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What is causing the small lumpy growths on the branches of my Spruce tree?

Our Advice:

These are caused by the feeding of the Pineapple gall adelgid at type of aphid. They can seriously weaken the tree, making it vulnerable to other pests and diseases. To control this pest you can spray your tree with Bug Clear Ultra from Scott's or SB Plant invigourator in in mid-spring, and again in late-summer or early-autumn.

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