basically, the guy growing is responsible, the guy who owns has plausible deniability of the action, but in all honesty, #2 and #3 are the most liable, frankly because #2 will blame #3 and the cops are really only looking to prosecute one guy, otherwise it's too much work. #2 could be charged as an accomplice but if he can prove he subleted to #3 then that's who is gonna be thrown to the dogs. In most of these cases they only want one person and as many people that point the finger at one guy that's the one they'll charge. #2 frankly would be a moron for renting the space and not watching what's going on. So basically either 2 or 3 is gonna be bent over for the growing. Basically renting and growing should only be conducted between 2 people, the rentor and the rentee that way you aren't putting other people's lives in the hands of people who are going to be doing something that is probably illegal.