WSU Extension

Hortsense

Caption: Madrone leafminer and shieldbearer damage
Photo by: S.J. Collman
  
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Madrone : Madrone leafminer
(revision date: 6/24/2015)


Biology
Larvae of this leaf and twig mining moth blaze sinuous, serpentine mines across the upper sides of leaves. Since leafminers usually cause only minor damage, they do not affect the long-term health of the tree.
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


None recommended.

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Caption: Madrone leafminer and shieldbearer damage
Photo by: S.J. Collman