Updated: September 7, 2025

Strategies to reduce cicada harm to lawns and shrubs are explored in this article. The discussion covers behavior patterns seasonal timing and practical practices that limit feeding and injury while protecting plant health.

Understanding Cicada Behavior and Damage

Cicadas are large insects that appear in cycles every several years. They begin life as eggs laid on tree branches and hatch into nymphs that live underground. The adults emerge for a short period to mate and lay eggs.

Most of the visible damage to woody plants occurs when females insert small slits into young twigs as they lay eggs. This activity can cause bark cracking in susceptible shrubs and in the new growth of some ornamental plants. Damage to turf is usually avoided with cicadas but the presence of many insects can distract mowing.

The overall impact on turf is limited because the main feeding occurs on roots of trees during the underground stage. Above ground effects on lawns are typically minor unless cicada populations are extremely high. Understanding these patterns helps gardeners plan protective steps.

Assessing Your Lawn and Shrub Damage

Begin with a careful inspection of the landscape to identify where cicadas have touched plants. Look for fresh egg slits on small twigs and note any sudden browning or dieback in affected shrubs. Record the extent of damage to prioritize actions.

Compare cicada damage with other common problems such as drought stress disease or root compaction. The aim is to determine whether cicadas are the primary cause or an accent to existing problems. You can also assess soil conditions to understand plant resilience.

Documenting the pattern of damage over a season helps in planning interventions. Mark valued specimens that require protection and monitor new growth for signs of recovery. Develop a simple plan to address the worst areas.

Timing and Seasonal Interventions

Cicada emergence tends to coincide with warm months in many regions and peaks in late spring and early summer. Because these periods involve heavy adult activity plan protective steps before these peaks occur. The precise timing can vary by species and location.

Testing irrigation and mowing schedules helps minimize plant stress during a cicada surge. Avoid heavy pruning during peak emergence because new growth may be more vulnerable to damage. Coordinate timing with local weather and soil conditions to maximize plant resilience.

Monitoring forecasts and consulting local extension publications provide reliable timing guidance. Prepare protective measures such as netting or mulching so they are ready when cicadas appear. Rapid adjustments can reduce the risk of long term injury.

Cultural Practices to Reduce Cicada Impact

Adopting good cultural practices improves the overall health of lawns and shrubs and reduces losses from cicadas. Healthy plants tolerate feeding and egg laying better and recover faster after injuries. The key is to establish ongoing routines rather than one off actions.

Consistent mowing at appropriate heights supports turf vigor and reduces stress on underlying roots. Water deeply and infrequently to encourage deep rooting and drought resistance. Apply fertilizer according to soil test results to avoid excessive growth that cicadas can exploit.

Prune shrubs with care to minimize vulnerability during cicada season and avoid removing more than necessary. Use mulch rings around base to conserve soil moisture and reduce weed competition. Remove damaged branches promptly to prevent secondary infections.

Practical Measures for Lawn and Shrub Care

  • Maintain mowing heights at a level that promotes turf vigor

  • Water deeply and infrequently to encourage deep roots

  • Apply fertilizer according to soil test results

  • Prune shrubs conservatively and avoid heavy pruning during cicada season

  • Mulch around plant bases to conserve moisture and suppress weeds

  • Remove fallen cicadas and debris promptly to reduce pest pressure

Practical Measures for Lawn and Shrub Care

  • Maintain mowing heights at a level that promotes turf vigor

  • Water deeply and infrequently to encourage deep roots

  • Apply fertilizer according to soil test results

  • Prune shrubs conservatively and avoid heavy pruning during cicada season

  • Mulch around plant bases to conserve moisture and suppress weeds

  • Remove fallen cicadas and debris promptly to reduce pest pressure

Soil Health and Plant Resilience

Soil health is a foundation for plant resilience during cicada waves. Adding organic matter improves water retention and microbial activity which support root growth and recovery after injury. Soil testing helps tailor amendments to the site.

Include compost or well aged manure in the autumn or spring depending on site conditions. Use mycorrhizal fungi inoculants for trees and shrubs where approved and beneficial. Regular soil testing provides guidance on pH nutrient levels and micronutrients. Adjust practices based on test results to support root health and overall plant vigor. Keep records of soil amendments and plant responses to refine future seasons.

Healthy roots improve the plant capacity to recover after cicada feeding.

Protective Measures for Lawns Versus Shrubs

Protection strategies vary depending on the plant type and local cicada density. Lawns benefit from healthy turf function while shrubs may require protective coverings or targeted interventions. Choosing the right tactic depends on plant value and risk assessment.

For shrubs place breathable coverings over young plants during the peak emergence period and remove them when conditions permit. Do not leave coverings in place for extended periods as this can cause moisture buildup and disease. Netting in selected areas can reduce direct feeding while allowing light and air to reach the canopy.

Lawns can be protected by adjusting mowing and irrigation to reduce stress during cicada surges. Netting in large patches can be considered where practical and safe but it must be secured to avoid wind damage. Test netting on a small area first to assess ease of use and impact on light penetration.

Integrated Pest Management and When to Seek Professional Help

Integrated Pest Management is a coordinated approach that emphasizes non chemical methods first and uses chemicals only when necessary. This approach respects environmental resources and aims to protect beneficial insects and soil biology. It requires ongoing monitoring and documentation of results.

Before considering pesticides check the label for cicada specific and plant specific recommendations and ensure that restrictions are understood. Use pesticides only with proper application timing and protective equipment and never exceed labeled rates. Consult the agricultural extension office for region specific guidance.

Where cicada pressure is high or where valuable plants are at risk consider hiring a qualified professional. A professional can assess site conditions provide targeted treatments and implement protective measures that minimize risks to people pets and non target organisms.

Professional Assessment and Action Plan

  • Request an on site evaluation by a licensed horticulturist or pest control professional

  • Obtain a formal action plan that includes timing details and safety guidance

  • Confirm that pesticide choices are appropriate for the landscape and that label directions are followed

  • Discuss non chemical options and long term strategies for resilience

Environmental Considerations and Safety

Protecting human health pets and non target organisms is essential during cicada management. Use caution when applying any chemical products and follow all label instructions strictly. Select methods that minimize ecological disruption and support beneficial insect populations.

Consider weather water quality and soil impacts when choosing methods and times. Plan actions to avoid run off and to protect water resources. Keep children and pets away from treated areas until it is safe to return.

Maintain records of treatments and outcomes to improve future decisions. Review results after each cicada season and adjust plans for the next cycle.

Conclusion

Reducing cicada damage in lawns and shrubs requires a balanced plan that combines observation preparation and timely action. A thoughtful approach that emphasizes plant health cultural practices and integrated pest management yields sustainable landscapes. By applying the strategies outlined here homeowners can protect turf and ornamental plants while minimizing ecological impact.

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