Sure, why not?
When Michigan first legalized "medical marijuana" a friend of ours approached me and said "you need to get into this! You grow a garden all the time, you have a greenhouse..."
All I could think was, what would I need, a stockade around the property to keep people from coming in and helping themselves? Like I need that sort of trouble?? But then, I'm one of what seems to be quite a small group of people who went to college in the late '60s/early '70s and never smoked pot or did any other drugs...