start it in 1 gallon pots, when they get good roots (a few weeks after sprouting) put them in 3-5 gallon pots. I am using 2.5 gallon pots and mine are 23" and growing.
http://boards.cannabis.com/showthread.php?t=67935
4x5 Reviewed by 4x5 on . Container SIZE related to Plant SIZE (HELP!) I want to grow a 36" Sative Plant, with 4 main Branchs ( One Branch for each SQ Foot). What is a good container size for a plant like this for its whole life, i dont want to encounter rootbound. :) Rating: 5