Non-native Species of the Month
Black Locust
(Robinia pseudoacacia)
Black Locust is a fast-growing tree that can reach heights of 75 feet. It is classified as a Noxious Weed due to its ability to form dense stands through root suckers and start new stands through seed. It can crowd out native vegetation in degraded habitats of upland forests, prairies, and oak savannas. Twigs have sharp thorns, leaves are pinnately compound with oval leaflets, and flowers are in white clusters with a pea-like form. Control methods include cutting and spraying with a systemic herbicide to prevent resprouting.