sometimes temperature, sometimes strain genetics, sometimes nutrient deficiency.
not sure of anything else that would do it.

too much light is said to even bleach the buds, but no purpling from that.
GreenDestiny Reviewed by GreenDestiny on . Purple buds? What's the difference between purple buds & normal buds. I get alot of different answers. I heard it's mostly just climate that makes buds purple. Anyone know? Rating: 5