What You Need to Know
Oak wilt is a very serious disease of oak trees, caused by a non-native fungus. First described in Wisconsin in 1944, it has spread across the Midwest and into the Appalachians and Texas.
Oak wilt can affect many species of oaks, but it's particularly hard on red oaks, the kinds of oaks that have pointed tips on their leaves. Most red oaks die within a month of symptoms appearing.
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