A few of mine did that after a neem spray.
I checked the ones with curl and they seemed to have a oil film that I washed off and they have come back almost perfectly.
I also got a good PH pen and moisture probe and let them go through a dry cycle so it could be any of the above.
eastbaygordo Reviewed by eastbaygordo 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