I have the same problem with one of my plants, it looks they are twins. I grew mine from a FREE seed that I got from Amsterdam seeds.It has huge airy buds, but six weeks into flowering it has no trichs. All my other plants have nice tight buds, all have gotten the same care. I know that this plant is going to have a 12 week flowering time, at least. If the buds ever fill in ,it will be my biggest producer of the grow.