Emerald Ash Borer(EAB) was discovered in River Falls City limits in July 2019 on the south end of the City. The infested trees have since been cut down but regular monitoring will now take place every spring to identify new EAB infested trees. River Falls has also initiated its action plan to begin to remove select Ash trees from the City before they become infested.
New detections of EAB are hard to detect. EAB infested trees won’t show much exterior stress until a couple years after infection. Adult EAB insects can only travel about a ½ a mile on their own; however, careless firewood movement of infected wood could move EAB across the City faster than expected.