Department of Natural Resources
Tree killers could be just one bundle of firewood away. Invasive insects and diseases have killed MILLIONS OF TREES in Michigan – often after hitching a ride on firewood. Hauling firewood, even a short distance, from one part of the state to another is a common way for these invasive species to infest new locations. Examples of invasives species include oak wilt, emerald ash borer and Asian longhorned beetle, among many others.
To protect the current and long-term health of Michigan's trees, we recommend that you purchase certified heat-treated firewood sold in state parks. local stores and roadside stands.