Reviving Mature Maples After Ice Storm Damage

Likely Cause

Three 35-year-old maples show severe thinning and dead branches. An ice storm years ago (with leaves still on) likely caused structural damage and stress, initiating a slow decline. The grey/green growth is probably lichens, a sign of thin canopy, not a disease.

Recovery Strategy

Fertilize each tree with 10-10-10 at 1 pound per inch of trunk diameter, scattered to the drip line and watered in (or apply before rain). This boosts root health and canopy density, helping the tree outcompete lichens and recover vigor.

Expectations

Improvement takes time. Monitor for new growth next spring. If large limbs continue to die, consult an arborist for structural assessment.