I'm guessing nute burn or N deficiency. But the latter usually has the plant turning lime green too, so I'm guessing burn. How much are you feeding them? Perhaps you should post in the plant problem area for better help.
Opie Yutts Reviewed by Opie Yutts on . growing problems please help I've been growing for about 1 month and 7 days and all the plants are doing great except for one. This plant has started to form some sort of balls on the tip purple in color and the plant is very tiny with abnormal growth. All my plants have been in vegetative state so I don't believe that this particular one has started to flower. Please help........ Rating: 5