Invasive Species

Invasive species are non-native species which reproduce and spread rapidly, causing major disturbance to wildlife and change the balance of the ecosystem. Usually the reason for the unintentional introduction of these pests is due to human error.

Ohio has been affected by invasive species including tree pests such as emerald ash borer, gypsy moth, hemlock woolly adelgid, brown marmorated stink bug, Asian longhorned beetle, chestnut blight, Dutch elm disease, European corn borer (a major corn crop pest) and the walnut twig beetle (which can spread deadly thousand cankers disease in walnut trees).  

Emerald Ash Borer


Knox County, Ohio