Fast & Vast Auto feminized seeds

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Auto Fast & Vast is an autoflowering cannabis strain made from crossing Afghani x Skunk x White Dwarf that delivers high potency as well as high yields. The smoke is soft and sweet with spicy flavor. The effect hits hard.

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Heavyweight Seeds
Outdoor Indoor
20% Sativa / 80% Indica
THC 17 - 19 % CBD 0.8 %
All characteristics

Fast & Vast Auto - High Yielding Indica

Fast & Vast Auto by Heavyweight Seeds is one of the best feminized autoflowering plants out there, created by crossing Afghani and a skunk plant with White Dwarf. The result was a plant of extremely potent autoflowering nature that provides maximum yields for growers.

Fast & Vast Auto by Heavyweight Seeds can be grown both indoors and outdoors. In a stable indoor garden, she grows around 1-1.2m tall. It tends to grow a large main stem with a few side branches and it takes just 8 weeks to finish growing fully after germination. Outdoors is where this plant can really show its true potential, growing with a sort of Christmas tree structure around 1.5m tall. Outdoors, with minimal care you can harvest an incredible 75-200g/plant.

  • Harvest time: Approximately 8 weeks
  • THC: 17-19%
  • Height: 100cm-120cm
  • Indoor yield: 600-800g/m2, outdoor yield: 75-200g/plant

Therapeutic And Fruity Skunk

Fast & Vast Auto has an exotic, sweet flavor like any good Skunk strain, although with an earthy Afghan hint. Its effect is relaxing and physically therapeutic. The smoke is soft and sweet with spicy notes; the effect hits hard and fast with a knockout punch that evolves into a long, relaxing stoned effect.


  • Brand Heavyweight Seeds
  • Sex Feminized
  • Flowering type Autoflowering
  • Suitable for Outdoor
  • Suitable for Indoor
  • Effect Mild and relaxing journey
  • Genetics Afghani x Skunk x White Dwarf
  • Height 100 - 120 cm
  • Yield 600 - 800 g/m² indoors
    75 - 200 g/plant outdoors
  • From seed to harvest 56 days
  • Genotype 20% Sativa / 80% Indica
  • THC 17 - 19 %
  • CBD 0.8 %
    • Advantages
      Absolutely a thick big Ole bud maker, quick, impressive colors, mostly green and lime, some purples and red in the end of flower, very relaxing
    • Disadvantages
      Smell is weak, has no effect on quality, just not a nose buster, very good smell but very weak presence. Slightly airy nugs but it might be over powered lighting on my part.
    • General impressions
      Extreme relaxation, not a tired relaxed, but a mostly calming and chilled out afternoon high. over a 1/4lb off a 24" tall plant, 86 day harvest, extremely relaxing high, not quite couch lock but more of a playful, no stress, no anxiety, no paranoia. Heavy munchies and good chance you'll lose track of time with this one.
    Photos from customers
    • Advantages
      I really enjoyed growing this awesome strain! The buds are so beautiful. Made me happy, relaxed and uplifted.
    • Disadvantages
    • General impressions
      A Wow strain! 😮 A pure pleasure to grow.
    • Advantages
      Dense buds
    • Disadvantages
      Can cause dry mouth
    • General impressions
      It was a small plant at the beginning but then it turned in to a magic tree. A must have strain.
    • Advantages
      Top quality seeds
    • Disadvantages
    • General impressions
      Another great strain from Heavyweight, find this one very skunky though, very smelly even when grown fully organic. But as with all other Heavyweight strains yet to grow one in 56 days. The average I get is 70 days, but the quality and yield is like no other. I am a massive fan of Heavyweight seeds, not for the speed but for their yields, they are without a doubt the highest yields yet from an Auto, and again I find this strain a lot stronger than 18% THC content, this one is definitely well over 20%. My advice is expect to grow them for 70 to 77 days and you will have a great yield with the best quality. This variety is fast and vast for what you get but not in 56 days. But for me quality is more important and heavyweight definitely has that.
    • Advantages
      Easy to Grow, good yield, resistant to abuse ;

      Did these under 600watt HPS in tent using Biobizz soil / nutes. Watch for Mg shortage around week 4 / 5 otherwise spot on. Harvested 77 days from seed and got just under 3oz per plant.
    • Disadvantages
    • General impressions
      Easy to grow, never trained them, just let them do their thing. Nice bit of smoke. Good for stress / sleep and pretty knockout stone, depending how long you let her go.
    5 February 2020

    Hello Barry!

    Thank you  for your review.

    Could you please clarify, what was the disadvantages of this strains that leads you to give it 4 stars?

    Respectfully, Herbies Seeds
    • Advantages
      Not known yet
    • Disadvantages
      Still germinateing ...... or trying. I think its a dud since its been 7 months.
    • General impressions
      I was looking for a simple cash crop when i purchased these seeds in April.

      With my purchase i received 3 Victory Red Russian XXL which are vegetating great!!!!!!

      I will try Heavyweight Seeds again, but this time i was unlucky.
    27 December 2019

    Hello! Thank you for the review.

    We regret to hear that you have faced this issue. We have a claim form for these rare cases of bad germination rate. Please, fill it up and we will proceed with your claim. Kindly remind you that more detailed information increases chances for compensation.


    Although seedbanks guarantee maximum germination, meaning that at least 70% of the seeds in a pack will germinate, seeds remains live biological material. Their germination rate might be affected by a wide range of external factors, such as unsuitable temperature, overwatering or insufficient watering, inconvenient soil content, parasites, fungus and mold, transplants, foliage trimming and many others. We have an article about germination, where you can find the most recommenced and the most popular method of germination.

    We hope that you’ll find this information useful!

    Respectfully, Herbies Seeds
    • Advantages
      Massive auto strain
    • Disadvantages
      Didn’t notice any
    • General impressions
      Grew very big with tight buds and a very sweet smell. I will definitely grow this strain again. Many thanks to Herbies