As I've said before in these kind of posts, I wouldn't take anymore than a cutting... If someone fucked with my grow, personally I wouldn't kill them, but severe pain would be in your near future! Growing outdoors in a undisclosed location can be tricky and have many risks, such as someone stumbling across your grow and planning to rip you off for all your hard work. If I grew guerilla style and had 8 foot monsters in the natural sun I'd be honored if a cannibus enthusiast took a cut or two, as far as ripping off the grow completely... FUCK YOU, do the right thing!