If you "found" them, leave 'em the hell alone. They aren't yours. Most likely someone is/has "worked" for months to cultivate them to this point.
Speaking from past experience, there is nothing more disheartening or disappointing, than to go to your patch one day, only to find it stolen after months of back breaking labor.
You don't want to steal them. All the information you need to grow your own is right here. You'll be much more satisfied smokin' your very own, than you will risking the bad karma and guilt from stealing someone elses work.