Top 10 Autoflowering Strains To Grow Outdoors

The top 10 autoflowering strains to grow outdoors in 2021, get on your way to grow some incredible nugs!
28 April 2021
20 min read
Top 10 Autoflowering Strains To Grow Outdoors

 

One of the best traits about autoflowering Cannabis, is how these tough resilient plants can adapt to all climates allowing a grower to harvest top grade buds all year round. Growing autoflowering strains outdoors can be tricky due to weather conditions or not-so-good genetics. To avoid a bad experience you need to choose resilient and high yielding autoflowering strains. This will allow you to successfully harvest all year long without too much worry even in cold or hot climates. Below are our top ten strains you should consider growing in 2021, so you can keep those curing jars full to the brim.

1. Growing Autoflowers Outdoors

Autoflowering strains have a mix of different cannabis species including Ruderalis, this makes them extremely resilient for growing outdoors, being able to withstand not only hotter and colder climates but also bugs and mold. These characteristics along with the autoflowering trait make it possible for growers to cultivate autos outdoors and harvest all year long without having to worry about the amount of light they get, although the yields may vary if your plant gets more (or less) sun, you will be pleased with the results. The amount of light you get in each season may vary depending on where you live, but you can use this table as a general guideline:

 

DurationDec 1-Feb 28Mar 1-May 31Jun 1-Aug 31Sep 4-Nov 30
SeasonSummerFallWinterSpring
Average Hours of Light14hrs11hrs10hrs12hrs

Approximate hour of sunlight per season in the northern hemisphere1.
 

You don't actually need to make a table, you can obviously check on the internet or download an app to have an idea of the expected weather throughout your growing cycle, this makes it possible to plan ahead and prepare for eventual storms or other things. For example, if you're expecting rain or strong windstorms you can improvise a homemade greenhouse to protect your plants.

2. Orange Sherbet Auto

Big yields and even bigger flavors come to mind when talking about our huge and incredibly resilient Sativa-leaning hybrid owner of delicious citrusy top-shelf terpenes; Orange Sherbet Auto. A truly monster resin producer that makes for the best of the best hashes and extractions out there, perfect for all hash heads out there.

Orange Sherbet Auto
Orange Sherbet Auto
Genes
Sativa 70%/Indica 30%
Genetics
Orange Sherbet Auto
Flowering
9 – 10 weeks
Harvest
500 – 650 gr/m2
Height
110 – 150 cm
THC
Up to 24%
CBD
< 1%
Autoflowering
Yes
Buy seeds from 13,00 €
1 fem
13,00 €
2 fem
24,00 €
3 fem
36,00 €
5 fem
55,00 €
10 fem
99,00 €
25 fem
215,00 €
50 fem
365,00 €
100 fem
590,00 €
500 fem
1 950,00 €
1000 fem
3 400,00 €
Pack
3 fem
Add to Cart
36,00 €
 

This is an extremely potent citrusy beast and one of our tallest hybrids, making it perfect for commercial growers and hash makers who want to take their extractions to the next level, due to its impressive trichome production and the mouth-watering orange flavors.

 

Top 10 strains to grow outdoors: orange sherbet auto

Orange Sherbet Auto by our grower Hawkbo from GrowDiaries.
 

This Sativa-dominant strain can grow up to 150cm in all types of climates, especially warmer ones while yielding up to 650gr/m2 of extremely delicious resinous buds with dense large-sized calyxes that will leave a strong fruit smoothie flavor in your mouth. You'll be rewarded with flowers that test as high as 24% THC which delivers an uplifting, exhilarating, energizing, and creative effect in around 9-10 weeks.

 

Top 10 strains to grow outdoors: orange sherbet auto

Orange Sherbet Auto by our grower Hawkbo.
 

The high THC levels come hand-in-hand with a delicious combination of orange, tangy, and sweet terps that end up tasting as fresh orange juice combined with tangerine sorbet and a couple of drops of lemon juice, giving this strain one of the most delicious flavors out there.

Grow Tips

  • An extremely resinous cultivar that produces a great amount of sugar trim for making hash and extracts. 
  • She reacts very well to plant training such as low-stress technique and pruning
  • Better suited for growers with unlimited growing space outdoors, as she has a tendency to grow tall.

3. Gelato Auto

The ultimate Cali strain and one of the most popular cannabis strains all over the world when it comes to potency and flavor; Known for its extremely hard-hitting effect and kept as a classic due to the delicious uncomparable taste.

Gelato Auto
Gelato Auto
Genes
Sativa 55%/Indica 45%
Genetics
Gelato Auto
Flowering
9 weeks
Harvest
400 – 550 gr/m2
Height
70 – 100 cm
THC
Up to 26%
CBD
< 1%
Autoflowering
Yes
Buy seeds from 13,00 €
1 fem
13,00 €
2 fem
24,00 €
3 fem
36,00 €
5 fem
55,00 €
10 fem
99,00 €
25 fem
215,00 €
50 fem
365,00 €
100 fem
590,00 €
500 fem
1 950,00 €
1000 fem
3 400,00 €
Pack
3 fem
Add to Cart
36,00 €
 

This medium-tall Indica-dominant hybrid performs superbly well in all types of climates where it produces vibrant green buds golden orange stigmas and delivers massive yields in 63 days, making it perfect for everyone that wants to harvest top-shelf flowers really fast.

 

Top 10 strains to grow outdoors: gelato auto

Gelato Auto from our grower Hawkbo.
 

You will experience sweet cookie flavors with zesty citrus hints that offer a giggly, upbeat, and couch-lock effect if smoked too much so make sure you get comfy on your sofa if you're planning to have a smoke sesh.

Grow Tips

  • Due to her compact growth structure, it is a good idea to defoliate some of the fan leaves that may block the lower parts of the plant early on.
  • Be sure to have a good carbon filter when drying this strain out, as the aroma is very loud.
  • Another fabulous producer of high-grade sugar leaf that makes top-shelf hash and extracts.  

4. Wedding CheeseCake Auto 

Wedding CheeseCake Auto is a superb and very well-balanced hybrid; a monster of an autoflower that can grow up to 130cm. This strain has an earthy, cookie dough terpene profile with hints of a fruity baked tart that is perfect for those with a sweet tooth and lovers of exquisite flavors.

Wedding Cheesecake Auto
Wedding Cheesecake Auto
Genes
Sativa 65%/Indica 35%
Genetics
Wedding Cheesecake
Flowering
9 – 10 weeks
Harvest
450 – 600 gr/m2
Height
90 – 130 cm
THC
Up to 24%
CBD
< 1%
Autoflowering
Yes
Buy seeds from 13,00 €
1 fem
13,00 €
2 fem
24,00 €
3 fem
36,00 €
5 fem
55,00 €
10 fem
99,00 €
25 fem
215,00 €
50 fem
365,00 €
100 fem
590,00 €
500 fem
1 950,00 €
1000 fem
3 400,00 €
Pack
3 fem
Add to Cart
36,00 €
 

A very fast flowering hybrid that only takes 8-9 weeks from seed to harvest, she is an excellent choice for commercial growers, and those looking to achieve multiple harvests throughout the year.

 

Top 10 strains to grow outdoors: wedding cheesecake auto

Wedding CheeseCake Auto from our grower Hawkbo.
 

Despite only taking 63 days to completely mature, you can expect big yields of chunky buds that flaunt lime green hues with a touch of magenta and pinks, yielding up to 600gr/m2. Thanks to the characteristics inherited from its parents, Wedding CheeseCake Auto can grow up to 130cm and perform extremely well in all types of climates.

 

Top 10 strains to grow outdoors: wedding cheesecake auto

Wedding CheeseCake Auto from our grower Hawkbo.
 

When smoking it, you will experience a combination of sweet, earthy, and fruity tastes that taste like a baked tart or a creamy cheesecake, this strain offers extremely bold flavors that will leave your mouth watering after every puff.

 

Top 10 strains to grow outdoors: wedding cheesecake auto

Wedding CheeseCake Auto from our grower Hawkbo.
 

This beautiful cultivar produces silver-coated buds that sparkle from afar and can have up to 22% THC, which offers a more cerebral effect that turns into a deeply relaxing high that is better suited for smokers with a higher tolerance.

Grow Tips

  • We recommend this cultivar for growers who experience short summers and need a fast flowering, tough strain. 
  • Hash makers and extractors will be able to make incredible products with Wedding CheeseCake Auto
  • Growers in a hot climate can harvest this strain every 2 months with excellent results.

5. Gorilla Glue Auto

A very large-sized plant that is capable of enormous yields in 9-10 weeks making it a must for those who want a fast grow cycle without affecting the quality of the buds that come along with a very unique pine, citrus, diesel taste.

Gorilla Glue Auto
Gorilla Glue Auto
Genes
Sativa 65%/Indica 35%
Genetics
Gorilla Glue Auto
Flowering
9 – 10 weeks
Harvest
450 – 600 gr/m2
Height
60 – 130 cm
THC
Up to 24%
CBD
< 1%
Autoflowering
Yes
Buy seeds from 13,00 €
1 fem
9,10 €
2 fem
16,80 €
3 fem
25,20 €
5 fem
38,50 €
10 fem
69,30 €
25 fem
150,50 €
50 fem
255,50 €
100 fem
413,00 €
500 fem
1 365,00 €
1000 fem
2 380,00 €
Pack
3 fem
Add to Cart
25,20 €
 

Gorilla Glue Auto has unbelievably sticky buds and a THC level of 24%, making her a hash makers dream; An ideal strain for outdoor growers who cultivate in a terrace or balcony, or for indoor growers who grow in a sea of green setup as she can stay as low as 60-100cm.

 

Top 10 strains to grow outdoors: gorilla glue auto

Gorilla Glue Auto from our grower TheWeedMan.
 

The buds are dark green with fat pointy calyxes that develop extremely chunky, dense, and completely covered in resin, and despite her short stature, you can expect up to 600gr/mwith this strain.

 

Top 10 strains to grow outdoors: gorilla glue auto

Gorilla Glue Auto from our grower BlackVeined.
 

Her taste is as potent the effects she delivers, after the first puff, you will experience a very refined and unique piney and citrusy taste with subtle diesel undertones that will leave you glued to your sofa.

Grow Tips

  • Adding support to the side branches will help the plant focus on growing dense buds.
  • Highly resistant to colder climates and powdery mildew. 
  • This cultivar reacts very well to being tied down during the early stages.

6. Mimosa Cake Auto

One of the most powerful and fruity from Fast Buds, a very refined and improved cross of the Cali classics now available in autoflower version for all auto lovers. The best of both worlds when it comes to the yields, trichome production and terpene profile.

Mimosa Cake Auto
Mimosa Cake Auto
Genes
Sativa 60%/Indica 40%
Genetics
Mimosa Cake Auto
Flowering
9 weeks
Harvest
450 – 550 gr/m2
Height
110 – 130 cm
THC
Up to 24%
CBD
< 1%
Autoflowering
Yes
Buy seeds from 13,00 €
1 fem
13,00 €
2 fem
24,00 €
3 fem
36,00 €
5 fem
55,00 €
10 fem
99,00 €
25 fem
215,00 €
50 fem
365,00 €
100 fem
590,00 €
500 fem
1 950,00 €
1000 fem
3 400,00 €
Pack
3 fem
Add to Cart
36,00 €
 

An easy-to-grow Sativa-dominant hybrid that grows with medium stature and produces thick, dense buds that pack 24% THC. One of our most potent autoflowering strains that can be harvested after 9 weeks from seed, making her an ideal choice for growers who are looking for the best results when growing outdoors all year long.

 

Top 10 strains to grow outdoors: mimosa cake auto

Mimosa Cake Auto grown by Pot Portraits.
 

Our version of this classic can yield up to 550gr/m2 and her easy to grow nature makes it perfect for beginner growers who want to experience good-quality buds with a quick turnaround time, very little maintenance, and any extra effort or special care.

 

Top 10 strains to grow outdoors: mimosa cake auto

Mimosa Cake Auto grown by Pot Portraits.
 

Her terpene profile is a combination of lemon, earthy and floral terpenes that makes Mimosa Cake Auto such a favorite for flavor chasers. It's a fast flowering and large yielding strain that has the power to keep you in dreamland, with an extremely potent high that will leave you heavy-bodied and happy as you experience her Sativa heritage with a nice head buzz. This is a perfect strain for those needing that extra boost to deal with work or chores without getting too sleepy, a great choice for active stoners.

Grow Tips

  • This strain can withstand hotter climates and will perform extremely well when grown outdoors. 
  • She enjoys large amounts of nutrients and can take a higher E.C than most autos.
  • Be careful when flowering Mimosa Cake Auto outdoors, as her aroma is very loud and pungent.

7. Purple Lemonade Auto

This is a tall hybrid that can grow up to 120cm and one of our best purple Indica-dominant genetic, resulting from a cross between purple and citrusy Cali genetics. 

Purple Lemonade Auto
Purple Lemonade Auto
Genes
Sativa 30%/Indica 70%
Genetics
Purple Lemonade
Flowering
9 – 10 weeks
Harvest
400 – 500 gr/m2
Height
70 – 120 cm
THC
Up to 22%
CBD
< 1%
Autoflowering
Yes
Buy seeds from 13,00 €
1 fem
13,00 €
2 fem
24,00 €
3 fem
36,00 €
5 fem
55,00 €
10 fem
99,00 €
25 fem
215,00 €
50 fem
365,00 €
100 fem
590,00 €
500 fem
1 950,00 €
1000 fem
3 400,00 €
Pack
3 fem
Add to Cart
36,00 €
 

A truly beautiful purple cultivar with a truly delicious and mouth-watering terpene mixture of citrus and fruity flavors, this hybrid delivers huge purplelicious yields in 10 weeks from seed to harvest.

 

Top 10 strains to grow outdoors: purple lemonade auto

Purple Lemonade from our grower BigDaddyK.
 

With 22% THC level this variety offers an uplifting effect that will leave you giggling and progressively turns into an extreme body relaxation, it is an ideal choice for relaxing at night or even during the day. It is fast flowering and very easy to grow, perfect for beginner growers as she is low maintenance and can be grown without nutrients, yet will reward you with yields of up to 500gr/m2.

 

Top 10 strains to grow outdoors: purple lemonade auto

Purple Lemonade from our grower Hawkbo.
 

This strain will leave your mouth watering, you will fall in love with the mix of sweet, sour and citrus terps that offer an uplifting and euphoric high at first, then degrading in a more physical one.

Grow Tips

  • This girl grows with long inter-nodal distance so it is a perfect choice for low stress training techniques. 
  • Nutrients are not essential for her well-being but with good quality nutrients and proper usage, it will reinforce her even more. 
  • This strain is strong and will grow vigorously, doing well both indoors and outdoors.

8. Strawberry Banana Auto

A cross between the most delicious genetics, resulting in an extremely resilient and potent autoflowering strain. Strawberry Banana Auto is one of the most potent strains we offer, she grows as tall as 150cm, clearly expressing her hybrid genetics. 

Strawberry Banana Auto
Strawberry Banana Auto
Genes
Sativa 45%/Indica 55%
Genetics
Strawberry Banana Auto
Flowering
10 – 11 weeks
Harvest
450 – 600 gr/m2
Height
110 – 150 cm
THC
Up to 27%
CBD
< 1%
Autoflowering
Yes
Buy seeds from 13,00 €
1 fem
13,00 €
2 fem
24,00 €
3 fem
36,00 €
5 fem
55,00 €
10 fem
99,00 €
25 fem
215,00 €
50 fem
365,00 €
100 fem
590,00 €
500 fem
1 950,00 €
1000 fem
3 400,00 €
Pack
3 fem
Add to Cart
36,00 €
 

This medium/tall cultivar produces huge yields, you can expect to harvest up to 600gr/min all types of weather, although in moderate climates is where you will ultimately get amazing results. 

 

Top 10 strains to grow outdoors: strawberry banana auto

Strawberry Banana Auto grown by Pot Portraits.
 

You can expect extremely thick and condensed flowers that are completely capped in resin, with bright orange hairs. Due to the extremely fat buds, we recommend providing support to the branches so your plant can withstand the weight of the buds. 

 

Top 10 strains to grow outdoors: strawberry banana auto

Strawberry Banana Auto grown by Pot Portraits.
 

The 27% THC will keep you energized, creative mindset for hours and you will feel the effect transforming into a relaxed state as time passes while the chunky buds with a terpene profile that reeks of banana and strawberry with a strong bubblegum background will leave you wanting more and more. 

Grow Tips

  • Tying plants down and using the L.S.T technique will increase yields further, as well as additional support.
  • Using bamboo canes or a screen net to help support the heavy yielding side branches will prevent buds from dropping to the floor under the excess weight.
  • Due to her aggressive trichome production, we recommend this strain to hash producers and extractors.  

9. Bruce Banner Auto

An incredibly huge and heavy-hitting strain with monstrous yields that can reach up to 600gr/m2.

This is a very tall autoflowering hybrid, excellent for those wanting to make the most out of every single seed or growers that can only have one plant per grow cycle.

Bruce Banner Auto
Bruce Banner Auto
Genes
Sativa 65%/Indica 35%
Genetics
Bruce Banner Auto
Flowering
10 – 11 weeks
Harvest
450 – 600 gr/m2
Height
110 – 150 cm
THC
Up to 25%
CBD
< 1%
Autoflowering
Yes
Buy seeds from 13,00 €
1 fem
13,00 €
2 fem
24,00 €
3 fem
36,00 €
5 fem
55,00 €
10 fem
99,00 €
25 fem
215,00 €
50 fem
365,00 €
100 fem
590,00 €
500 fem
1 950,00 €
1000 fem
3 400,00 €
Pack
3 fem
Add to Cart
36,00 €
 

She offers very impressive yields in a 10-11 week flowering time, commercial growers will find this strain to be a great choice due to the massive amounts of resin all over the buds and surrounding foliage, and the strong Indica-leaning effect.

 

Top 10 strains to grow outdoors: bruce banner auto

Bruce Banner Auto grown by BangDangBuds.
 

Her buds are long, thick, and completely drenched in frost, with fat calyxes stacking up in the traditional Hybrid fashion and thanks to 25% THC, offers a powerful relaxing effect, perfect for Indica lovers. After smoking this cultivar you will experience an Indica-like yet very balanced effect, a very focused and alert mindset that leaves you relaxed and clearheaded but deeply relaxed, perfect for beginner smokers, and ideal for after a busy day of work or to relax and chill on the weekends.

 

Top 10 strains to grow outdoors: bruce banner auto

Bruce Banner Auto grown by BangDangBuds.
 

Bruce Banner Auto provides a mouth-watering combination of terpenes with a very gassy and sweet taste, a complex combination of fruity and berrylicious tastes with a strong earthy background that smoothes out the smoke.

Grow Tips

  • Growing this strain in a SCROG setup works very well and allows you to maximize the growing space.
  • An excellent choice for growers who live in hotter climates, thanks to her Sativa heritage.
  • Hash makers and extractors will find this cultivar to be highly rewarding.

10. Zkittlez Auto

Amongst the most popular Cali strains and one of our most popular strains, with a top-notch stability and delicious candy-sweet flavors that make for the tastiest extractions and concentrates.

Zkittlez Auto
Zkittlez Auto
Genes
Sativa 40%/Indica 60%
Genetics
Zkittlez Auto
Flowering
9 – 10 weeks
Harvest
450 – 500 gr/m2
Height
70 – 100 cm
THC
Up to 23%
CBD
< 1%
Autoflowering
Yes
Buy seeds from 13,00 €
1 fem
13,00 €
2 fem
24,00 €
3 fem
36,00 €
5 fem
55,00 €
10 fem
99,00 €
25 fem
215,00 €
50 fem
365,00 €
100 fem
590,00 €
500 fem
1 950,00 €
1000 fem
3 400,00 €
Pack
3 fem
Add to Cart
36,00 €
 

This hybrid will fill the room with its overpowering aroma and fill your tent with several side branches covered in extremely resinous and pungent fat buds. You can expect this cultivar to grow up to 100cm and yield a lot, thanks to her Indica and Sativa heritage, you'll see the main cola and all the branches develop bushy foliage while being completely covered in extremely frosty and dense buds.

 

Zkittles Auto by our grower Hawkbo.
 

Her terpenes profile is a mix of tropical fruits and ripe berries with candy overtones and it will make you feel like your sipping on a fruit cocktail after every puff, while leaving you buzzed, upbeat, giggly, and in a happy state of mind, a perfect effect for social scenarios.

Grow Tips

  • A tough and resilient hybrid that will perform very well in all weather. 
  • Use a screen or net to support the huge buds when flowering begins. 
  • Feed only water for the final two weeks to ensure the ultimate Zkittlez Auto taste.

11. Original Auto Northern Lights

Knock out potency and big yields in an easy-to-grow autoflowering cultivar, an exceptional variety for Indica lovers and old-school growers looking for those unique classic flavors in autoflowering version.

Northern Lights Auto
Northern Lights Auto
Genes
Sativa 30%/Indica 70%
Genetics
Northern Light Autoflowering
Flowering
9 weeks
Harvest
500 – 600 gr/m2
Height
90 – 120 cm
THC
Up to 20%
CBD
< 1%
Autoflowering
Yes
Buy seeds from 9,00 €
1 fem
6,30 €
2 fem
11,20 €
3 fem
16,80 €
5 fem
28,00 €
10 fem
49,00 €
25 fem
105,00 €
50 fem
175,00 €
100 fem
294,00 €
500 fem
1 015,00 €
1000 fem
1 680,00 €
Pack
3 fem
Add to Cart
16,80 €
 

Original Auto Northern Lights is an old-school Indica-dominant gem that grows up to 120cm and will produce dense, golf ball-sized nugs in only 63 days. This classic variety will display her Indica dominance by growing short internodal spacing and growing to a medium height while being able to produce up to 600gr/m2

 

Original Auto Northern Lights from our grower PharmaZ.
 

Original Auto Northern Lights is ideal for beginners, she can withstand cold and wet climates and doesn't need much maintenance to produce top-shelf buds, possibly being the best outdoor strain in this list due to its resiliency.

 

Original Auto Northern Lights from our grower PharmaZ from GrowDiaries
 

This hard-bodied Indica provides an extremely relaxing and potent couch-lock effect that will make your face feel like it's melting, perfect after a long day of work. The potent high comes with bold mouth-watering terpenes with an overall spicy and peppery flavor with mild fruity undertones.

 

Video of Northern Lights Auto grown by our grower BigDaddyK.
 

In this video, you can see the multiple branches this strain develops, which are filled with frosty dense buds thanks to its Indica heritage.

Grow Tips

  • An excellent strain for Sea of Green setups, due to her uniform growth structure.
  • Well recommended for growers who live in colder, rainy climates.
  • Highly resistant to insects, pathogens, and mold.

12. In Conclusion

There are a lot of autoflowering varieties that can be grown extremely well outdoors, autos are super resilient to cold, hot climates and bugs and mold, the strains mentioned above are our top 10 that will surely leave you pleased and amazed at the quality and amount of buds. Just remember that, as said in the introduction, it's highly recommended to plan ahead so your plants get the most amount of direct sunlight possible. You can have a very good harvest all year long but planning ahead so your plants get more sunlight will result in bigger and denser buds, with an increased trichome production; The trichomes are where the terpenes and cannabinoids are produced and store so you will not only get better yields but you will also get a more potent, tastier and better smelling final product without doing anything extra, just planning so it's definitely recommended.

Always make sure to check online for the weather during the next couple of months, this will allow you to know what to expect and what to prepare for; Maybe you need a small greenhouse or maybe you need a plastic sheet to cover your plants when it rains, anything goes to protect your precious babies. Knowing the expected weather will not only give you an advantage but also avoid future problems so make sure you check everything before starting your next cycle outdoors and get growing!

If you grow your autos outdoor and have grown one of our auto strains before, please leave a comment below!

 

This post was most recently updated on April 21, 2021.

External References

1. GML - Earth System Research Laboratories - https://www.esrl.noaa.gov/gmd/grad/solcalc/

28 April 2021
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