labifleanswered grow question 6y ago Hey gardener! It can happen that the pistils turn brown if water falls on them or if you touched them or for any reason, but it doesn't mean anything significant unless your plant is hermaphrodite; it could have self-pollinated, and in that case, the pistils turn brown. So at worst, check if there are any male flowers on your plant, but I doubt it. As for the tips of the leaves, if they are not brown, they are not burnt, so no nutrient or light burn, and they will regain their normal color when the leaves mature. For the distances, you should go to their website and use the one they recommend. Good luck to you, bella ciao!