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Autoflowering Cannabis Seeds

Autoflowering marijuana seeds produce plants that begin their flowering at a certain age regardless of the light hours received, meaning they can be harvested following the schedule of the grower. This has been achieved by selective crossing with the cannabis strain Ruderalis. These varieties give you the chance to harvest on the date that you choose.

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How is auto-flowering marijuana different from other marijuana?

Historically, cannabis was cultivated during the normal planting period, as it is a seasonal plant that regulates its vegetative development by photoperiod, meaning that the number of hours of light that the plants receive was vital to the start of flowering.

However, in latitudes where summers are short but with very long days – in some cases more than 20 hours of light a day – cannabis evolved to carry out its entire biological cycle irrespective of photoperiod, since otherwise, the 20 hours of light a day would have kept the plant in a vegetative state with no opportunity of flowering.

The origin of autoflowering marijuana seeds

Cannabis Ruderalis is originally from Central Russia, with the ability to bloom at a certain age irrespective of photoperiod, an amazing feature that allows it to bloom outside of conventional growing seasons. Although Ruderalis is not a large producer of resin, its autoflowering character is a genetic trait that is an interesting addition to present cannabis varieties so as to to be able to modulate the date of the harvest for the benefit of the cultivator.

The first Autos were not very popular because of their small size and low potency, but the potential offered by the Ruderalis strain was recognised by breeders who crossed it with conventional strains, to develop a strain which allowed you to choose the, the hours of light, temperature during flowering period, and harvest date, therefore maximizing favourable conditions and giving buds of a much higher quality.

Types of autoflowering marijuana

Although some autoflowering seeds are classified as ‘outdoor marijuana’, we must not forget that the this classification depends on the climate of the area where they are to be grown, and that no one type of seeds is suitable for all areas, due to the differences in climate. For example, in Spain all varieties can be grown outdoors, but in Holland or Switzerland, only the quickest genetics would qualify for this category.

Whilst some seeds are classified as interior autoflowering seeds, meaning that they can not be grown outdoors in certain cold areas of the planet, all varieties of cannabis can be grown indoors with more or less ease.

Amongst the huge selection on the market, it is easy to find many cheap autoflowering seeds, but given the exhaustive work needed to achieve automatic flowering in a desired variety, it is advisable to only purchase these seeds from specialized seed banks, whose years of experience give a guarantee you can rely on.

The first automatics on the market had low rates of resin production, but many generations of crosses and selection later, production and the power have been improved to impressive levels, giving autoflowering qualities, whilst maintaining high levels of cannabinoids and terpenoids in the resin, culminating in jewels like Gnomo Auto, the auto version of our Mataró Blue, a super stable strain of great quality that guarantees the finest autoflowering results for all that grow her.

Buy the best autoflowering cannabis seeds from the Kannabia collection online. Harvest on the date you choose!

Autoflowering cannabis seeds

Our comprehensive selection of autoflowering cannabis seeds has been expertly bred to flower regardless of light cycle. Autoflowering cannabis plants take less time to flower and can be harvested multiple times per season.

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What Are Autoflowering Cannabis Seeds?

Autoflowering cannabis seeds produce plants that flower on their own after 2–4 weeks of growth. Growers don’t need to worry about switching the light schedule to initiate and maintain the flowering phase, like they would if growing feminized photoperiod cannabis.

Autoflowers also need much less time to grow. Some varieties are ready to harvest in a short 8 weeks after sprouting. Plus, autoflowers are compact, which makes them great for indoor growing. Because they are so convenient, autoflowers are (not just) ideal for beginners to cannabis cultivation.

Non-Photoperiod Strains: What Does It Mean?

Feminized (photoperiod) cannabis plants flower depending on the hours of light they receive. Out in nature, they start to bloom when the days get shorter at the end of summer. Indoors, cultivators initiate flowering by adjusting their grow lights to 12 hours of light and 12 hours of darkness.

In contrast, autoflowering strains flower based on age, independent of light hours, which means they are non-photoperiod strains.

Autoflowers have several noteworthy characteristics:

  • Plants flower automatically after 2–4 weeks.
  • The average period between planting and harvest is 10 weeks.
  • Autoflowering seeds are also feminized. No need to worry about male plants.
  • Plants stay small (30–100cm).
  • They don’t attract too much attention. Ideal for stealthy grows.
  • You can harvest several crops per season.

Particularities of Autoflowers

Modern autoflowers rival feminized photoperiod strains (and some even surpass them) in terms of potency, yield, and aroma. Yet, they still provide the same great benefits as mentioned above, along with having a reputation for being particularly stable and sturdy.

These days, autoflowers can satisfy even the most demanding of users: Recreational users won’t have difficulties finding automatic varieties rich in THC, and holistic users can get autoflowers low in THC but high in CBD to benefit from the non-psychoactive cannabinoid.

Who Uses Automatic Cannabis Strains, and Why?

  • Growers: Growers like autoflowers because they are convenient and easy, producing a fast harvest with decent yields. With their compact size, they are among the best plants for growing in small spaces—great for micro-grows or putting a plant or two on a balcony. They also make good strains to grow outdoors as they are resilient and robust. Plus, their small size makes them a good choice for stealthy guerrilla grows.
  • Smokers: Recreational users can enjoy autos just like feminized photoperiod cannabis. If you’re smoking for the high, which can be anything from relaxing to uplifting, fun, and giggly, you can find the right autoflower to suit your tastes! Some autoflowers are slightly lower in THC than the average strain, making them ideal for people who like a milder and more balanced effect when smoking cannabis.

How to Grow Autoflowering Seeds

Use light, well-draining soil

For autoflowers, you want soil that is even lighter than that used to grow feminized photoperiod cannabis plants. If needed, amend your soil with perlite to increase airiness and drainage.

Indoors vs outdoors

Indoors: No need to switch your lights to a flowering schedule like with photoperiod cannabis. You can keep your autoflowers on an 18/6 (18 hours of light, 6 hours of darkness) or 24/0 light schedule from seed to harvest.

Outdoors: You are not as beholden to the natural seasons as with photoperiod plants. You can plant your autos at any time of the year, provided there is no frost. Harvest 8–10 weeks after planting. If you plant your autoflowers several weeks apart, you can achieve several harvests per year! Autoflowers are stealthy and compact. This makes them perfect for low-key outdoor operations.

Optimal temperature and humidity for growing autoflowers

Keep your grow room’s temp at a moderate 21°C (room temperature) for healthy growth. Colder temperatures or excessive heat can lead to growing problems.

Optimal humidity for your autoflowers depends on your plant’s age. In the first few weeks, they prefer a more humid environment. Reduce relative humidity to 40–50% when your plants start to flower to reduce the risk of mould.

What kind of nutrients do autoflowers need?

In general, autoflowers are smaller than feminized photoperiod cannabis. Smaller plants require less nutrients than large plants.

If you’re using commercial cannabis nutrients, give only ½ or ¼ of the recommended dose to your autoflowers. When using commercial potting mixes that are pre-fertilised, you will likely not need to feed until your autoflowers start to bloom, at about week 3 or 4.

What kind of water for autoflowers?

With autoflowers being smaller and having a smaller root system, they will also drink less than large feminized photoperiod plants. Don’t overwater, and allow the soil to dry out between waterings.

When growing in soil, the optimal pH level of your water/nutrient solution is 6–7. You can adjust your water to the correct pH level using natural pH “up” or “down” products.

What about plant training with autoflowering cannabis?

Plant training techniques such as topping, FIM, super cropping, and defoliation are not recommended for autoflowers. Any training that involves damage to your plants will temporarily slow or halt their growth and requires time for recovery—time that autoflowers don’t have (given their limited lifespan).

On the other hand, you can try gentle plant training such as LST (low-stress training), where you bend down the stems and branches to create an even canopy and optimise light exposure. Skip the parts that involve any cutting or pinching.

Autoflowering Cannabis Seeds: Questions & Answers

Autoflowering Info

Cannabis seeds can be freely distributed within the EU under the principle of mutual recognition. However, it is your own responsibility to research your local laws and regulations before ordering.

RQS autoflowering cannabis seed selection offers a wide range of sativas, indicas and hybrids, catering to every taste.