A police helicopter in the backyard

[anarchir]

Please tell me you at least flipped them the bird?  Maybe you should install a bunch of heat lamps and such in there and see if you get raided.

[Libertarianssuck]

You should lock it and cover it up so they can't see inside. See if they try to break in with no reason to. Unless your growin shit...

[Alex Libman 15]

What is the highest altitude a man can hit a soccer / baseball / golf ball?

[Riddler]

NOW it's clear to start growing weed, as they've assuredly crossed it off the list.
lightning striking same place twice & so forth

[Changed My Mind]

put a banner up on the roof of the greenhouse that says something stupid like "no weed here asshole" or "made ya look"

[Bill Brasky]

100 ft of this, right out in the garage.  

[Ben]

lol. I love the suggestions.
I might try fixing it up so they can't see inside plus putting a sign on the roof would be good "No weed here asshole". If there was a way to shorten "If you can read this you are trespassing, even if you're police" that could be another good one.

Please tell me you at least flipped them the bird?  Maybe you should install a bunch of heat lamps and such in there and see if you get raided.

Unfortunately I didn't, although that would be a good one if I have a camera ready. I'll flip them off and make sure I don't get on camera doing that and when they go to flip me back it might get on camera.

Oh yeh, I'm not growing anything either. If I was, it wouldn't be in the greenhouse. A greenhouse seems to be a good distraction, though

[Riddler]

Oh yeh, I'm not growing anything either.

sure you're not

[CaL DaVe]

put a banner up on the roof of the greenhouse that says something stupid like "no weed here asshole" or "made ya look"

I like this the best.