Also try checking you pH, after I changed to a new soil mix, the first 2 batches of plants I grew croaked right over. The first thing that happned is the leaf tips curled and turned brown, then I noticed all the stems were purple, then I saw the veins on the leaves were purple and even the new leaves themselves were purple. All signs pointed to a nutrinet deficincey, but it seemed like it was Phosporus, Magnesium, and signs of one or 2 others. My crappy pH meter said it was ok for a few days, but then started reading a pH or around 4.5. I had used peat moss and not nearly enough lime to couteract the acidity. After several treatments with lime water, the pH of the soil was about right but the 2 weeks or so of stress killed all but one of the second batch. The first batch I foolishly assumed was just overwatering and watched them slowly turn brown from the bottom up, the leaves began twisting in wierd ways first, then started wilting from the tips, then the entire leaf would die, then up to the next set of leaves. Horrible thing to watch!
Sp00ner Reviewed by Sp00ner on . Crispy brown tips? My plant has 6 sets of leaves and is a little over 3 weeks old. My cam broke so i cant use that now, but the problem is the bottom 2 sets have brown tips that are dry and crisp. This happened after I watered, all of the other leaves are fine though. It is only about a 16th of an inch of these. And incase your wondering, its fine with the number of leaves, tall, slow growing strain. Rating: 5