it's tricky. especially if your talking about u.s. me and my wife just started talking about moving to CA so i can grow some tomatoes. of course, fed laws still prohibit poss. or growing. also, since the CA state sup. court can't make a decision, every county in CA makes thier own guidelines for how much you can grow and possess. anyway, local laws did change in many counties, lowering the amount you can gr-poss, but i think that was a few years ago.