Autoflower Seeds

Brothers Grimm Seeds offers high quality autoflower seeds from one of the best feminized autoflower seed makers, none other than Purple City Genetics, a cultivation and breeding collective out of Oakland, California, known for premium genetics and affordable prices.

Purple City Genetics autoflowers are here after years of breeding and scaled field trials. Their goal has been producing autoflower seeds that rival our vast library of photoperiod cannabis genetics.

All Purple City Genetics autoflowers mature in 65–85 days from germination to harvest, without modifying the light cycle and without topping. Our autoflowers can be planted any time of year ensuring more frequent harvests and increasing ROI during shoulder seasons when photoperiod plants cannot be grown at scale.

About Planting Bulk Autoflower Seeds:

Q: How many autoflower seeds are recommended for outdoor planting?
A: Anywhere from 11,000 – 18,000 autoflower seeds per acre.