What is your method for keeping good breeder stock small (auto & photo)

[Reefer]

@Nagel420

I gotta assume for an auto, a small cup would force flowering early and stunt it. I know I stunted autos with some excess P/K in week 4, but ya probably dont wanna do that.

In my experience it will keep plant size down, but not necessarily cause it to flower early. In fact, it’s my experience that they will run longer if you stunt them and flower later. The same goes for auto clones ime, they seem roughly 2 -4 weeks behind their mom.