you can veg a cannabis plant indefinitely. there are people that have the same moms from 20+ years ago.

i'd let them get good roots (time varies depending on starting from seeds or clones). once they have good roots i'd flip them to 12/12. keep in mind that depending on your strain (and a few other factors) your ladies will double or triple in size during the "stretch".

you can use some training methods to keep them shorter and bushier. look into topping and LST.

i'd say get at least a 400W HPS, or better yet get a 600W. you can find a digital one for ~$200.


-shake