I live in Southern Illinois. I have a blue spruce that is about 15-16 years old. It was healthy and growing good until last year. I started noticing that it was losing its needles. I looked up into the tree and noticed that it doesn't appear to be regrowing the needles. Any idea what the problem could be?
Blue Spruce Losing Needles
Certified GKH Gardening Expert
Your tree may have developed a canker or the white pine weevils are a known insect that can cause damage to Blue Spruce.
I'm listing a few links for you that may give you more help in identifying the cause.
You may need a professional arborist to examine the tree for correct diagnosis.