Madrone: Shield bearer

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

Use Integrated Pest Management (IPM) for successful plant problem management.

Non-chemical Management

Select non-chemical management options as your first choice!

• Natural predators may help control populations. Encourage predators such as green lacewings and spiders.

Chemical Management

IMPORTANT: Visit Home and Garden Fact Sheets for more information on using pesticides.

• None recommended

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