Alligator juniper (Juniperus deppeana Steud.) is a weed tree of Arizona and New Mexico. It sprouts from stems, roots, or especially from buds on the crown, whenever the top is destroyed. Adequate mechanical control requires that the root crown be removed from the soil. Treatment of stumps with pelleted 3-phenyl-1,1-dimethylurea (fenuron) on the soil or polychlorobenzoic acid (PBA) sprayed on the stumps are promising means of preventing sprouting.