If legalized I don't think the goverment would restrict growing it. They don't tax the growing of tobacco, only the selling of it. I can grow tobbacco in my back yard and cure and smoke it no problems, its when it is cultivated and sold that tax comes into the equation, I personally think it should be the same for mj, if you grow and do not sell for profit then no restrictions, but if you cultivate to sell you should be taxed and have to get a licensce and be subject to inspections just like anything esle. Thats because while most people are good natured, there will be greedy growers who grow in unsanitary conditions, spray glass on the bud to increase weight, no flushing ferts, and all that shit should be regulated to protect consumers.