This information was developed for North Carolina and may not be applicable for other area. Please click on the thumbnail to enlarge it, if necesary.

The Rhododendron Pest Management Calendar give approximate dates for pest emergence.

×

The Rhododendron Pest Management Calendar give approximate dates for pest emergence.

Print Image

* 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.

G = Granular (or drench) application; P = Prune out infested stem; S=Spray application.

• Azalea Stem Borer. Frank, S. and J. R. Baker. 1994. Entomology Insect Notes, NC State Extension Publications.
• Black Vine Weevil. Frank, S. et al. 2003. Entomology Insect Notes, NC State Extension Publications.
• Caterpillars That Feed on Trees and Shrubs. Frank, S. and S. Bambara. 2009. Entomology Insect Notes, NC State Extension Publications.
• Rhododendron Borer. Baker, J. R. 2017. PDIC Factsheets, NC State Extension Publications.
• Rhododendron Gall Midge. Baker, J. R. 2013. PDIC Factsheets, NC State Extension Publications.
• Lace Bugs. Frank, S. 2016. Entomology Insect Notes, NC State Extension Publications.
• Twobanded Japanese Weevil. Frank, S. and J. R. Baker. 1994. 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 Cooperative Extension Center.

This Insect Note has not been peer reviewed.