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It’s not as common for Dutch elm disease to affect other types of trees, especially if the surrounding trees aren’t elms. However, it is possible for DED to spread to other trees, particularly in northern states, like Minnesota. In fact, it’s a good idea to use geography to identify wood and determine which types of trees are in your yard. 

Unfortunately, the complex and shallow root system of elm trees makes surrounding elm trees particularly vulnerable to DED. Early discovery is key!

Trees that flower in the spring—like dogwood, cherry, magnolia, and pear—should not be pruned during the winter. These spring-flowering plants grow buds on old growth, so you’ll actually remove what would’ve been gorgeous flowering foliage. Instead, wait to prune until right after they bloom, when the flowers fade.

Though summer is not ideal, you can do some light pruning during this time of year. Just make sure it’s not excessive. Vigorous pruning will stress the tree and impact next year’s growth. Generally, August to September are the best summer-pruning months, particularly for fruit trees.

According to scientists at Penn State University, spotted lanternflies do not typically kill the trees and plants they feed on, but they can cause branches and segments to die off. However, they have been found to kill cultivated grapes, which can have devastating consequences for vineyard owners and regions that heavily rely on vineyards to create jobs and generate revenue. They have also killed the Ailanthu altissima, known as the tree of heaven, though this is classified as a noxious and invasive weed tree.