17-year cicadas are set to emerge in the eastern United States in the spring of 2021. These insects spend most of their lives underground as nymphs, feeding on the roots of trees and other plants. When they emerge, they will feed on the sap of trees, which can cause damage to the leaves and branches.

While cicadas can cause some damage to trees, it is important to note that they are not a major threat to the overall health of trees. In most cases, the damage caused by cicadas is cosmetic and does not affect the long-term health of the tree.

Here are some tips for protecting your trees from cicada damage:

* Keep your trees healthy and well-watered. Healthy trees are more resistant to damage from cicadas.

* Apply a layer of mulch around the base of your trees to help retain moisture and protect the roots from damage.

* Wrap the trunks of your trees with burlap or other material to protect them from cicada nymphs climbing up the trunk.

* If you see any cicada nymphs on your trees, remove them by hand.

Cicadas are a part of the natural ecosystem and play an important role in the food chain. While they can cause some damage to trees, it is important to remember that they are not a major threat to the overall health of trees. By following these tips, you can help protect your trees from cicada damage.

For more information on cicadas, visit the following resources:

* The United States Department of Agriculture (USDA)

* The National Park Service

* The University of Maryland Extension