Growing Indoor Autoflowers, Beginners Guide.

What is autoflowering cannabis?

How to grow autoflowers indoors is simple: over time, plants will flower automatically rather than waiting for a specifically timed light cycle. In other words, autoflowering marijuana plants start flowering on their own as also mentioned in their own name. The autoflowering start of flowering occurs after a relatively short vegetative period of 2-4 weeks, after which the flowering phase will automatically start and will last approximately 4-6 weeks. During the vegetative phase the small Maria plant will concentrate on the growth producing many green and large leaves, in this phase there is no difference in behavior with photoperiod cannabis. To trigger the flowering there will be no need for any change between hours of light and hours of oxen. Some schools of thought even leave cannabis autoflowering for up to 24 hours of light per day. From our point of view there is no benefit in the yield of the product on the contrary, without giving at least 3-4 hours of oxen the plant can go into stress accelerating flowering by sacrificing the yield, already limited for these varieties.

Unlike photodependent varieties which need a change in the lighting period to switch from the vegetative phase to flowering.

The Genetic Selection for autoflowering genetics

This unique process is created when auto seed breeders fold into genetics from Cannabis ruderalis, a subspecies of the cannabis plant that is known for its auto characteristics and short stature. The genetics of cannabis ruderalis are essential for the creation of autoflowering strains. Crossing the autoflowering ruderalis with indica and sativa strains results in a small maria plant that does not rely on photoperiods to flower, but grows and blooms in its own time.

Indoor flowering autoflowering cannabis plant

Autoflowering Outdoors / Indoors does not bloom, what to do?

If your auto cannabis plants are not flowering, there will certainly be a problem in your grow environment. The most common is lighting. If you have poor quality lamps, they will certainly cause a slowdown in the growth stages of the plant. Most lamps that are too cheap will be cheap and not powerful enough. This will cause a delay in the growth time of the strain and as a result it will flower very late and produce extremely low yields. In case the lamps are not the problem, it can be a delay caused by a possible stress, here it will be up to you to identify it. In general, another possible stress that novice growers cause can be fertilizer overfeeding.

Not all automatic cannabis genetics are created equal

Most cannabis strains have been specially selected to generate indoor autoflowering strains that produce medium sized plants in a relatively short time. In other cases, however, breeders have preferred to select genetics thinking about the risks and dangers of growing autoflowering cannabis outdoors, in fact some outdoor automatic strains can give you explosive yields in any situation. An outdoor autoflowering small maria plant will on average produce a smaller yield compared to photoperiod cannabis plants.

How to Grow Indoor Autoflowers

Each of us at least once wondered how to grow autoflowers perfectly without subjecting them to possible stress. The answer to this is easier than you think, in fact just providing them with the right doses and quantities of light, water and nutrients to make them grow to the top.

The Advantages and Disadvantages of Autoflowering Cannabis Seeds

There are a number of reasons to consider growing autoflowering strains for both indoor and outdoor cannabis.

  • Growing autoflowers outdoors: Growing autoflowers outdoors means that auto seed plants will start producing buds regardless of the number of hours of sunlight they receive; this means you don’t have to worry about running a light deprivation system or supplementing light if you’re looking to get more yields during the season. Also on the market you can find some genetics selected to grow autoflowering in the best way.
  • Automatic Indoor Cannabis Plant Cultivation: For indoor autoflowering cultivation we will quickly have buds, as they generally complete maturity after three months. As above on the market you can find selected cannabis strains for indoor autoflowering cultivation.
  • Autoflowering Light Hours: Autoflowering plants can receive more than 12 hours of sunlight per day and create larger buds in less time than many regular cannabis plants. The flowering time of autoflowering cannabis in this case is short but at the same time gives a bountiful harvest.
  • Content Size also means optimization: Autoflowering plants are small and stealthy; they are perfect for a small indoor grow box or outdoors where you don’t want your neighbors to see what you are doing. Also we can opt for a growbox for autoflowering of small size.

Disadvantages of Autoflowering Cannabis Plants

There are, however, reasons why auto plants aren’t as popular as regular indica and sativa cannabis plants. Most automatic strains are small in stature and do not produce large yields. Other problems with these strains can be higher electricity bills and the inability to truly train plants to make the most of their grow space. Nonetheless, we recommend that you don’t cut your spending too much with automatic cannabis as it needs to be treated with special care and attention.

Since the introduction of the original automatic strains over the past decades, significant improvements have been made to these genetics. First, the potency of autoflowering strains has increased dramatically since their initial introduction. Plus, there are now hundreds of types of autoflowering seeds, offering a huge selection to choose from. Because of these improvements, autoflowering seeds are worth a lot to any curious gardener looking to try something new.

Prepare your next harvest

To get the most out of autoflowering seeds, it’s a good idea to prepare the next batch of plants while harvesting. This means popping the seeds before harvesting the actual plants so your room continues to produce. Since these are autoflowering plants, you can have plants that are just starting in the same room as those that are ending without worrying about lighting.

Small mary plant grow indoor autoflowering

Grow Autoflowering Indoor and Outdoor

We have seen in this article all the advantages and how to grow autoflowers, now we are here to talk about fast indoor and outdoor autoflowering seeds, which are the best? The fastest indoor and outdoor autoflowering seeds in our catalog are: Big Bud Auto, Purple Punch Auto, Amnesia Auto and Super Lemon Auto.

How to Grow Autoflowering in the Best Way

There are many methods on how to grow these seeds, all certainly valid and suitable for the subjective needs of many growers, here are some tricks and techniques that will allow you to get the best results with your autoflowering hemp seeds. A marijuana seedling autoflowering must be tough enough before practicing these techniques.

Autoflowering genetics require some preparation, as they will grow quickly and start flowering even though many growers may not be ready to harvest. If not properly prepared, we risk getting a small marijuana plant. However, follow these steps and you should be successful in your marijuana garden.

1. Train your plants

In general, you will need to train your plants during the vegetative phase. For plants of this genetics, this period may be shorter than two weeks, which means time is limited. When flowering, these plants will use all their strength to produce flowers, not just leaves. In particular, during the flowering phase the leaves become more and more yellow to transfer all their strength to create large and compact flowers.

LST training Low stress

To start, consider replenishing the plant after developing three knots to promote a more even canopy. Another LST (Low Stress Training) method involves training the plant by pulling it down to create new upward growth stages. Once your plants start blooming, you shouldn’t outrun them. Prune your plants conservatively for no more than a week in bloom.

2. Climate considerations

When growing autoflowering cannabis plants, you are allowing the plants to enter the flowering phase when they should be in vegetative growth. Since there is no need to go through photoperiod lighting cycles, many people start autoflowering plants early in the season (for example, in March) or late (for example, in September). At this time of year it is important to remember that plants still need heat to grow, and there may also be considerable rainfall which puts the buds at risk of rot. To combat these problems, consider growing in a greenhouse to provide protection from the elements.

Autoflowering marijuana plants grown in an indoor grow box

3. Go easy on nutrition

Autoflowering strains do not need to be heavily fed due to their small size and the short amount of time they spend in the vegetative cycle. They eat very gently and you understand that they don’t need as many nutrients for vegetative growth as nitrogen. Also note that these vegetative nutrients are best to use if they are readily available for the plant to use quickly. Taking this into account, we can think of experimenting with the new and innovative Vegan growth methods. For Harvesting Vegan Cannabis With Homemade Fertilizers. These fertilizers can often be better than chemical ones.

4. Gradually harvest your flowering autoflower

Automatic cannabis plants often don’t have time to develop a canopy, which means you’ll keep the buds that are further down on the plant. For this reason it is a good idea to collect plants sequentially. Get the colas first, then allow more time for the lower buds to firm up before being harvested later.

What is the size of autoflowering plants?

The size of autoflowering cannabis plants varies depending on numerous factors, from genetics, where it is grown, environmental conditions, etc. In general, an autoflowering cannabis plant will grow to a height of between 30 and 100 cm, the peak of height is reached when the autoflower is in bloom; it will therefore be a small maria plant compared to photoperiod genetics that can reach up to 400 cm in an outdoor cultivation.

Small Maria plant, advantages in comparison to the photoperiod variety

Autoflowering seeds distinguish themselves from photoperiod seeds due to their ability to generate autoflowering plants that are difficult to spot due to their size. This is a great advantage for any grower, especially outdoors, because with a small Maria plant it will grow discreetly, keeping thieves away from our autoflowering cannabis seedlings.

Distance between Indoor Autoflowering Plants: All the answers

The distance between marijuana plants has always been a taboo for both indoor and outdoor growers, in this specific case, as far as indoor autoflowering plants are concerned, we should aim for an overall distance of about 10-20 cm. Obviously all cultivated plants must stay within the light spectrum of the grow lamp, otherwise they will not continue their life cycle at their best.

What is the Best Indoor Autoflower Strain?

There are hundreds of varieties of cannabis between autoflowering and photoperiod, but there are better indoor autoflowering marijuana genetics than others for this type of cultivation in grow boxes.

For example, in our catalog of automatic flowering cannabis seeds we find genetics Auto Magnum XXL: perfect genetics for an excellent Indoor Cultivation that guarantees super compact, resinous and XXL-sized yields as its name suggests, it is in our opinion the best variety to be grown in grow boxes.

In our Ebook section you can find over 40 books in 4 different languages follow the link to download all the books you want for free.


Grace Genetics team

Our team of cannabis experts publishes new and updated informational articles on current news from the world of cannabis on a weekly basis, as well as aids and guides on growing marijuana plants.

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