Pests & Diseases

Don't Move Firewood

In an effort to protect the trees of Ohio from multiple pest infestations that threaten the health and viability of the state’s hardwood forests, the movement of firewood and certain tree products is tightly regulated by both state and federal authorities in Ohio. 

In Butler County, the movement of nearly all types of hardwood products is prohibited. Regulated materials that should NOT be removed from Butler County include hardwood nursery stock, unprocessed lumber, or any other type of hardwood material, such as logs, stumps, roots, branches, mulch, wood chips, or any firewood (including firewood that is kiln-dried, seasoned, or green).

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Information on Asian Longhorned Beetle, Emerald Ash Borer, and Thousand Cankers Disease - all impacting southwest Ohio - can be viewed below. For information on additional tree pests and diseases, view the Insect Pests & Diseases Poster and follow the QR codes. 
  1. Asian Longhorned Beetle
  2. Emerald Ash Borer
  3. Thousand Cankers Disease
The Asian Longhorned Beetle (Anopliphora glabripennis) is a large insect native to Southeast Asia that was first discovered in the United States in the mid 1990s in New York. The Asian Longhorned Beetle (ALB) has no known natural predators and poses a threat to Ohio’s hardwood forests. This invasive beetle is not a species-specific pest, but targets many different species of trees. 

Discovered in Clermont County in 2011, Ohio is the fifth state to find ALB. The Federal government is working in conjunction with local governments and professional arborists to combat it. ALB was successfully eradicated in Illinois and parts of New Jersey, and is currently being controlled in New York and Massachusetts. With the help of local citizens reporting known infestations it can be controlled in Ohio as well.

Signs of Asian Longhorned Beetle infestation include perfectly round exit holes (about 3/8 to 1/2 inch in diameter) made by adult beetles when they emerge from trees; pockmarks on tree trunks and branches where female beetles deposit eggs; frass (wood shavings and saw dust) produced by larval feeding and tunneling; early fall coloration of leaves or dead branches; and running sap produced by the tree at the egg laying sites, or in response to larval tunneling. Infested trees may also snap or break during high winds due to the wood being weakened by tunneling. Please report potential infestations to the Ohio Department of Agriculture at 855.252.6450 or

Additional ALB resources: