#cooley spruce gall adelgid
#cooley spruce gall adelgid1 post
Plant Health Care6 min read
Why Does My Blue Spruce Have Pineapple Galls? Cooley Spruce Gall Adelgid
Droopy brown tips on a Colorado blue spruce in Durham are usually not tip blight. They are last spring's Cooley spruce gall adelgid — pineapple-shaped galls at the shoot tips. I had not clocked this one here before. Here's the cycle, how to tell it from Eastern spruce gall, and why spraying a brown gall in September is a waste.
September 6, 2026
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