Top 10 Strongest Autoflowering Strains 2021

If you are in search of the strongest strains look no further as we present the top 10 autoflowering cultivars in 2021.
21 April 2021
17 min read
Top 10 Strongest Autoflowering Strains 2021

In a market place so heavily dominated by numbers and statistics, many people are in search of the most potent Cannabis the planet has to offer, especially if you smoke a lot.

If you're an avid cannabis consumer it's most likely you want to grow the most potent genetics available, knowing which strains to cultivate is not always straightforward, so we have created a shortlist of the 10 strongest autoflowering strains on the market created for those with the highest tolerance!

 

Learn from Sebastian Good all about the most potent auto strains you can find.
 

All of these strains offer unique powerful effects that may be more cerebral, corporal, or a mix of both but in all cases will be extremely potent for those who want a long-lasting effect that takes you to the moon and leaves you there.

1. Gorilla Cookies Auto - 27% THC

Gorilla Cookies produces extremely dense and potent buds, it develops several side branches that end up completely enveloped in silver-coated chunky buds. She grows bushy and stout, reaching up to 100cm and producing around 600gr/m2  in around 10 weeks.

Gorilla Cookies Auto
Gorilla Cookies Auto
Genes
Sativa 45%/Indica 55%
Genetics
Gorilla Cookies Auto
Flowering
10 weeks
Harvest
500 – 600 gr/m2
Height
90 – 100 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 €
 

The beautiful buds with dark and light shades of green, pack a punch with 27% THC and a delicious elaborate blend of earthy kush flavors with minty and citrusy undertones that result in a very delightful cerebral effect which slowly transforms into a potent body high that will leave you relaxed anywhere, perfect for clearing your mind after a hard day of work.

Grow Tips

  • Make sure you control and adjust the ph levels so you don't affect plant growth.
  • Due to the extremely dense buds, it's advised you provide support to the branches.
  • We recommend gradually increasing the nutrient dose starting on week 3 as she can take a big feed.

2. Strawberry Pie Auto - 26% THC

Thanks to its Indica heritage, Strawberry Pie Auto grows very symmetrically branching with large and thick fan leaves that will be completely covered in trichomes near its life cycle and can grow up to 100cm while yielding around 550gr/m2.

Strawberry Pie Auto
Strawberry Pie Auto
Genes
Sativa 15%/Indica 85%
Genetics
Strawberry Pie Auto
Flowering
8 – 9 weeks
Harvest
400 – 500 gr/m2
Height
60 – 100 cm
THC
Up to 26%
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 €
 

This one is amongst the strongest Indica strains and produces super-chunky and charming buds with purple, yellow, and pink hues that make her an extremely attractive cultivar. You can expect this cultivar to smell like a skunky strawberry candy with a complex mixture of berry, cookie dough, and creamy flavors that will relax your body while leaving you centered and with a feeling of well-being without being extremely relaxing.

Grow Tips

  • We recommend a little bit of LST due to her compact structure.
  • Be sure to flush during the last 2-3 weeks to really make her colors and flavors stand out.
  • She prefers light feeding and you should control the pH level so you don'ts risk stunting growth.

3. Gelato Auto - 26% THC

Gelato Auto is the perfect blend of Indica and Sativa lineage, making it one of the best feminized autoflower seeds, so you can expect this lady to display ultimate hybrid vigor, rewarding growers with huge yields with extreme potency. This lady is also one of our fastest flowering strains meaning Gelato Auto can be harvested as quickly as 9 weeks from seed to harvest. 

Not only is she a commercial grower's dream, but she's perfectly suited for beginner growers thanks to her easiness to grow and low maintenance. A truly majestic plant that when flowering will display a multitude of colors ranging from vibrant greens to golden orange, and totally covered in trichomes.

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 €
 

The flavor is a combination of sweet cookies, citrus, and earthy-sweet resembling ice cream. The effects can be devastatingly potent leaving you firmly locked to the couch, with enough of a cerebral edge to keep you in a creative mindset.

A Cali strain bred to perfection and now in auto version for those who love potent effects and unique terpene profiles, a must-try for all cannabis consumers.

Grow Tips 

  • Due to her extremely loud terpene profile, it is well recommended to use carbon filters up to the job. Especially when drying the buds, the aroma can become seriously overwhelming. 
  • Defoliating certain Indica shaped fan leaves will help light penetrate into the canopy. This will allow the lowest parts of the plant to grow large-sized buds. 
  • Get those trim bags or sifting screens ready, as she is unbelievably resinous. A wise choice for the connoisseur hash maker or extract artist.

4. Wedding Glue Auto - 26% THC

An Indica-dominant strain that grows several thick side branches, completely covered in resin and with a life cycle of 63-70 days from seed to harvest. Growers can expect a resistant plant with a tall structure that can finish at 120cm in height.

Wedding Glue Auto
Wedding Glue Auto
Genes
Sativa 40%/Indica 60%
Genetics
Wedding Glue Auto
Flowering
9 – 10 weeks
Harvest
450 – 550 gr/m2
Height
70 – 120 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 €
 

A combination of two truly excellent genetics that will leave your mouth watering due to the delicious terpene profile which is a blend of fruity flavors mixed with strong vanilla hints, making this strain ideal for those who enjoy a motivating and focused head buzz that slowly turns into a more deep corporal effect that calms muscle pain and promotes a peaceful state of mind.

Grow Tips

  • It is advised to stake the side branches early on, to help this strain support the heavy side branches.  
  • Better suited for more experienced growers as she can get very tall in no time.
  • A massive yielding cultivar that performs superbly in a SCROG.

5. Purple Punch Auto - 24% THC

One of the most popular strains up to date, Purple Punch offers huge yields and a super tall plant; This strain can grow up to 150cm, yielding up to 600gr/m2 divided into one thick main cola and multiple shot side branches. The buds display beautiful shades of green and purple, with bright-orange hairs, and a thick layer of rosing that makes them shine from afar.

Purple Punch Auto
Purple Punch Auto
Genes
Sativa 15%/Indica 85%
Genetics
Purple Punch Auto
Flowering
9 weeks
Harvest
450 – 600 gr/m2
Height
90 – 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 €
 

You can expect a powerful effect that will relax your entire body and feel like it’s melting your muscles but won’t leave you couch-locked thanks to its Sativa side which provides a pleasant head buzz that leaves you motivated and active while you enjoy the delicious sweet blueberry and freshly-baked muffin taste after every puff.

Grow Tips

  • Being one of our larger producers, we recommend supporting all the branches.
  • It's a really sturdy strain that reacts perfectly to LST.
  • Purple Punch Auto tends to take a lot of nutrients so make sure you keep her well fed.

6. Mimosa Cake Auto - 26% THC

A cross between two terpene powerhouses due to the delicious fruity cocktail-like taste combined with a lemony background and a strong earthy touch as you exhale. This unique blend comes hand-in-hand with a perfectly balanced Sativa-leaning high; You’ll feel a nice body high that leaves you focused and, the more you smoke, the more you’ll feel the Sativa effect which hits strongly and will leave you motivated and talking a lot.

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 €
 

This auto grows on the taller side, reaching up to 130cm and yielding up to 550gr/m2 so it’s great for those who want genetics that delivers in every aspect, making it a must not only for the bud production and quality of the buds but also for the resistant and easiness to grow.

Grow Tips

  • It is advised to train the plants using L.S.T to encourage more flowering sites. She is already a big producer and training will only increase yields further. 
  • This lady can take a big feed and is known for using up more Magnesium than other cultivars. Providing your plants with organic compost or a magnesium supplement will keep the health in perfect order.
  • Due to the height and growth structure, it is advised to have enough space to allow your plant to grow properly and reach its full potential. 

7. Orange Sherbert Auto - 24% THC

A sativa dominant strain with massive yielding capabilities, that boasts at THC level of 24%. Despite her Sativa influence, from seed until harvest can take as little as 63-70 days, making this potent powerhouse an excellent choice for anyone looking for monster yields of super sour, orange sherbert terps.

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 €
 

One of our taller autos that can grow as tall as 150cm with a bushy appearance, and when flowering will produce fat, swollen calyx that stacks up with a hard density. Her flavor is superb and can be described as orange candy, sour sherbert, fizzy citrus with hints of a bold orange overtone. The effects are powerfully uplifting, exhilarating, and will bring out your creative and well-motivated side.

Grow Tips

  • It is a good idea to tie the side branches down and really expand the growth structure. This will increase potential yields even further.
  • Be warned she is a heavy producer, so she will need some support to stop those weighted down buds from toppling over.  
  • Another intense producer of trichomes so do not waste the sugar trim and be prepared to make some amazing hash and extracts.

8. Gorilla Glue Auto - 24% THC

Gorilla Glue doesn't require much maintenance while delivering up to 600gr/mof extremely chunky buds in less than 9 weeks, you will clearly see her Indica dominance on her structure and fat side branches all around.

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 €
 

The buds are insanely frosty, giving this strain it's the world-famous name, you will fall in love with the dark green pointy calyxes covered in bright orange hairs. She is super potent so we recommend it for Indica fans or smokers with a high-tolerance, the effect will have you glued to the sofa for hours and leave your face like it's melting, a really strong high that comes hand-in-hand with a delicious and very refined citrusy pine taste with a mixture of gas and lemon terpenes, a must-have for kush fans.

Grow Tips

  • She likes a big feed starting on week 3 so make sure you give her good-quality nutrients.
  • She can easily develop purple hues if you grow her in lower nighttime temperatures.
  • Gorilla Glue reacts very well to defoliation, but don't overdo it.

9. Zkittlez Auto - 23% THC

One of our most popular strains to date, Zkittlez is a perfect compact strain that grows up to 100cm. You can expect up to 500gr/mof flowers spread throughout one large main cola and several bud sites.

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 €
 

The buds display shades of green and orange and blue hues, and almost neon orange pistils. The effect is extremely long-lasting, you can expect a 3hr-long high which will start as a pleasant head-high and gradually transform into a relaxing body stone while you experience the fruity and sweet berry flavors with chocolate-like earthy undertones, being the best autoflower for hash for lots of growers.

Grow Tips

  • Being one of our larger producers, we recommend supporting all the branches.
  • It's a really sturdy strain that reacts perfectly to LST.
  • Zkittlez Auto tends to take a lot of nutrients so make sure you keep her well fed.

10. Wedding Cheesecake Auto - 22% THC

By crossing together Wedding Cake and Cheese, the result could only be a terpene-rich, knockout strain that will keep you zoned out for hours. Not only does Wedding Cheesecake produce some of the most complex terps you have ever encountered, but she is a massive yielder making her a must-have for true connoisseurs.

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 €
 

Thanks to her Indica and Sativa lineage, Wedding Cheesecake can grow as tall as 130cm, it's a fast blooming cultivar who only requires 8-9 weeks before harvesting. A very easy to grow strain perfect for beginner growers and commercial growers in search of world-class genetics. An excellent strain for those who suffer from harsh climates and short summers. The flavor is a bold earthy, vanilla dough that has hints of an orange cheesecake tart. The effects are deeply relaxing and upbeat without being too physically heavy.

Grow Tips

  • It is easy to harvest this strain multiple times a year, thanks to the rapid harvest date. 
  • Growers living in parts of the world with shorter summers can enjoy a bountiful harvest without losing plants late due to mold and mildew.
  • Even though she works incredibly well in a Sea of Green, we recommend growing her out in a 10-12 liter pot for the plants as tall as 130cm.

11. In Conclusion

If it is a couch locking Indica that will leave you on your knees begging for more, or you want a super Sativa high, our selection of Top 10 strongest autoflowering strains will definitely keep you busy this year.

THC and CBD1 aren't the only compounds that determine the effect, Cannabis can have a variety of terpenes2 which work along the cannabinoids to provide different types of highs.

Based on our selection of 10 strongest autoflowers now you should be definitely ready to decide on which one suits your needs this year.

 

StrainsTHC PercentageCBDFrom Seed to Harvest 
Gorilla Cookies Auto27Very Low 10 weeks
Strawberry Pie Auto26Very Low8-9 weeks
Gelato Auto26Low9 weeks
Wedding Glue Auto26Very Low9-10 weeks
Purple Punch Auto24Very Low9 weeks
Mimosa Cake Auto24Very Low9 weeks
Orange Sherbet Auto24Very Low9-10 weeks
Gorilla Glue Auto24Low9-10 weeks
Zkittlez Auto23Very Low9-10 weeks
Wedding Cheesecake Auto22Very Low8-9 weeks

 

Remember that Cannabis plants produce trichomes that contain terpenes, cannabinoids, and flavonoids that work like aromatherapy and result in Indica, Sativa-like effects, or a mix of both of them. Even though the cannabinoids are important, it is not all that matters. So if you're looking for a specific effect, either medicinal or recreational, it's a good idea to look for that specific terpene mix instead of looking for THC or CBD-rich strains.

Good luck working your way through this list of the strongest strains in 2021. 

 

This post was most recently updated on April 20, 2021.

External References:

  1. What's the point of CBD? - Hamzelou, Jessica. (2019).
  2. Terpenes/Terpenoids in Cannabis: Are They Important? - Hanuš, Lumír & Hod, Yotam. (2020).
21 April 2021
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