Autoflowering Seeds

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The Ultimate Guide to Autoflowering Seeds

Discover everything about autoflowering seeds, their cultivation, advantages, and popular varieties to ensure a successful grow. Autoflowering marijuana seeds have revolutionized cannabis cultivation, offering growers of all levels a fast, discreet, and efficient option. At SantYerbasi, you’ll find an extensive and up-to-date catalog featuring the best autoflowering genetics on the market. Below, we present a complete guide to help you choose cannabis autoflowering seeds.

What Are Autoflowering Marijuana Seeds?

Autoflowering seeds are cannabis varieties that flower automatically without relying on the photoperiod (hours of light and darkness). This is possible thanks to their genetics, which combine indica or sativa strains with Cannabis ruderalis, a hardy, short-cycle subspecies. These seeds are ideal for growers seeking speed, discretion, and ease of cultivation.

Advantages of Autoflowering Marijuana Seeds

Growing autoflowering seeds offers several advantages, such as a faster lifecycle, enabling growers to achieve multiple harvests within a single season. Their reduced dependence on light conditions makes them easier to manage, especially for novice growers. Additionally, their resilience and adaptability make them less susceptible to pests and diseases.

Rapid Lifecycle

One of the main advantages of autoflowering seeds is their rapid lifecycle. This feature allows growers to plan multiple grow cycles in a year, thus maximizing production.

Reduced Light Dependency

The ability of autoflowering seeds to flower without changes to the light cycle means that growers can maintain a constant light schedule throughout the plant’s lifecycle. This simplifies the growing process and reduces the need for complex lighting systems.

Hardiness and Adaptability

Autoflowering seeds have been genetically selected to be robust and resistant to various environmental conditions. This makes them particularly suitable for beginner growers or those facing challenging climates.

Main Characteristics

  • Fast cycle: From germination to harvest in 8–10 weeks.
  • Compact size: Ideal for small spaces and discrete grows.
  • Hardiness: Well-tolerant of adverse conditions and pests.
  • Versatility: Suitable for both indoor and outdoor cultivation.
  • Continuous production: Multiple harvest possibilities per year.

How to Cultivate Autoflowering Seeds

  1. Germination: Use the wet paper method or sow directly into the substrate.
  2. Substrate: Light and airy, with good drainage.
  3. Watering: Moderate, avoiding waterlogging.
  4. Light: 18–20 hours daily to maximize growth.
  5. Nutrients: Fertilizers specifically for autoflowering strains, avoiding excess.

Best Practices for a Successful Grow

  • Avoid transplanting: Sow directly in the final pot to prevent stress.
  • Control pH: Keep pH between 6.0 and 6.5.
  • Monitor humidity: Between 40% and 60% throughout the cycle.
  • Adequate ventilation: Prevents mold and strengthens plants.

Common Problems and Solutions

ProblemCommon CauseRecommended Solution
Slow growthOverwatering or excess nutrientsAdjust watering and reduce fertilization
Yellow leavesNitrogen deficiencyApply nitrogen-rich fertilizer
Small budsLack of lightIncrease light hours or intensity
Pest presenceHumid, closed environmentImprove ventilation and apply insecticides

Best Autoflowering Seeds

VarietySeed bankFlowering timeYieldTHC / Notes
Red Jack AutoGrowers Choice11–12 weeks~60 g per plant (outdoor)Sativa-dominant
Rainbow Candy AutoflowerGrowers Choice10 weeksTHC 24–26%
Gorilla Cookies AutoGrowers Choice10 weeksUp to 750 g/m² (indoor)
Weddingcake x Frosty Gelato Double XL AutoGrowers Choice11–12 weeksTHC ≥ 26%
LSD AutoBarney’s Farm~70 daysVery high
Skywalker OG AutoBarney’s Farm70–75 days450–500 g/m² (indoor)
Pineapple Express AutoBarney’s Farm75 daysRelaxing terpene profile
Jealousy Z XL AutoSweet Seeds10–11 weeksRobust, high vigor
Sweet Gelato AutoSweet Seeds8–9 weeksIntense fruity aromas
Auto Dark DevilSweet Seeds12 weeksUp to 600 g/m² (indoor)
Zombie Kush Auto RipperRipper Seeds8–9 weeks400–500 g/m² (indoor)
Kmintz AutoRipper Seeds9–10 weeksMinty, relaxing flavor
Radical Juice AutoRipper Seeds10 weeksTropical aroma, compact

Most Awarded Autoflowering Seeds

VarietySeed bankAwards received
Critical Jack Herer AutoDelicious Seeds• 3rd prize – Best autoflowering variety, Expogrow Irun 2013
• 1st prize – Best autoflowering variety, Neurocopa del Pacífico 2017
• 2nd prize – Latin American Cannabis Cup 2018
Northern Lights AutomaticSensi Seeds• 1st place – High Times Cannabis Cup 1988 (Northern Lights #1)
• 1st place – High Times Cannabis Cup 1990 (Northern Lights #2)
• 1st place – High Times Cannabis Cup 1995 (Northern Lights #5)
• Lineage for award-winning hybrids such as Shiva Skunk and Silver Pearl
Auto Dark PurpleDelicious Seeds• 1st prize – Mar del Plata Cup 2016 (Category “Auto”)
Big Devil XL Auto® (SWS28)Sweet Seeds• 3 awards in international autoflowering competitions
Fast Bud #2 Auto® (SWS23)Fast Buds• 2 awards in international autoflowering competitions

Cheapest Autoflowering Seeds

VarietyApproximate priceSeed bank
Assorted Mix Auto From €3.50SantYerbasi
Magnum Auto From €8.00Buddha Seeds
Bruce Banner III Autoflower From €10.00Growers Choice

*Prices may vary due to promotions, offers, or price changes.

Frequently Asked Questions

  • How long do they take to flower?
    Autoflowering seeds usually take between 8 and 10 weeks from germination to harvest. This time may vary slightly depending on the strain and growing conditions.
  • Can I grow them indoors?
    Yes, autoflowering seeds are ideal for indoor cultivation due to their compact size and independence from light cycles for flowering. This makes them an excellent choice for small spaces or for growers who prefer strict control over environmental conditions.
  • How much water do they need?
    Autoflowering plants require regular watering, but it’s important to avoid overwatering to prevent issues like root rot. Moderate watering, adjusted to the plant’s needs as it grows, is essential for healthy development.
  • What if they don’t flower?
    If your autoflowering seeds don’t flower, it could be due to stress or unsuitable environmental conditions. Check temperature, humidity, and nutrition, and adjust as needed. Also ensure that the plants don’t suffer light cycle interruptions.
  • How does climate change affect their cultivation?
    Climate change can alter temperatures and rainfall patterns, increasing the risk of pests and diseases. Adapting cultivation practices and selecting resilient strains are key strategies.
  • Can they be crossed with other strains?
    Yes, autoflowering plants can be crossed with other genetics to create hybrids with specific flavor profiles, life cycles, and resistances tailored to your needs.

 

Conclusion

Autoflowering seeds represent a significant innovation in the world of cannabis cultivation, offering unique advantages in terms of simplicity, efficiency, and adaptability. With the information and tips provided in this guide, we hope to have illuminated the path for those interested in exploring the potential of these seeds. Whether you are an experienced grower or taking your first steps in cannabis cultivation, autoflowering seeds offer an exciting opportunity to experiment and enjoy the fruits of your labor.