Q.blue spruce losing needles
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?
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.
https://www.gardeningknowhow.com/ornamental/trees/colorado-blue-spruce/care-for-colorado-spruce.htm
https://www.extension.iastate.edu/harrison/news/common-diseases-blue-spruce
https://www.gardeningknowhow.com/ornamental/trees/tgen/cankers-on-trees.htm
