MADISON — Ahead of the Memorial Day weekend, the Wisconsin Department of Natural Resources (DNR) urges the public to protect Wisconsin’s forests and trees by not transporting firewood long distances.

Memorial Day is the unofficial start of summer, and campfires are a Wisconsin summer staple. Even after a tree has died, firewood can carry pests or diseases, which can attack or infect other trees. To help prevent the spread of invasive species, get your firewood near where you will use it.

Firewood from a different location can bring harmful tree problems to your backyard, street or favorite campsite. Just one firewood log can easily hide insects such as emerald ash borer, spongy moth or the tiny spores of a tree-killing fungal disease such as oak wilt. By using local firewood, you avoid moving pests to new places. 

To prevent the spread of emerald ash borer and other invasive insects and diseases to Wisconsin state parks and other properties, visitors are prohibited from bringing firewood from locations further than 10 miles away from the property. Treated, pest-free wood from state certified vendors is exempted from this regulation.