Be careful man. When you're growing a "drug plant" even a completly legal one, you sometimes get addicts who can't afford their hit breaking onto your property to get your "stash."
I'm not sure how common that is with Tobacco specifically, but I've heard stories and nicotine is pretty fricking addictive. If people are willing to pull butts out of the trash or fish a smoke out of the toilet, they're willing to trespass in someone's yard and strip his plants down.