I was wondering if 3 weeks into flowering was to late to prune/thin plants out? I did it once during veg under flourecents and right after transplanting in g.h. so it was done twice but ive noticed a lot of inner stuff still. we have only been covering the greenhouse for 1 week today but they were put out on the 18th of March and seemed to be starting to flower then. They are Sour Diesel clones. Im in the Sonoma County area btw..... Thanks