With White Widow, you're probably not going to notice much of a difference in trichome production because there's going to be a shitload of trichs at ten weeks! It's one of my favorite strains to grow and smoke, but be careful... she packs a punch! :stoned:

As for the darkness, I've tried a few days darkness before harvesting, and again, never really could tell much of a difference... mostly because the buds are literally snow-white by that time anyway. I'd be wary of trying it a full two weeks before the final chop, but that's just me. Have fun and good luck! :jointsmile: