Hold Off Pruning Your Ash Trees | Environment
Now is USUALLY the time of year to prune your ash trees. But just wait.
Because of the unusually warm summer, the emerald ash borer isn't dormant quite yet. The beetle is usually inactive between Labor Day and May 1st, but officials say the bug is still on the move. They suggest you don't begin pruning until October 1st.
The emerald ash borer has already killed millions of ash trees in 15 states. About 20 percent of the tree canopy in Minneapolis is made up of ash trees. The Minnesota Department of Agriculture has issued a state quarantine on firewood, ash trees, and ash tree products in Hennepin, Ramsey, Houston and Winona Counties to slow the spread of the beetle.
If you have questions about an ash tree in your yard, click "Ash Tree ID" here.
For more information on the emerald ash borer, click here.