Bumps on Aspen - Knowledgebase Question

Golden, CO
Question by bmcdowel
March 19, 1999
Most of my younger aspen trees have bumps at many of the leaf bud sites on the branches. What is causing this? What can I do to correct it? (Please, oh please, don't tell me I have to cut my beautiful little trees down!)

Answer from NGA
March 19, 1999


There's nothing you need to do about the bumps on the branches of your Aspen trees. It's a natural development, known in scientific circles as 'enlarged lenticels'. As the trees mature the bumps will become orange colored ovals. Just part of the beauty of Aspen trees.

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