Extreme Impact Auto feminized seeds

26.5 €
(price of the selected package)
Choose pack size:
Herbies accept credit cards

Extreme Impact Auto by Heavyweight Seeds was created by crossing Mazar Auto and Fast & Vast Auto to produce a strong and bushy autoflowering cannabis strain. Its spicy, lemony aroma enveloped in dense white smoke will make you feel relaxed and give you the clarity you need. Extreme Impact Auto is highly recommended for evening use, as after the smoking session is over, you’ll fall asleep especially quickly.

Read more
Heavyweight Seeds
Outdoor Indoor Greenhouse
10% Sativa / 90% Indica
THC 21 % CBD 0.6 %
All characteristics

Melt Into The Relaxing Effects Of The Dense Smoke

With a THC level of 21% and CBD of 0.6%, the Indica-dominant Extreme Impact Auto provides intense effects that direct waves of a magical relaxing sensation to every part of your body. Meanwhile, your mind gains clarity and fills with curious ideas and thoughts that you’ve never really had before. Extreme Impact Auto is highly recommended for use in the evening, when you can dedicate enough time to yourself and not be distracted by the outside world.

Extreme Impact Auto: Hashy Taste And Aromas With A Twist

Extreme Impact Auto has an aroma and taste with a unique personality; it’s powerful and will certainly excite you. This autoflowering weed variety’s spicy aroma becomes even more pronounced in its sweet, dense smoke. The taste consists of the solid base of traditional hashish and additional zesty notes of lime and lemon that put an exciting twist on the classic taste, making it fresh and playful. 

For Those Who Want To Grow An Uncomplicated Indica

Extreme Impact Auto has a strong, short, bushy structure with sturdy branches that can adapt pretty well to almost any environment or climate. It’s very easy to grow, which makes it a perfect choice for both amateur and professional growers. Besides that, Extreme Impact Auto has enormous yields that can outperform even a standard photoperiod strain. This weed variety will thrive in any grow medium, producing resin-laden buds whether grown indoors, in a greenhouse, or outdoors in the open sun.

  • This strain has a short lifecycle of just 8 weeks – plant early to harvest twice in one season!
  • Its maximum height of 80cm (2’7”) is perfect for stealthy/guerilla growers and those with limited grow space.
  • Expect yields of up to 650g/m2 (2.1oz/ft2) indoors and 150g (5.3oz) per plant outdoors.
  • Incorporate LST techniques to achieve the largest possible yields.

Unbeatable Genetics Of Extreme Impact Auto

Extreme Impact Auto is an Indica-dominant autoflowering hybrid by Heavyweight Seeds that was produced from a cross between two different strains, Mazar Auto and Fast & Vast Auto. These two autoflowering cannabis strains were combined to create an auto variety that can outperform many photoperiod strains both in terms of potency and yield.


  • Brand Heavyweight Seeds
  • Sex Feminized
  • Flowering type Autoflowering
  • Suitable for Outdoor
  • Suitable for Indoor
  • Suitable for Greenhouse
  • Effect Crushing blow
  • Genetics Mazar Auto x Fast&Vast Auto
  • Height 70 - 80 cm
  • Yield 650 g/m² indoors
    50 - 150 g/plant outdoors
  • From seed to harvest 56 days
  • Genotype 10% Sativa / 90% Indica
  • THC 21 %
  • CBD 0.6 %
    • Advantages
      It’s flowering rapidly with thick fat buds. 3 hits in the morning and you forget your own mama! I’ve been smoking it for a month after the harvest and so far no signs of growing tolerance! It hits as hard!
    • Disadvantages
      I can’t really say anything about this. There are certain manageable moments like an increased need for microelements when the plant is flowering. And the smell is obnoxious!
    • General impressions
      When it comes to trying what you harvested, this strain is clearly not for beginners! 
      75-80 days of flowering, 56 cm in height, and I got 60 grams of dry buds from it. The bush is 50 days old on the photo
    • Advantages
      Fast-growing strain!! Amazing growth, excellent strain!!! Smells great!!!
    • Disadvantages
      Didn’t notice any
    • General impressions
      Grown indoor with amazing results. Fast to flower, great bud density, overwhelming smell, and some of the most resinous buds I have ever grown. Truly extreme in almost every way.
    • Advantages
      3/3 germinated, i’m happy with everything so far, my thanks to the seed bank
    • Disadvantages
    • General impressions
      Feeling very hopeful!
    • Advantages
      Grows quickly, 34 days from seed and I can already see it’s starting to form flowers! No smell so far
    • Disadvantages
    • General impressions
      Hardy strain
    • Advantages
      All three seeds germinated quickly in a glass of water. No hormones or anything, just a little hydrogen peroxide
    • Disadvantages
      None so far
    • General impressions
      Will see after the harvest!