Ask a Question forum→Tree Disease

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Burnaby, BC
May 20, 2020 4:09 PM CST
Hello, I am hoping someone can help identify what is on these Western Hemlock trees. I have seen a couple hemlocks in my area showing these woody bumps all over the bark. They come off easily and feel hard and woody to the touch.

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Name: one-eye-luke US.Vet.
Texas (Zone 8a)
Quitter's never Win
Hummingbirder Birds Organic Gardener Dog Lover Cat Lover
May 21, 2020 2:06 AM CST
Black knot is a widespread fungal disease. Insects and plant diseases use the galls as an entry to the tree. The disease cycle starts when spores are released from established knots where the fungus overwinters.
NOT A EXPERT! Just a grow worm! I never met a plant I didn’t love.✌

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