you will know for sure when you see flowering "Stalk" Trichs, they stand out a ton... most leaves and stems have "Ball" and "Hair" Trichs throughout the life of the plant, they are tiny, so small infact theya re almost impossible to see with the naked eye, they give the top of the leaves an almost sandpaper like texture like 160+ grit, really fine but you can feel a slight drag. the "Stalk" trichs as i said youll know when yah got em, it looks like little spots of sugar clustered all over the small leaves growing from the buds. and as Growgreen420 said get yourself a pocket sized Loupe Jewlers Lighted Scope, about 10-15 bucks, defently worth it.