Top Dieback on 'Fat Albert' Colorado Blue Spruce

When the leader and upper new growth of a Colorado blue spruce ('Fat Albert') turns brown, wrinkles, and progresses downward, the cause can be insect borers, fungal canker, or environmental stress. Without a lab exam, definitive diagnosis is difficult.

Immediate Steps

1. Prune out dead tissue. Cut back to where green, healthy tissue begins—about 1–2 inches into live wood. Use sterilized tools.
2. Submit a sample. Contact your county agricultural extension office (often in the courthouse) to arrange a lab analysis of the affected stem. This identifies whether an insect or pathogen is involved.
3. Assess cultural conditions. Ensure the tree isn't drought-stressed, planted too deeply, or suffering from root girdling.

Prompt pruning and accurate diagnosis give the best chance to halt progression and preserve the tree's form.