While not overly prevalent in Chanhassen,
oak wilt has been diagnosed on several trees in throughout the city. Watch your oaks, particularly red and pin oaks, each summer for branches full of dead, brown leaves and/or a rapid decline in health. If you have an infected tree that is diagnosed very early, there may be a chance to save it through pruning and chemical treatment. Infected oaks pose a serious threat to surrounding oaks and must be removed within 20 days to prevent the spread of the disease.