Our goal at River Falls Urban Forestry is to make a healthy, diverse, and resilient urban forest. Many years ago entire streets were lined with beautiful American Elm trees. Dutch Elm Disease swept through the area and devastated our elm population. Now 30 years later, we have beautiful Ash trees lining some of our streets once again. Emerald Ash Borer will sweep through our area and devastate our Ash population. Since 2004, the City of River Falls has been striving to improve diversity in our entire tree population. We cannot limit the tree species we plant to one, two, or even five species. Our new guideline for tree diversity has a target goal of no more than 15 percent of any genus of trees in a tree population. Our approved boulevard tree list has many trees both native and non-native in an effort to make our urban forest more resilient from the next large scale pest or disease. We encourage homeowners to also find new non-invasive species that they can plant on their private property to help strengthen our forest diversity.