In the decriminalized states is it legal to grow and smoke as much as u want?
Decriminalization is the abolition of criminal penalties in relation to certain acts, perhaps retroactively, though perhaps regulated permits or fines might still apply (for contrast, see: Legalization). The reverse process is criminalization.
Even though it may be decriminalized, you can still receive a fine for possession. Here in ohio anything over a couple ounces and you go to jail. So, if you have a couple joints...they will confiscate or trash it, then give you a ticket.
I walk around town smoking, keep to myself, and im never bothered.