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How to Manage Pests

Pests in Gardens and Landscapes

Tissue proliferation and ligno-tubers

Tissue proliferation and ligno-tubers are latent buds from which shoots sprout in response to stress. Galls or swellings form around the base of the trunk. Tissue proliferation and ligno-tubers are not harmful, but they may indicate stress or injury.

Solutions

Inspect plants for damage or stress. Provide proper cultural care.

Galling on trunk
Galling on trunk

Swelling
Swelling

Statewide IPM Program, Agriculture and Natural Resources, University of California
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