Cannabis Autoflower Seeds Outdoor


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Auto flowering marijuana seeds are the latest in marijuana strain technology. Auto flowering seeds pass straight from seed to flowering stage, irrespective of light cycle. Ready for faster sun-grown buds and two-harvest summers? Discover the best outdoor autoflower seeds of the highest-yielding strains for natural conditions. Award winning marijuana seeds with worldwide delivery and 100% discrete marijuana seeds shipping

Auto flowering Marijuana Seeds

At MSNL we stock a wide range of Autoflower seeds from high THC strains such as Bruce Banner, to huge yielding plants like Big Bud Auto, we’ve got a strain for every grower. Despite their small size, auto flower seeds have some huge advantages over ordinary photoperiods. This is mainly their ability to flower in a much shorter time and without a change in light cycle. But what is exactly is an autoflowering seed and are they the right choice for your next grow?

/Auto flowering Marijuana Seeds 15 2 Auto flowering Marijuana Seeds 2

What is an autoflowering seed and where are they from?

There are three main types of cannabis strain, each indigenous to a different part of the world and with their own character traits. Sativa’s are tall and wispy and grow in tropical climates such as Thailand, Mexico and South Africa. Indicas are shorter with a dense foliage and grow in cooler climates such as Afghanistan, Pakistan and India. Finally, ruderalis strains are native to colder regions of the world such as Siberia and Russia, they are shorter still and grow into dense bushy plants with shorter flowering periods than either Cannabis Sativa or Indica. It is because cannabis ruderalis originates in these cold regions of the world that they have developed the unique ability to grow and flower automatically with less daylight hours. In the mid 90’s Ruderalis strains were crossed with sativa and indica varieties to produce what we now know as auto flower seeds.

Why should I buy autoflower seeds?

Many first time growers are drawn to auto flowering seeds because of their no hassle approach to growing. However, when comparing autoflowering vs feminized there are huge benefits to for every type of grower.

Autos flower faster – Ever struggled to finish a grow cycle before the weather gets cold? Autos begin flowering in weeks 2-4 of growth regardless of the amount of light that they receive. Their flowering periods are also much shorter, and they can be grown from seed to harvest in as little as 65 days. The advantage here are that you can often fit an extra grow cycle in before the weather gets too cold for cannabis plants.

Autoflowers are smaller – Many growers see this as a disadvantage; however, their compact size is ideal for anybody growing indoors where space is limited. Growing in a cupboard or small grow tent is infinitely easier to maintain if you are using autoflower seeds. Aside from this their naturally short stature means that they are well suited to stealth growing, be it indoors or outdoors.

Autoflowers are robust – Thanks to their ruderalis genetics auto flowering seeds can grow and survive in much colder climates than photoperiod strains. For any outdoor growers in colder regions with shorter daylight hours autoflowering seeds would be best suited.

Felixibility – Auto flowering seeds can grow and flower under any light cycle all the way up to 24 hours of light. So, you can grow them outdoors, indoors, and even alongside your photoperiods if you have some spare space in your grow tent.

Easier to grow – Because of their compact size you can conveniently keep them in the same 10-15 litre pot from the start of the grow right the way through to harvest, removing the need to ever transplant them.

Buy auto flower seeds in the USA and worldwide

At MSNL seed bank we have an unrivalled range of the best auto flower seeds for sale. We ship to all US states, Canada, Australia, United Kingdom, and pretty much everywhere else in the world.

Autoflowers have become a game changer in the world of cannabis and have made good quality marijuana more accessible for the home grower. Autoflower genetics have come a long way in the last two decades, no longer are they small yielding low THC plants. Thanks to the extensive breeding programs of seed banks like MSNL, autoflowers have now developed into wide array of THC and CBD rich strains of all sizes and flavours.

Top tips for growing autoflower seeds

If done right, growing auto flowers can be one of the easiest, most hassle-free ways of growing cannabis. Their compact size and fast flowering times make them ideal for the average home grower, and now with the genetic crosses we have produced at MSNL there is no need to compromise on quality. By following these simple tips, you will produce even better buds from your autoflower grows.

Use a sensible light cycle – Although autoflowers can grow under any light cycle, using either 18/6 or 20/4 is advisable for optimum growth and quality. Cannabis plants like all living things need rest, so providing a short period of darkness of 4 – 6 hours will keep your plants will be healthy, and you will reap the benefits.

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Choose the right autoflower seeds – It may sound obvious but the biggest precursor to good quality weed is good quality genetics. Choose a seed bank like MSNL that has a solid reputation and a history of producing high quality autoflower seeds.

Avoid re-potting autoflowers – Repotting can be stressful to any plant, but autoflowers have a much shorter life than photoperiods so it is important to make good use of the time available to optimize growth. Try planting your seeds directly into their final growing container after germination, this minimizes disruption and stress and allows the plant to make the most of its vegging stage.

Avoid silly mistakes – Easily avoidable mistakes such as over and under watering, nutrient burn and light burn can take weeks for a plant to recover from. Try your best to avoid making these mistakes with autoflowers. The growth period is much shorter so time is limited, and it can cause permanent stunting of growth.

Train your plants for optimal yields – Auto flower plants are naturally smaller and more compact, but that doesn’t mean that you need to settle for mediocre yields. Using training techniques such as LST whereby you tie down the branches of the plant to widen the canopy, maximises light absorption and can massively boost yields.

Give them extra time if needed – Remember, although auto flower seeds grow much faster than ordinary photoperiods you still need to use the tried and tested methods of assessing when they are ready to harvest. Check the appearance of the trichomes using a jewellers loupe or magnifying glass to make a judgement on when they are ready. Some people grow autos for 10-11 weeks, although this may seem like a long time the wait will be worth it for better quality bud.

When should I harvest my auto flower?

What to look out for Effects of different harvest times How should it look
Hairs are still white and are sticking straight out. Don’t Harvest – The plant needs more time, and it will likely have low THC and CBD levels.
Thrichomes are 50% clear/cloudy. High Energy – This is considered early to harvest, however some weed harvested at this time tends to give a more uplifting energetic high which some users may prefer.
Trichomes are 80 – 100% cloudy and hairs have begun to darken High THC – If most of the white hairs have darkened and the majority of the trichomes are cloudy the plant will be at optimal levels of THC production. Harvest now for potency.
Trichomes are amber coloured and most of the hairs have darkened Relaxing High – Once the trichomes have gone past the period of optimum THC levels they begin to turn amber. At this point the CBN levels increase and the high becomes more relaxing or “couch locked” for higher THC strains.


Autoflowers grow much faster than photoperiod strains and can grow from seed to harvest in as little as 65 days, but it does depend on which strain you grow. Here is an average time schedule for autoflower growth.

Day Growth Stage
1-28 Seedling / Early Vegetative stage
28-35 Pre-flowering stage
35-65+ Full Flowering Stage

The first two stages will generally be the same regardless of strain, however some strains, particularly sativa dominant autoflower seeds do have longer flowering periods. So, the full flowering stage can last anywhere from 30 – 40 days depending on the genetics of the strain that you are growing.



Yes, at MSNL seed bank all of the auto flowering seeds that we stock are feminized and will produce 100% female plants. This means they will produce smokeable buds without seeds or pollen sacks.


Big Bud Auto was developed with one goal in mind, to create huge yields. Thanks to its ruderalis genetics Big Bud Autoflower is a robust strain that will grow well in almost all climates with minimal training. Growing to around 100 – 120cm tall and yielding up to 600g/m2 in just 80 days you will have a compact plant full of thick solid buds that are ready to smoke.


A potent cross of Sour Dubb and Chem Sister with a ruderalis, turned Gorilla Glue into the most potent autoflower you are likely to grow. With THC levels of up to 25% Gorilla Glue Auto flower easily rivals many of its photoperiod counterparts when it comes to potency and with yields of 500gr/m2 you will have plenty of bud to smoke from this little plant.


If you are in a hurry to get some bud, Cherry Pie Auto Flower can finish in as little as 6 weeks from flowering. New to MSNL and easily our fastest flowering strain, Cherry Pie Auto is a great tasting fruity cross of Cherry Pie and The Fog. With a comfortable 16-19% THC Cherry Pie Auto grows into a modest sized plant that is easy to maintain and ideal for the indoor stealth grower.

Outdoor Autoflower Seeds: A Complete Guide & Top Picks

These resilient ruderalis crosses flourish in pots, gardens, and empty stretches of land. Get the timing right, and you can fill your mason jars twice between Easter and Halloween!

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Can you pick any cultivar and plant as usual? Not quite.

Join us to learn about non-photoperiod open-air cultivation and discover the best autoflowers for outdoor setups.

Can you grow autoflower seeds outdoors?

There’s a debate in the 420 community on whether you should grow weed from autoflowering seeds outdoors. The straightforward answer is that you can and you should, but there are caveats to consider. After all, autoflower cannabis is a peculiar beast.

On the one hand, its ruderalis genetics makes the crops small and sturdy, lending themselves to unpredictable natural setups. On the other hand, it takes mere weeks from pop to crop. There’s little time to address health issues, and harvests can suffer.

What should a grower do?

They should choose outdoor autoflower seeds with suitable growth traits. Once you have a cultivar of above-average hardiness, the question comes down to your climate and skill levels.

Cultivators in harsh climates—heavy rainfall, wind, and cold nights—face issues with non-photoperiod gardens. Those in sunny, dry, and balmy environments see greater success.

Experience also matters for autoflower seeds outdoors. Plant stress prevention is your number one priority. So, learn the signs of plant distress and ways to solve it.

When should I plant autoflower seeds outside?

Growing autoflowers outdoors centers around condition optimization, and that starts with timing. We’re dealing with two scenarios here.

If you’d like to collect two harvests per summer in the Northern Hemisphere, plant outdoor autoflower seeds in early May. Late April is acceptable in regions with Mediterranean-style climates. The point is to avoid the last hints of frosty weather.

If growing a single batch, wait longer to take advantage of summer in full bloom. Sowing in June for an August harvest gets your buds even fatter, larger, and stickier.

What do the best outdoor autoflower strains have in common?

There’s no one best autoflower for outdoor setup, but growers agree the finest specimens share the following traits:

  • Autoflowering strains for outdoor setups are stress-resistant. For that reason, we mostly discuss indica-dominant strains and particularly hardy sativa paired with ruderalis.
  • The highest-yielding autoflowers outdoors can compare with prolific photoperiods. They originate from fruitful indica or sativa parents.
  • These weed seeds are genetically modified for added ease. Grow from autoflowering feminized seeds outdoors to avoid males in the ranks and accidental pollination.
  • Top outdoor autos match photos in terms of potency. The strongest autoflower strains reach insane THC levels despite their short life cycle.

5 best outdoor autoflower seeds to grow in 2022

Here are the five top autoflowering outdoor seeds according to our standards.

Note: We’ve noted the time these strains spend in the vegetative stage. Once they flower, it’s another five weeks before collecting the buds.

Bubba Kush

Bubba Kush is a potent indica cultivar with an intense flavor profile. It’s the perfect nighttime smoke for deep relaxation.

These outdoor autoflower seeds enjoy well-aerated soil mixed with coco coir. Hefty nitrogen feedings and a dash of calcium and magnesium aid the root system.

The only actual concern is moisture. Bubba Kush prefers dry climates and could get moldy if the air is too humid.

Trim the top or let the crop reach its full five feet in natural soil when it hits flowering. Colder nights in late summer bring a striking purple hue to its buds and foliage.

Type Indica-dominant hybrid
THC 15–20%
Aroma Earth, incense, citrus
Effects Relaxing, sedative, stress-busting
Outdoor yield 3.5–5 oz./plant
Time to flower 8–9 weeks

Gold Leaf

Gold Leaf is one beast of a herb, plastering a grin across your face in one toke. Its mysterious origins and diesel-forward bouquet make it much-loved among old-schoolers and connoisseurs.

This strain is among the highest-yielding autoflowers outdoors. Plants do well in any medium, displaying incredible resistance to pests, mold, and mildew.

Waterings should be frequent but limited to avoid overwatering. Also, since Gold Leaf is taller and slimmer than your usual auto, be extra careful when trimming to avoid physical harm.

Defoliation and heavy phosphorus feedings help the buds fatten in flowering. The crop doesn’t mind some cold, but consistent sunlight exposure elevates the results to impressive levels.

Type Indica-dominant hybrid
THC 17–18%
Aroma Diesel, earth, pine
Effects Uplifting, euphoric, relaxing
Outdoor yield 15–17 oz./plant
Time to flower 7–8 weeks

Super Silver Haze

Super Silver Haze is a sativa that rejuvenates from the inside out. Ideal as a wake ‘n’ bake or a daytime toke, it’s a favorite among go-getter tokers.

Crops from these autoflower outdoor seeds stretch to around 3.5 feet without space restrictions. Branches are lanky with scarce foliage, letting you skip trimming and still get fat, sun-grown buds.

Choose organic soil and stick to light fertilizer, as this one is prone to nutrient burn. Water generously and install protection from pests and wind.

Once flowering begins, increased phosphorus helps flowers emerge and get sticky with trichs. Tie bamboo sticks around the branches if you notice bending.

Type Sativa-dominant hybrid
THC 15–19%
Aroma Spice, citrus, floral
Effects Uplifting, motivating, euphoric
Outdoor yield 4–6 oz./plant
Time to flower 8–9 weeks

Sweet Tooth

Sweet Tooth distinguishes itself with incredible flavors. Its mellow cerebral punch and full-body comfort are something any toker can appreciate after a long day at the office.

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Plant these outdoor autoflower seeds in a sunny and breezy spot. Organic soil and feeds leave these crops humming in delight. They remain under 3 feet tall, but the vigorous foliage calls for a careful trimming hand.

Basic gardening practices are enough for this charmer. When it comes to feeding, you’re good with a simple NPK solution.

Given its swift life cycle, Sweet Tooth barely ever requires training. Ensure plenty of sunshine, provide food and water, and look forward to flowers.

Type Indica-dominant hybrid
THC 13–16%
Aroma Tropical, floral, berry
Effects Relaxing, uplifting, focused
Outdoor yield 2.5–7 oz./plant
Time to flower 6–7 weeks

Girl Scout Cookies

Girl Scout Cookies is a classic, appreciated world-round for its balanced effects and delectable aromatic bouquet. A puff elevates your mood, washes away concerns, and puts you to sleep.

These crops remain tiny, rarely stretching past 3 feet in height. Discreet cultivation and branch management are no issues with GSC, and neither is mold. Foliage density could prevent light from reaching the buds, so start trimming early.

Crops from these autoflower outdoor seeds appreciate organic fertilizer. Worm castings in the soil feed your plants and boost bud flavor.

Well-aerated media strengthen the roots, while sunshine encourages countless bud sites to pop along the plant stem.

Type Indica-dominant hybrid
THC 18–22%
Aroma Fruit, nuts, incense
Effects Euphoric, relaxing, creative
Outdoor yield 2.5–5 oz./plant
Time to flower 8–9 weeks

Where to find the best autoflowers for outdoor growing?

All autoflower outdoor seeds we listed are available at Homegrown Cannabis Co. So, you’re already in the right place to buy seeds and set yourself up for success.

Genetics are the cornerstone of healthy plants, so we deliver expertly-sourced American seeds to each shopper. Follow our growing tips, and you’ll achieve an abundance of dispensary-level buds at home.

What’s more, these five outdoor autoflower seeds are only the tip of the iceberg. We stock hundreds of non-photoperiod strains. You’re free to explore our library and find other herbs that fit your taste.

Autoflower outdoor seeds: Frequently asked questions

Let’s finish with some common questions about this cultivation style.

Are autoflowers worth growing outdoors?

Many growers keep their non-photoperiods indoors to optimize yields. That said, growing autos outdoors can be very prolific.

You won’t see photoperiod-tier harvests without extreme climate control and training, but auto crop output is nothing to scoff at. Results are even better with the best outdoor autoflowers from our store.

How much does an outdoor autoflower yield?

Yield size depends on the strain, setup, care, and training. There’s no single answer to this question—amounts range from under 2 to over 20 ounces! We can tell you that autoflower yields are usually smaller outdoors than indoors.

Indoor growers optimize conditions and train their crops, sometimes doubling harvest size. Don’t let that discourage you, though. Between our outdoor autoflower seeds and proper care, you get considerable amounts of weed without setting up an entire grow room.

How big do autoflowers get outdoors?

Like harvest size, plant height depends on your strain and training techniques. Generally speaking, crops from outdoor autoflower seeds stay pretty small.

Most autoflower phenotypes remain under 2 feet in height, even without vertical space restrictions. Some sativa breeds stretch taller, but rarely past 4 feet.

Autoflowering outdoor seeds: Easy, fast, productive

Thinking of launching your next cultivation adventure in natural conditions? Our outdoor autoflower seeds are a must. Tasty, potent, robust, and high-yielding—what’s not to love?

Watch for signs of plant stress, use the summertime sunshine, and enjoy a seamless cultivation season. Fill your large garden with tiny crops, or have your small balcony host one magnificent herb.

Now that you know about autoflower outdoor seeds, hop to our shop to get some for yourself. Stay tuned to our blog for guides on all things cannabis.

About the author: Derek LaRose

Also known as Kronic from The Cannabis Kronicles, Derek LaRose is a young ambitious cultivator and a staple educator for indoor cultivation.


Our range of autoflowering outdoor seeds allows you to combine the benefits of ruderalis genetics with strains that simply love the great outdoors. Most varieties of cannabis simply need the outdoors to reach their potential, with the natural light and fresh soil helping them grow vigorously and naturally. The term ‘autoflowering’ indicates that the strain has a parent of the ruderalis variety, which means that the plant will have a few qualities rarely found in photoperiod strains. The main difference being that autoflowering strains can grow regardless of how much light they get. This makes them ideal starting strains for beginners and new medical growers. Autoflowers have a greater resistance to diseases and pests which is an advantage to plants that grow outdoors. They also have a far greater tolerance for lower temperatures and harvest quicker than most photoperiod strains. Small in size, autolfowers grow up to 1 metre on average, allowing for multiple grows and ability to maximise your harvests. What more could you want?

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