I grow photo regs
Sometimes I grow them tall enough to take a cut, then flower the base
When I see pistils or balls I know which clones to cull
As I flower the base, I look for trichs, smell the stem rub, and note the growth structure, and cull as needed-
The winning cut gets to live, and flower, but the true test, is either with the re-veg, or clone, because it takes that long for a seed plant to fully mature, in my estimation…