Spruce trees should be full, green, and vibrant in your yard and landscaping. There are many problems that could lead to damage, including fungal diseases like rhizosphaera needle cast.

DNR Many homeowners in northern Minnesota are asking the questions: Are my spruce trees dying? Should I be spraying something on them to help?  Your spruce trees are not dying and ...

"Our research seeks to curb this disease unravelling the molecular defence mechanism of Norway spruce against ... prevents the fungus from spreading throughout the rest of the tree.