I would have to say it's rather a case of nutrient burn and deficiencies at the same time.

Do you grow in soil or hydro? What nutrients do you use? What is your nutrient and/or medium pH?
gainesvillegreen Reviewed by gainesvillegreen on . new grewth tips curling/corkscrewing?? Ok so after recovering from yet another noob mistake on my first grow (and i think recovering quite beautifully) ive noticed that the new tips on my plant are curling under and some are even corkscrewing along the entire leaf! the plant looks pretty healthy in my opinion aside from the curling and corkscrewing. She's been on a 12/12 light cycle for almost a week now, hasnt been watered for 4 or 5 days (last water was a flush, last flush was a 25% nute solution), so any ideas whats causing it? Rating: 5