I think it's normal for some sativas, I had my last harvest look like that after all the trichs had turned half cloudy/half brown, so I think it may be genetics. That and I also noticed that if I raise my lights they will grow to them in budding phase. I've had to move my lights up and up when they already had calve long buds and almost ready to harvest! Yea I agree with H Man. They can go for a long time, like if you put a bass in a fish tank it wont get very big, put it in a pond and boom! That sucker will be 20 lbs in no time. I found leave the light alone and don't move it up and they will stop that creeping along. The thing is to just watch how close it gets. I had em grow as close as 12 inches from 2 400w HPS and no burn. Looks like that pretty lady has at least another 3 weeks to a month to go, can't see the trichs though. Personally I let them creep till the buds are huge!!! Space is a problem though. God bless hope my first real post was helpful. Peace and God bless you and yours all!!