autoflower cannabis seeds yields can vary a lot, but here’s a clear, realistic breakdown so you know what to expect 🌱


Typical Autoflower Yields

🌿 Indoor (per plant)

  • Low end: 20–40 grams (≈ 0.7–1.4 oz)
  • Average: 40–100 grams (≈ 1.4–3.5 oz)
  • High end (dialed-in grow): 120–200+ grams (≈ 4–7 oz)

☀️ Outdoor (per plant)

  • Low end: 30–60 grams
  • Average: 60–150 grams
  • Excellent conditions: 200+ grams (≈ 7 oz or more)

What Affects Autoflower Yield Most

🧬 Genetics

Not all autos are created equal. Modern “XL” or “super” autoflowers can rival small photoperiod plants, while older genetics tend to stay smaller.

💡 Light

  • Indoors: Strong LEDs (18–24 hrs/day) = better yields
  • Outdoors: Full sun = noticeably bigger plants

🪴 Pot Size

  • 3–5 gallon pots are the sweet spot
  • Too small = restricted roots = lower yield

🌱 Growing Style

  • Autos dislike heavy stress
  • Low-Stress Training (LST) helps
  • Avoid topping unless you’re experienced

🧪 Nutrition

  • Light feeding early, more during flower
  • Overfeeding autos is a common yield killer

Autoflower vs Photoperiod Yield (Quick Reality Check)

Autoflowers usually yield less per plant, but:

  • They finish fast (8–12 weeks seed-to-harvest)
  • You can run multiple harvests per year
  • They’re compact and discreet

Many growers end up with more total harvest per year using autos.


Bottom Line

If you’re growing decent genetics with good light and basic care, expect 2–4 ounces per plant indoors and 3–6+ ounces outdoors. Push conditions hard and autos can surprise you.