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Autoflower Seeds

Want to grow weed fast? Autoflowers contain the Cannabis Ruderalis genetics which cause them flower based on age rather than light cycle. Our selection of autoflowering seeds can grow from seed to harvest in as little as 8 weeks and reach average heights of 100cm, making them perfect for indoor grows.

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  3. Godfather OG Autoflower - Auto Seeds
    Godfather OG Autoflower - Auto Seeds By Auto Seeds
    From: Now US$24.89 Was US$35.56
    • THC: Over 25%
    • Yield: 400-500gr/m²
    • Flowering Time: 10-12 Weeks
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    30% OFF
  8. Pink Runtz Auto Seeds
    Pink Runtz Auto - Auto Seeds By Auto Seeds
    From: Now US$23.12 Was US$33.02
    • THC: 18%-20%
    • Yield: 550-650gr/m²
    • Flowering Time: 6-8 Weeks
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    30% OFF
  20. Sweet CBD Auto Seeds
    Sweet CBD Auto - Auto Seeds By Auto Seeds
    From: Now US$24.89 Was US$35.56
    • THC: Less than 10%
    • Yield: 400-500gr/m²
    • Flowering Time: 6-8 Weeks
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    30% OFF
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What are autoflower seeds?

Autoflowering seeds are a type of cannabis seed that automatically switch from the vegetative stage to the flowering stage with age, rather than by light schedule adjustments. Autoflowers genetics can be traced back to Cannabis ruderalis, a species of plant that originally grew in Siberia, Russia and Eastern Europe. The Ruderalis species is known for its hardiness and ability to flower automatically.

Noticing the potential from a strain that flowers based on age, cannabis breeders in the late 90’s combined these traits with the more potent cannabis sativa and indica strains. The result is autoflowering cannabis strains that are easy to grow, have a shorter life cycle, and require less maintenance, making them ideal for both beginners and experienced growers looking for a quick, hassle-free cultivation process.

Advantages of growing autoflower seeds:

Indoor Growing: Autoflower seeds are great for small indoor grows, their compact size, makes them perfect if you are a bit tight on space.

Fast Flowering: Autos grow incredibly fast, often flowering within 2-4 weeks from germination and growing seed to harvest in 10 weeks. This quick turnaround allows for multiple harvests in a single season.

Hardy Ruderalis Genetics: Originating from the robust Cannabis ruderalis, autoflowers inherit resilience to harsh climates and common plant diseases, reducing the need for pest and disease and temperature control.

Same Light Cycle: Autoflowers don't require changes in the light cycle to flower. They can be grown under the same light schedule throughout their life, simplifying the growing process.

How much do autoflower strains yield?

Autoflower strains typically yield between 30-100 grams per plant. However, with high-yield genetics and optimal growing conditions, some plants can produce as much as 200 grams.

How potent are autoflowers?

Autoflowers have significantly increased in potency over the years. Traditionally, they had THC levels around 10-15%, but recent advancements in selective breeding have led to autoflowering strains that can reach up to 26% THC.

How long do autoflowers take to grow from seed?

Autoflowers typically take about 8 to 10 weeks to grow from seed to harvest. This short veg and flowering stages is one of their main advantages, shaving months off your schedule and allowing for quick turnover and multiple growing cycles within a single season.

What is the best light cycle for autoflower strains?

Most growers choose a lighting schedule of either 18 hours of light and 6 hours of darkness (18/6) or 20 hours of light and 4 hours of darkness (20/4). These cycles offer a balance of optimum light absorption and enough nightly recovery time. However, autoflowers are adaptable and can grow under almost any light cycle. Some growers even opt for 24 hours of continuous light to maximize growth, although this can stress plants.

Are all autoflower seeds feminized?

All of our autoflowers at 420 Seeds are feminized, ensuring they grow into bud-producing female plants. While it is possible to find regular autoflower seeds, they are less common and not as popular due to the higher likelihood of male plants that don't produce buds.

What is the best way to store autoflower seeds at home?

Autoflower seeds should be stored in an airtight container, placed in a cool, dark, and dry area away from temperature fluctuations. This environment keeps them fresh for longer ensuring their viability. If you plan to store them for longer than six months, it's best to keep them in a refrigerator at 6°C - 8°C.

Best Sellers
  1. Jack Herer Feminized by Sensi Seeds
    Jack Herer Feminized by Sensi Seeds
    From: US$68.08
    • THC: 15%-18%
    • Yield: 500-600gr/m²
    • Flowering Time: 12-14 Weeks
    More Info
  2. White Runtz Feminized Anesia Seeds
    White Runtz Feminized - Anesia Seeds
    From: US$38.74
    • THC: Over 25%
    • Yield: 400-500gr/m²
    • Flowering Time: 8-10 Weeks
    More Info
    Best Seller
  3. Mango Cookies Autoflower - Auto Seeds
    Mango Cookies Autoflower - Auto Seeds
    From: Now US$20.89 Was US$29.85
    • THC: 19%-22%
    • Yield: 300-400gr/m²
    • Flowering Time: 6-8 Weeks
    More Info
    Sale
    30% OFF
  4. Godfather OG Autoflower - Auto Seeds
    Godfather OG Autoflower - Auto Seeds
    From: Now US$24.89 Was US$35.56
    • THC: Over 25%
    • Yield: 400-500gr/m²
    • Flowering Time: 10-12 Weeks
    More Info
    Sale
    30% OFF
  5. bruce banner auto
    Bruce Banner Auto Feminized 5 Seeds
    From: Now US$37.98 Was US$58.42
    • THC: Over 25%
    • Yield: 500-600gr/m²
    • Flowering Time: 8-10 Weeks
    More Info
    Sale
    35% OFF
  6. Slurricane Feminized- Anesia Seeds
    Slurricane Feminized- Anesia Seeds
    From: US$39.37
    • THC: Over 25%
    • Yield: 400-500gr/m²
    • Flowering Time: 8-10 Weeks
    More Info
    Best Seller
  7. Original Gorilla #4 Feminized- Anesia Seeds
    Original Gorilla #4 Feminized- Anesia Seeds
    From: US$40.01
    • THC: Over 25%
    • Yield: 550-650gr/m²
    • Flowering Time: 8-10 Weeks
    More Info
    Best Seller
  8. Bruce Banner #3 Feminized- Anesia Seeds
    Bruce Banner #3 Feminized- Anesia Seeds
    From: US$41.28
    • THC: Over 25%
    • Yield: Over 600gr/m²
    • Flowering Time: 8-10 Weeks
    More Info
    Best Seller
  9. Amnesia Flash Feminized- Anesia Seeds
    Amnesia Flash Feminized- Anesia Seeds
    From: US$38.10
    • THC:
    • Yield:
    • Flowering Time:
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  10. Runtz Feminized
    Runtz Feminized 5 Seeds
    From: Now US$37.98 Was US$58.42
    • THC: 24%-26%
    • Yield: 450-550gr/m²
    • Flowering Time: 8-10 Weeks
    More Info
    Sale
    35% OFF
  11. gelato-dream-feminized-anesia-seeds
    Gelato Dream Feminized - Anesia Seeds
    From: US$40.64
    • THC: Over 25%
    • Yield: Over 600gr/m²
    • Flowering Time: 8-10 Weeks
    More Info
    Best Seller
  12. BLACKBERRY MOONROCKS FEMINIZED
    Blackberry Moonrocks Feminized - Anesia Seeds
    From: US$40.64
    • THC: 24%-26%
    • Yield: 400-500gr/m²
    • Flowering Time: 8-10 Weeks
    More Info
    Best Seller