according to ed rosenthals' book that is a sign of a return from flowering to vegetative state.

however some of my plants that were under 18/6 lighting also did this when it got COLD in my area.. then went right back to normal veg.
energyefficient Reviewed by energyefficient on . Help! Leaves curling in spirals I've been growing indoors and out, and haven't seen this before. This is not leaf claw or cupping. It's actually curling in a tight spiral. The strain is Pineapple Thai, and are showing flowers already. Growing outdoors in greenhouse. Other strains not affected. Has anyone seen this, or know what might be causing this? I don't have pictures, so I hope someone knows what I mean. Rating: 5