0 plants is fine, anything more than that you're in trouble without the proper documents ie; mmj card, at least until the law is changed and no one can grow for personal use or as a caregiver for someone with an mmj card. Technically 1 plant and you are in violation of their laws but, it depends on where you live in Canada and the police you're dealing with
sorry shmeeze16 I don't know the laws since I don't test them, the last thing I recall in Toronto was a statement/story in the news from the chief of police or a spokesperson that, until the laws are rewritten, minor offences would be dealt with by a warning or fine regarding possession. As for growing, if you qualify you can grow your own or designate a grower for your meds until the gov't tries again to make it illegal for anyone to grow other than those companies approved b the gov't. Google may help find the applicable laws.