Here’s a clear comparison to help you understand the difference between fast version seeds and Autoflower Seeds in cannabis cultivation:


🌱 1. What Are They?

Fast Version Seeds

  • Traditional photoperiod cannabis seeds that have been bred to grow faster than regular photoperiod strains.
  • They still depend on light cycle changes (more darkness) to trigger flowering, but overall they finish quicker than standard photoperiod plants.

Autoflower Seeds

  • Cannabis seeds that automatically switch from vegetative growth to flowering based on age — not light cycles.
  • They’re usually derived from Ruderalis genetics and are known for speed and simplicity.

2. Growth & Flowering Timeline

TypeStarts Flowering When…Typical Grow Cycle
Fast Version SeedsLight schedule change (e.g., 12h light / 12h dark)Generally shorter than normal photoperiod, but longer than autos
Autoflower SeedsMaturity (age)Very fast (often 8–10 weeks total)
  • Fast Versions: Faster than standard plants but still depend on a light switch to flower.
  • Autoflowers: Flower automatically around a certain age — no light schedule change needed.

🌞 3. Light Schedule

Fast Version Seeds

  • Need controlled light cycles.
  • Usually started at long light (18–24h) then switched to 12/12 to flower.

Autoflower Seeds

  • Can be kept under long light hours throughout (e.g., 18–20h) — no switching needed.
  • Great for beginners or simple setups.

📏 4. Size & Yield

Fast Version Seeds

  • Tend to grow larger than autos.
  • Usually higher potential yields (more biomass).

Autoflower Seeds

  • Often smaller plants, lower yields per plant.
  • But you can grow multiple cycles per year.

🧬 5. Control & Flexibility

  • Fast Version: Offers more control over plant size and flowering timing.
  • Autoflower: Very low maintenance — simple but less flexible.

💪 6. Which Is Better for You?

Choose Fast Version Seeds if:

✔ You want larger plants
✔ You don’t mind managing light schedules
✔ You want higher yields

Choose Autoflower Seeds if:

✔ You’re a beginner
✔ You want the easiest grow
✔ You want faster cycles with minimal care


🧠 Summary

  • Fast Version Seeds = Photoperiod plants bred for faster flowering, but require light changes.
  • Autoflower Seeds = Auto-flowering regardless of light, super fast and easy to grow.