Ok so if i start a plant on 12/12 how long will it take to mature and how tall wil it get? What is the smallest a plant can be and still flower?
Depends on strain, usually 8-9 weeks from when flowering starts for indicas and 10-14 weeks for sativas.
the amount of bud you'll get off of that plant, if you start it on 12/12 right when it sprouts, wont be worth waiting 3-4 months for it. at least imo