Growing Marijuana

Top 5 High THC Autoflower Seeds

Top 5 Highest THC Autoflowering Seeds 2021

If you’re looking for the 5 Highest THC Autoflowering Seeds which are potent and powerful, fast and easy-to-grow Marijuana seeds, these are the strains for you. Our top 5 highest THC Autoflowering seeds 2021. A collection of our strongest strains, all completely feminized and guaranteed to produce the most vibrant female plants.


  1. Gorilla Glue Autoflowering.

  2. Banana Kush Autoflowering.

  3. Bruce Banner Autoflowering.

  4. Zkittlez Autoflowering.

  5. Blue Dream Autoflowering.

There are many advantages with growing Autoflowering Marijuana seeds; The speed and ease at which they grow is one of their major selling points. Unlike traditional Feminized Marijuana seeds, they require no set hours of darkness to completely flower and mature. Controlled by age, rather than the number of hours of darkness they receive, they can be successfully cultivated under any number of light-hours.

Autoflowering seeds can be successfully cultivated indoors. However, they are the perfect choice for the outdoor grower. With no requirement for long hours of uninterrupted darkness to promote flowering, they can be planted, matured and harvested over the Summer months.

A perfect choice for all, from new and novice growers, through to ‘guerrilla’ and ‘cash-crop’ commercial producers. With very little knowledge, previous experience or effort, even a complete beginner can produce their own successful crop using Autoflowering Marijuana seeds.

We have compiled a list of our top 5 Highest THC Autoflowering seeds for the 2021 season. The freshest seeds, the highest quality genetics. Learn more about our most popular Autoflowering strains and buy Marijuana seeds from one of the best seed banks online.

Top 5 Highest THC Autoflowering Seeds.

Gorilla Glue Autoflowering Seeds

Gorilla Glue

Gorilla Glue Autoflower Seeds

A complex strain, Gorilla Glue Autoflower seeds are comprised of three different varieties blended together; Sour Dubb, Chem’s Sister and Chocolate Diesel.

Gorilla Glue Autoflower Seeds.

Gorilla Glue Autoflowering seeds are our most potent Autoflowering seeds. With THC levels of up to 28%, they induce a fast-acting, powerful high. A combination of Sour Dubb, Chem’s Sister and Chocolate Diesel, the buds are hard and dense, almost dripping with thick, sticky resin.

A squat, dense plant with a 70% Indica dominance. It requires just 56 days from sprouting to fully ripen and mature. Given good growing conditions and plenty of direct sunlight, individual plants can produce up to 160 grams of dried buds.

The flavor-filled buds produce an earthy, pine aroma, filling the room with its thick, rich smoke. The effects are fast-acting, quickly inducing a happy, relaxed sensation. Not a strain for light-users, it can induce ‘couch-lock’ and a deeply relaxed state.

Banana Kush Autoflowering Seeds

Banana Kush

Banana Kush Autoflower Seeds

Banana Kush Autoflower seeds are a 60% Indica dominant strain, first bred and created in California, A mix between Ghost OG and Skunk Haze strains.

Banana Kush Autoflower Seeds.

Banana Kush Autoflower seeds are very popular with outdoor growers across the USA. An easy-to-grow Marijuana strain with a 60% Indica dominance. Created from a Ghost OG and Skunk Haze, the buds have an intense, topical fruit flavor and banana aroma.

Completely feminized, these Autoflowering seeds are ready to harvest 8 weeks from sprouting. The squat, dense plants are perfect for outdoor growers, producing a multitude of large, dense buds. Expect average harvests of between 4 – 6 oz per-plant, given good conditions and long hours of sunlight.

An uplifting smoke, it has a THC level of approximately 24%. Fast-acting, it produces a happy, euphoric sensation, perfect for socializing with friends, or relaxing with. A real West-Coast favorite combining both sedative Indica and creative Sativa effects.

Bruce Banner Autoflowering Seeds

Bruce Banner

Bruce Banner Autoflower Seeds

Enjoy an energizing, euphoric high, that’s fast-acting and hard-hitting, leaving you feeling alert, creative and positive with these Bruce Banner Autoflower seeds.

Bruce Banner Autoflower Seeds.

A powerful 60% Sativa dominant strain, Bruce Banner Autoflowering seeds have a THC content of up to 25%. Named after the meek, mild scientist, it quickly produces  potent, dank buds. A popular and highly awarded strain, loved for its relaxing, euphoric sensations.

The plants are small, growing to around 1 meter tall when completely mature. Easy to disguise and conceal, expect average harvests of between 120 – 160 grams of dried buds per plants, with good growing conditions and techniques.

A cross between a high-quality Original OG Kush and Strawberry Diesel, it retains all the flavor and aroma of its parents with a combination of fruity-diesel smells and tastes. An extremely popular day-time smoke, easy to grow and ready to harvest 8 weeks from sprouting.

Zkittles Autoflowering Seeds


Zkittlez Autoflower Seeds

Zkittlez Autoflower seeds produce dense, fruity buds with a powerful 23% THC content inducing a relaxing high.

Zkittlez Autoflower Seeds.

Our fourth Highest THC Autoflowering seeds are Zkittlez. A highly-popular strain with a mouth-watering assortment of fruity flavors. If you’re looking for buds that ooze ‘bag-appeal’ Zkittlez has it all. An easy-to-grow 70% Indica dominant Autoflowering strain, ready to harvest just 8 weeks from sprouting.

Created from Grape Ape and Grapefruit, Zkittlez has a THC content of approximately 23%. The effects are a combination of uplifting euphoria and peaceful, relaxed contentment. Depending on your mood and usage, it can invigorate the body or relax the mind.

A short, squat plant, perfect for Sea-of-Green growing techniques. Harvests are similar to other high-quality Autoflowering seeds, producing between 4 – 6 oz of potent, premium buds per-plant over the Summer season. Perfect for new and lesser-experienced growers.

Blue Dream Autoflowering Seeds

Blue Dream

Blue Dream Autoflower Seeds

Blue Dream is a popular West Coast Marijuana strain with a relaxing, but energizing high, perfect for daytime use. Now available in Autoflowering form, you can grow your own Blue Dream Marijuana in just 56 days.

Blue Dream Autoflower Seeds.

Created from a combination of Blueberry and Super Silver Haze, Blue Dream Autoflowering seeds are an 80% Sativa dominant strain that’s perfect for day-time use. Easy to grow and extremely popular in California, it induces a creative, stimulating euphoria leaving you feeling uplifted and focused.

A small plant, it can be successfully cultivated indoors or outside, producing its biggest and best quality harvests when exposed to long hours of daily sunlight. The combined growth and flowering stages reduces harvest times to between 8 – 10 weeks from sprouting, with average 4 – 6 oz per-plant yields.

A visually stunning and deeply aromatic strain, it has a sweet-berry, herbal aroma, with a slightly earthy note to its flavor. THC levels of 21% and a CBD content of up to 2%  make it the perfect strain for both recreational and medicinal use, inducing a relaxed ‘West-Coast’ vibe.

Buy Top 5 Highest THC Autoflowering Seeds Online.

These 5 Highest THC Autoflowering seeds are just a selection of the strains currently available. We offer a wide and varied assortment of Feminized seeds and Autoflowering Marijuana strains for sale.

All our recommended seeds are of the highest quality. Fresh and hand-selected, every seed is guaranteed to germinate, producing a pure-female Autoflowering plant.

Find soaring Sativa’s and ‘couch-locking’ Indica’s, all easy to grow and perfect for cultivating outdoors this coming season. Plant now and enjoy smoking your own potent, high-quality weed in the Summer sun this year. With restrictions easing, what could be better?

All our recommended Autoflowering seeds for sale are dispatched directly by I Love Growing Marijuana. Now based in California, they have long-been, world-class leaders in the production and supply of high-quality Cannabis and Marijuana seeds.

Receive all the help and support you may require when you buy Marijuana seeds online.Their first-class customer-care service will quickly answer any questions or concerns you may have regarding your purchase.

Buy High THC Autoflowering Seeds Online

How To Grow Marijuana.

For more help and advice on producing a successful harvest from your seeds, download the Marijuana Grow Guide. Packed full of information, it quickly and accurately details all aspects of how to grow Marijuana.

Written by Robert Bergman, owner and founder of I Love Growing Marijuana, it has become the most downloaded growing guide available online.

It’s totally FREE!  No cost, no obligation!

Whether you chose to buy from our list of the 5 highest THC Autoflowering seeds or not. Download your copy of the Marijuana Grow Guide today.

Save Money With Mix Pack Marijuana Seeds.

You can save $$$ when you buy from our wide, varied selection of Mixed Pack Marijuana seeds. Each packet contains three, individually packaged strains. Select from the 5 or 10 seed option, giving you 15 or 30 seeds in total.

Choose from an assortment of Feminized or Autoflowering packs, all with complimentary, underlying traits and characteristics. New to growing? Try our Just Starting Out selection. Or for the more commercially minded, the Cash Crop variety.

With a choice to suit all tastes. Feminized, Autoflowering, Recreational and Medicinal Mix Packs all available.

Find out more about our Mixed Pack Marijuana seeds.