I have looked all over and get conflicting info. Do outdoor grows in Michigan need a top on. I know it needs a lockable fence. No specific height or top. "It has to be in closed on each side except the bottom" Even the lawyers are not sure and no one at the state to contact
As far as I know it doesn’t need a top but it cannot be in an area easily seen by the general public. It should be secure enough that you don’t have to worry about theft. Just use common sense and you should be ok. If you have close neighbors you may need to do some work to hide it.