How to Kill a Black Locust (Thorn Locust) Tree
To kill black locust, treat the root-connected plant, not just the trunk, with a cut-stump, basal-bark, or foliar herbicide treatment, then keep removing or treating new sprouts. Simply cutting, mowing, burning, or girdling the tree usually gives only temporary results because black locust spreads through vigorous root suckers. The best method depends on whether you…
