Caution
This information was developed for North Carolina and may not apply to other areas.
Please click on the thumbnail to enlarge a concise version of the table.
Jump to the table legend.
See section 4 for an accessible version of the table in HTML format.
The Boxwood Pest Management Calendar gives approximate dates for pest appearance.
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.
D = drench; G = granular; S = spray application.
Other Resources
- Armored Scale Identification and Management on Ornamental Plants. Frank, S. 2018. Entomology Insect Notes, NC State Extension Publications.
- Boxwood Leafminer. Frank, S. et al. 2011. Entomology Insect Notes, NC State Extension Publications.
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Boxwood Psyllid. Baker, J. R. 2013. PDIC Factsheets, NC State Extension Publications.
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Boxwood Mite. Baker. J. R. 2012. PDIC Factsheets, NC State Extension Publications.
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Citrus Flatid Planthopper. J. R. Baker. PDIC Factsheets, NC State Extension Publications.
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Indian Wax Scale. Frank, S. and J. R. Baker. 2018. 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.
- Mealybugs. Frank, S. and J. R. Baker. 2018. Entomology Insect Notes, NC State Extension Publications.
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Twospotted Spider Mites on Landscape Plants. Frank, S. 2018. Entomology Insect Notes, NC State Extension Publications.
- North Carolina Agricultural Chemicals Manual
- Extension Plant Pathology Publications and Factsheets
- Horticultural Science Publications
- Search for more information on insects from NC State Extension
Find your local N.C.Cooperative Extension Center
This Insect Note has not been peer reviewed.
Section 4
| Pests | Degree of Importance of Pest | Number of applications needed for most effective control* | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| boxwood leafminer | Important pest, high probability of occurrence | 2 | spray application | spray application | spray application | |||||||||
| boxwood psyllid | Treat as needed | 2 | spray application | spray application | ||||||||||
| boxwood mite | Treat as needed | 2 | spray application | spray application | spray application | spray application | ||||||||
| flatid planthopper | Occasional pest, treat when detected | 1 | spray application | spray application | spray application | spray application | ||||||||
| Indian wax scale | Occasional pest, treat when detected | 1 | spray application | |||||||||||
| mealybugs | Occasional pest, treat when detected | 3 | spray application | spray application | spray application | spray application | ||||||||
| scales, armored | Occasional pest, treat when detected | 2 | spray application | spray application | spray application | spray application | ||||||||
| twospotted spider mite | Treat as needed | 2 | spray application | spray application | spray application | spray application |
*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. ↲
Publication date: Oct. 5, 2018
Revised: Sept. 11, 2019
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