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Madrone
Disease
Collar rot (Phytophthora)
Leaf blight
Leaf gall
Leaf spot
Madrone canker
Insect
Madrone leafminer
Shield bearer
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Caption: Madrone leafminer and shieldbearer damage
Photo by: S.J. Collman
Madrone : Shield bearer
(revision date: 6/24/2015)
Use Integrated Pest Management (IPM) for successful plant problem management.
Biology
Shield bearers are moth larvae that mine out elliptical pupal chambers on the leaves. When pupal cells drop off, "shot holes" or small "windows" are observed on the leaves. Shield bearers usually cause only minor damage.
Management Options
Non-Chemical Management
Natural predators may help control populations. Encourage predators such as green lacewings and spiders.
Select non-chemical management options as your first choice!
Chemical Management
IMPORTANT:
Visit Home and Garden Fact Sheets for more information on using pesticides
None recommended.
Images
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Caption: Madrone leafminer and shieldbearer damage
Photo by: S.J. Collman
Caption: Madrone shield bearer damage
Photo by: A.L. Antonelli
