It is 100% from the spray. I have had this happen many times. The best way to know when to harvest is to use a scope to check the trichomes. If you dont have one go to radio shack (the shack) and pick one up. I think they are around $20. How long have you been flowering? My motto is "when it looks ready wait a week". I have also never seen weed that matured to long but I have seen lots that could have been wa better if the grower just let go a little longer. But you know how the commercial grower is. Always in a hurry to get it out and get the money in. If you grow for your own use its well worth waiting till its done. Good luck[/QUOTE
Read this damnit