This information was developed for North Carolina and may not apply to other areas.

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Table Legend

* Degree of importance of pest: I = Important pest, high probability of occurrence, II = Treat as needed: III = Occasional pest, treat when detected.
** Number of applications needed for most effective control. It is usually best to wait 10 to 14 days between applications in cool weather and 7 to 10 days between applications in warm weather.
S = Spray application; R = Rouge out.

The Leyland Cypress Pest Management Calendar gives approximate dates of pest emergence.

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The Leyland Cypress Pest Management Calendar gives approximate dates of pest emergence.

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• Armored Scale Identification and Management on Ornamental Plants. Frank, S. 2022 (revised)10. Entomology Insect Notes, NC State Extension Publications.
• Bagworms in Ornamental Landscapes. Frank, S. and J. Baker. 2019. (revised) Entomology Insect Notes, NC State Extension Publications.
• Disease of Leyland Cypress. Benson, M. et al. 2013. Ornamental Disease Information, NC State Extension Publications.
• Southern Red Mite and Spruce Spider Mite. Frank, S. et al. 2019. (revised) Entomology Insect Notes, NC State Extension Publications.
• Insect and Related Pests of Shrubs. Baker, J. R. ed. 1980. NC Agricultural Extension Service publication AG-189. 199 pp.
• North Carolina Agricultural Chemicals Manual
• Extension Plant Pathology Publications and Factsheets
• Horticultural Science Publications
• Search for more information on insects from NC State Extension

For assistance with a specific problem, contact your local N.C. Cooperative Extension Center.

This Insect Note has not been peer reviewed.

* Degree of importance of pest: I=Important pest, high probability of occurrence, II=Treat as needed: III=Occasional pest, treat when detected. ↲

** Number of applications needed for most effective control. It is usually best to wait 10 to 14 days between applications in cool weather and 7 to 10 days between applications in warm weather. ↲