GMSgrowsanswered grow question 4 years ago In my experience, I always found if your to high on nutes in early flower the pistols brown early and harvest amount suffers if not remedied. I dont like to see my pistols change colour until the 5th 6th week of 12/12..But if you sprayed neem oil on your flowers, that is a no no, could possibly be the reason. Check your runoff ph and ec and make sure the ec isnt to high and your ph is in proper range. Cheers friend