Do Cicadas Damage Trees and Plants?

Every 17 years, cicadas emerge from the ground in massive numbers across wide swaths of the United States, producing a deafening noise that can last for weeks. While their appearance may be fascinating and their song may be mesmerizing, many people are left wondering if cicadas cause damage to trees and plants.

Cicadas and Trees

While cicadas themselves do not directly harm trees, the females create slits in the bark of certain types of trees to lay their eggs. These slits, called "oviposition damage," can weaken the tree, making it more susceptible to other types of damage, such as disease or other pests. However, most healthy, established trees can withstand cicada oviposition and recover without any long-term effects.

Cicadas and Shrubs and Small Plants

Smaller plants, shrubs, and young trees are most at risk from cicadas. Cicadas may cause the tips of the branches to wilt and turn brown. While this can be alarming to homeowners, it is typically not a serious threat to the overall health of the plant.

Cicadas and Agricultural Crops

Agricultural crops are also at risk from cicadas, especially fruit and nut trees. The damage to the branches and twigs from cicada oviposition can cause apple, peach, and other fruit trees to produce reduced or misshapen fruit. In orchards, this can result in significant losses for growers. However, most farms have methods to protect their crops from cicadas.

What Can You Do to Protect Your Trees and Plants?

If you have young or newly planted trees, shrubs, or other plants, you may want to consider covering them with fine mesh netting during cicada season. The netting will stop cicadas from laying their eggs on your plants. If you have established trees, there is no need to worry about cicadas, as they are generally able to withstand the damage caused by cicadas.

If you are concerned about the health of your plants or trees after a period of cicada activity, contact an arborist or plant care specialist. They can examine your trees or plants and determine if any additional treatment or care is needed.

The Bottom Line

Cicadas do cause damage to trees and plants, but generally only weak or young ones. Established trees and plants are typically able to withstand cicada activity and recover without any long-term effects. If you are concerned about your trees or plants during cicada season, take proactive measures to protect them, such as covering them with fine mesh netting, and if you are still concerned after cicada activity has concluded, contact a plant care specialist for an evaluation.