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

* 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.

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The Hemlock Pest Management Calendar

The Hemlock Pest Management Calendar gives approximate dates for pest emergence.

Other Resources

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This insect note has not been peer reviewed.


Professor and Extension Specialist
Entomology & Plant Pathology
Professor Emeritus
Entomology & Plant Pathology

Find more information at the following NC State Extension websites:

Publication date: Jan. 23, 2019
Revised: Sept. 27, 2019

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