Madrone: Leaf gall

categories: Madrone Madrone Diseases Ornamental trees Ornamentals

revision date: 2022-11-23 04:46

Madrone leaf gall (blisters) on leaves.
Madrone leaf gall (blisters) on leaves
Photo by: R.S. Byther


Leaf gall in madrone is caused by a fungus that infects leaf tissue. From late spring to mid-summer, fruiting bodies emerge from the leaf tissue, rupture the cuticle, and release their spores. Leaves become enlarged, discolored, and may exhibit a white, velvety appearance on one side. Spores in turn germinate on wet surfaces and may cause new infections of young, late-developing stems and leaves.

Management Options

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

Non-chemical Management

Select non-chemical management options as your first choice!

  • Hand pick galls or prune localized infections before sporulation in summer.

Chemical Management

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

  • None recommended

Additional Image