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Western Gall Rust - Forest Health and Adaptation | |
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| |  {GFX-ESRDx-ForestHealth-WesternGallRust-Slide2.jpg}{GFX-ESRDx-ForestHealth-WesternGallRust-Slide3.jpg}Western gall rust (Endocronartium harknessii) is a common fungal disease of hard pines such as Jack and lodgepole pine. Airborne spores infect the green tissue of young shoots, causing the wood to swell into galls (globe-shaped clumps).
This disease generally affects young pines throughout the province.
Signs and Symptoms
Look for the following signs and symptoms of Western gall rust:
Branches/Twigs/Shoots
- Dieback
- Globular galls
- Powdery orange spores in the spring
Crown
- Fading green/yellow-orange or red brown
Foliage/Buds
- Fading green/yellow-orange or red-brown needles
Stem/Outer Bark
- Galls
- Powdery orange spores in the spring
Root Collar/Root
- Galls on root collar of young trees
Similar Damage
- Can be confused with blister rusts. Look for gall-like swellings.
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For more information about the content of this document, contact Devon Belanger.
This information published to the web on February 24, 2016.
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