Plant height?

At what height should I turn the plants over so they are not too tall. I am trying to avoid having three foot plants. I would rather short and plump.

Like everything, it totally depends on strain. My general guideline for short plants (not necessarily plump) is to veg to 3rd-5th internode and then switch to 12/12. Most of the time this will get you a plant with minimal side branching though. For plump, the best idea is to top or tie down multiple times and veg for longer, although some strains will stretch a ton and still end up getting tall.

Best bet is to grow indicas or autos if you want to stay short.

PP

get an indica blend and top the hell out of it