Do Greater Western Cicadas Influence Fruit Trees and Ornamentals

Greater Western cicadas are a recurring ecological event in the western United States that can influence both fruit trees and ornamental plants. This article explains the nature of these cicadas and how their life cycle interacts with woody plants in gardens and landscapes. The goal is to provide practical information for homeowners and landscape professionals on how to recognize signs of cicada activity and how to respond in ways that protect plant health and preserve beauty.

The biology of Greater Western Cicadas

Greater Western cicadas belong to the order Hemiptera and to the family Cicadidae. They spend many years underground as nymphs feeding on sap from plant roots and then emerge as winged adults for a brief period. Males produce loud courtship songs to attract mates and many species display distinctive colors and patterns that help with species identification.

The typical life cycle and emergence patterns

These cicadas have extended underground development followed by synchronized emergence. The above ground activity occurs in a defined window of warm weather in late spring or early summer. Females lay eggs in the branches of trees and shrubs and the resulting slits can weaken twigs.

Potential effects on fruit trees

The primary direct damage to fruit trees comes from the egg laying activity of females. They make slender slits in small twigs and branches that can cause minor limb damage and potentially increase the risk of infection in open wounds. In mature fruit trees the impact is often limited unless the trees are stressed or already compromised.

Effects on ornamental plants and landscape settings

Ornamental plants can suffer twig injuries from egg laying in the same way as fruit trees. The damage is often cosmetic but in heavily infested shrubs flowering can be reduced. Overall ornamental plants in well cared for landscapes usually recover with minimal long term effects.

Monitoring and identification strategies

Homeowners can monitor cicada activity by observing the landscape for loud songs and by inspecting branches for fresh egg slits after population peaks. Early recognition allows timely decisions about whether to prune damaged wood or to implement protective measures. Accurate identification helps distinguish cicada damage from other common problems such as drought stress or disease.

Practical observations for gardeners

• Listen for loud male calls during warm days to time peak activity.

• Inspect small twigs for pencil thin egg slits within the bark.

• Note any twig dieback or scorch marks after cicadas have completed their breeding phase.

• Observe whether new growth emerges in the same season or the following season.

• Record dates of first sightings to improve future planning.

Recording and data keeping

• Maintain a simple garden journal noting emergence dates and the affected plant species.

• Photograph damage and track recovery over time.

• Compare current year sightings with local extension service alerts to understand patterns.

Management options for home gardens

Gardeners can mitigate cicada related damage using a combination of timing, plant health maintenance, and selective pruning. Physical barriers and careful pruning help protect vulnerable wood without harming beneficial insects. In most cases cicadas do not require chemical control because they are short lived and non predatory.

Non chemical methods in the landscape

• Prune damaged twigs only after cicadas have completed nesting activity to avoid stimulating more wounds.

• Use protective netting or fine mesh to cover small ornamental trees during peak emergence.

• Apply proper irrigation and fertilization to keep trees robust against physical stress.

Timing and coordinated management

• Coordinate pruning and plant maintenance with local cicada emergence forecasts from the extension service.

• Schedule irrigation to minimize drought stress during and after cicada activity.

• Avoid unnecessary pruning of large limbs during peak activity to reduce wound exposure.

Environmental and ecological considerations

Cicadas are part of a broader ecology and their emergence influences soil biology and predator populations. The underground nymphs contribute to soil aeration and nutrient cycling as they feed on root tissue and later die and decompose. These events can benefit plant communities by providing a pulse of nutrients and by supporting certain birds and insects that feed on cicadas.

Cultural and economic significance

Public interest in cicada events can be high because the emergence period attracts observers and photographers. Local festivals and educational programs often highlight the season and promote appreciation for urban trees and biodiversity. Economically the direct impact on crop yields is typically minimal but some segments such as fruit growers may monitor for potential losses during heavy emergences.

Conclusion

Greater Western cicadas represent a natural phenomenon that interacts with fruit trees and ornamental plants in complex ways. With informed monitoring and adaptive garden practices the impact on landscape value and plant health can be managed effectively. Home gardeners should balance the appreciation of cicada emergence with prudent plant care to maintain vitality and aesthetics.