A non-native fungus is spreading across parts of the state, and it can kill infected trees in as little as six months. Check Your Oak Trees This SummerAs we head into August, weather conditions across New York have been anything but consistent. According to the New York State Department of Environmental Conservation, oak wilt is a non-native fungal disease that attacks oak trees and can spread rapidly. Signs Your Oak Tree May Be InfectedThe DEC says homeowners should watch for several warning signs of oak wilt, including:Leaves turning brown around the edges. For more information or to report suspected oak wilt, contact the New York State Department of Environmental Conservation or visit its official Facebook page.