they have weight to them and are dense as f*ck. Took a sample and quick dried and it’s a really nice smoke. Comes on really buzzy, then mellows out and gives mad munchies.

They smell incredible. Fruity and sweet, and they are very sticky.

Total dry weight for the 4 plants was 145g plus about 25g popcorn so around 6 oz in total.

View full album by Santacabrera here:
http://imgur.com/a/MndDF

These are pics of my Black Cream autos that are coming down early next week. They could come down now, but I haven´t got time to do it this weekend.

Note: Autos by Nirvana are marked with a plus + sign.

Grown in a Space Bucket using FFOF (Fox Farms Ocean Forest) soil, Big Bloom Nutes, 1 gallon bucket, 135watt cfls, inside a Spacebucket.

The pics show the plant just before harvest on Day 62. (it probably could of went 2 more days but too late now). It was untrained. I wanted to see how she grew naturally in the bucket to see how I would need to adjust for the next grow. I was going to dry the bud in the spacebucket about there was just way too much to fit all the bud in the bucket with good ventilation and space.

She had really close nodes and it shows in my opinion! From day one I kept the plant right on the lights and just lowered them down in the bucket as she grew. I think that help keep the plant from stretching which was perfect in the bucket!

View full harvest album by -Johnny5-: http://imgur.com/a/sp7SZ

Note: Autos by Nirvana are marked with a plus + sign

Grown in a Space Bucket. From the Grower: These f*cking SpaceBuckets are awesome. Finally, Day 75, I pulled this plant down for harvest. She smells so freaking good it’s ridiculous. Berry/fruity type of smell, really sweet. She “was” standing at just around 18 inches. Grown in a 1 gallon pot, with FFOF (Fox Farms Ocean Forest Soil) and Big Bloom Nutes. This plant received around 134 cfl watts for 18 hours a day. ZERO Training! (will train the next grow, she was hitting the top of the bucket). The pic on the right is the main cola up close.

This is my second grow but my first grow with auto flowering plants. I have the lights set on 18:6. They are in 5 gallon pots with Promix soil. I am also using technaflora nutrients.

Final yield was about 1.5 ounces.

White Widow Auto by Pyramid Seeds
by GorillaMass

  • Grow Lights: used a total of 6 CFLs, two on each side plus two under the reflector lamp. 6 x 23w 6500K for veg. and 6 x 23w 2700K for flower.
  • Happy Frog Soil
  • FloraNova Grow/Veg and Bloom Nutrients
  • 2 Honeywell fans

Light Schedule is 20 on and 4 off (20-4). Used that light schedule for the whole grow. This is my first time growing. The plant ended up being just under 2 feet tall at harvest. Harvested on day 67 from seed.

View full harvest album by GorillaMass: http://imgur.com/a/43VNJ

Simple grow guide for growing auto-flowering plants in soil

This simple guide to growing autos indoors uses…

Extra Growing Tips for Autos

Low to Medium Nutrient Needs

Whether you grow in soil, coco coir, or a full hydroponic setup, auto plants tend to prefer relatively low levels of nutrients compared to many other cannabis strains.

When it comes to adding extra bottled nutrients, start at ¼ strength of the recommended dose or less, and only add higher levels of nutrients if needed. In hydro use “vegetative” nutrients until you see the first signs of flowering (pistils / white hairs) around 3-4 weeks. In good soil, you don’t need to add any nutrients during the vegetative stage. After the first signs of buds, start adding “flowering” nutrients at very low strength (¼ or less to start)

Potted Auto Plants

Potted auto plants tend to do best in an airy potting mix with lots of drainage (plenty of drainage holes, and something like perlite to help add more drainage to your growing medium). This helps makes sure roots get plenty of oxygen so plants grow as fast as possible.

If growing in soil avoid choosing a “hot” (lots of nutrients) soil mix. BioBizz Lightmix soil or Fox Farms Happy Frog are good choices that don’t have too many nutrients to start. With any soil mix, it’s recommended to add about 30% extra perlite for increased drainage.

Size & How to Control Height of Auto-Flowering Plants

The final size of your auto plants is largely dependent on the strain you get. Some strains, such as Lowryders, have been bred to grow extremely short – less than 1-2 feet. Other strains can grow taller, up to 4 feet tall or even more.

As a general rule of thumb, auto plants tend to double or triple in size from when they first start showing signs of flowering/budding (usually when plants are about 3 weeks old from seed).

There are also some plant training methods that are effective for giving you more control over the final size and shape of your auto-flowering plants.

The most important thing to remember with autos is to avoid using any plant training method that involves cutting the plant. When reading about cannabis training techniques that involve cutting the plant such as topping, FIMing, or main-lining, please remember that these techniques were developed for photoperiod plants and are not well-suited to auto-flowering strains.

Instead, the best way to control height and size with autos is to use low stress training (LST) which involves bending tall branches and using gardening wire or soft ties to hold down the branches.

Here’s a great LST example by Santacabrera showing how to gently bend the middle colas of an auto-flowering plant down and away from the center without cutting or harming the plant.

Bend too-tall branches down and away from the center of your plant

When growers LST auto-flowering strains of cannabis, the general idea is to gently pull branches away from the middle of the plant, so that the plant looks like a star when viewed from above. This helps expose the lower branches to more light, while also keeping plants short. It’s important to only bend stems that are young, when they’re still soft and flexible. Older stems become woody and hard to bend.

This technique can be used on auto plants that are getting too tall for your setup, or for any stem that is growing taller than all the others. Most indoor growers want to keep a flat, even canopy when growing indoors to get the most from their grow lights.

Best Light Schedule for Autos

Most indoor growers report getting great growth rates when keeping light schedules on an 18/6 light schedule (18 hour of light and 6 hours of dark each days). 20/4 is another popular light schedule for indoor auto plants. Some growers will give 24 hours of light to auto plants, but others believe that auto plants develop better when given at least a few hours of darkness each day.

When growing autos outdoors, basically you just want to give your plants as much direct sunlight as you can each day. Other than that, you don’t need to worry about light schedules When growing outdoors, more hours of direct sunlight = bigger yields. It is almost impossible to give plants too much light when growing outdoors (as long as heat is under control).

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