Do Prairie Cicadas Cause Tree Or Plant Damage

Prairie cicadas in the summer landscape invite questions about their potential to damage trees and other plants. This article reexamines that issue and explains how their behavior affects vegetation in field and garden settings.

What are prairie cicadas

Prairie cicadas are insects that live in open grasslands and nearby woodlands. They belong to the class of insects known as cicadas and to the broader group of true bugs. These insects have a life cycle that includes a lengthy underground stage followed by a brief above ground activity.

Cicadas in prairie regions often differ in emergence patterns from those in forested areas. Some species emerge annually while others come in irregular cycles. In all cases they spend most of their lives underground as nymphs feeding on plant sap.

How do cicadas damage vegetation

Female cicadas lay eggs by making slits in the twigs of trees and shrubs. This process can create small wounds that may heal over time. The slits are a normal part of the life cycle and do not normally kill parent plants.

Nymphs drop from trees to the soil and feed on xylem sap. The damage to mature trees is usually light. Injury to small plants or very young trees can be more noticeable after a large emergence.

The overall impact depends on the size and vigor of the plant and on weather conditions. In well watered and healthy landscapes the cosmetic damage often heals without lasting effects. When plants are already stressed the damage can slow growth briefly and delay new shoot growth.

Prairie cicadas on prairies

Prairie cicadas favor open habitats and many emerge in late spring through midsummer. Their timing often coincides with periods when grasses and shrubs are growing. In prairie landscapes the impact on large established trees is typically minor. Young plants and recently planted specimens may show more signs of wood damage.

These insects tend to use a wide range of plant hosts. The damage pattern is not uniform across the landscape and depends on local conditions. In most cases the effects are localized to certain twigs or branches and do not threaten overall plant survival.

Tree and plant species affected

Young trees with thin bark are more susceptible to egg laying damage. Older trees with thick bark are less affected. The difference in vulnerability helps explain why some landscapes show limited injury while others exhibit more marked signs of scarring.

Shrubs and fruit bearing plants may face localized branch dieback on the newest growth. When outbreaks are extensive the loss may be visible on a few branches but typical overall health remains intact. Healthy plants usually recover and continue to grow despite the presence of cicadas.

Ecological roles and benefits

Cicadas contribute to nutrient cycling when spent skins and bodies decompose. This adds organic matter to the soil and stimulates microbial activity. The increase in soil nutrients can support plant growth in the long term and help sustain diverse soil communities.

Cicadas serve as a food source for many birds and other predators. Large emergences can provide a pulse of protein that supports ecological communities. The woodland and prairie ecosystems often display a temporary increase in predator activity during cicada seasons.

Management and mitigation in landscapes

Managing cicada damage focuses on maintaining tree health and using site specific methods. Healthy trees tolerate feeding attempts better and recover quickly. Good irrigation practices and proper pruning can reduce stress on plants during and after emergence.

During a high emergence some simple steps can reduce injury to vulnerable plants. Protecting young trees with mesh guards or cages can prevent oviposition by females. It is important to use these measures only when necessary and to remove them once cicada activity diminishes.

Practical steps for gardeners and land managers

• Monitor the landscape for signs of cicada activity during the warm months

• Inspect young trees regularly for egg slits on twigs

• Provide irrigation and proper mulching to keep trees vigorous

• Use protective fencing or mesh only on vulnerable plants and where appropriate

• Avoid unnecessary pruning during the emergence period

• Do not apply broad spectrum pesticides during emergence as they harm non target species

Common myths and facts

Common myths persist about cicadas harming trees by chewing wood. In reality cicadas do not chew wood to feed and do not cause widespread trunk damage. They use their ovipositors to lay eggs in twigs while feeding by piercing plant sap.

Another myth is that periodical cicadas are always dangerous to mature trees. The truth is that mature trees are generally resilient and recover from egg laying with minor scarring. The presence of cicadas does not automatically translate into severe or lasting tree decline.

Observing cicadas in the landscape

Observing cicadas can be a rewarding activity for gardeners and naturalists. Notice their sound and the timing of their emergence to understand habitat conditions. Documenting which trees show signs of egg slits helps build a picture of local cicada behavior.

Record where egg slits appear and how many trees show signs of damage. This information helps in planning future planting and maintenance routines. Observers can compare years to assess whether particular landscapes recover quickly and whether protective actions were beneficial.

Conclusion

Prairie cicadas cause some amount of damage to vegetation in general terms but the impact is typically limited on mature trees. They also provide ecological benefits and contribute to biodiversity in prairie ecosystems. By maintaining tree health and using targeted protective measures for young plants land managers can minimize harm. The overall role of prairie cicadas in the landscape is balanced by multiple ecological functions.