Buckthorn Baggie kills invasive trees without chemicals
The genesis of the nontoxic Buckthorn Baggie starts with trees that refused to die. The common buckthorn, one of the most troublesome invasive trees in the Midwest, forms a dense thicket that crowds out native plants. Cut to the ground, it springs back, Hydra-like, with up to a dozen eager offshoots that form an equally appalling forest monoculture.
Or you can just zip-tie (or rubber band) a piece of an old black plastic garbage bag over the stump.