Bracket Fungi on Tree Trunks: Don't Spray, Fertilize for Strength

Bracket fungi on tree trunks. Internet says cut and burn. Any spray to kill fungi?

Fungi Are Decomposers, Not Killers

Brackets are fruiting bodies of internal decay fungi. They feed on dead heartwood only—cannot invade living tissue. They indicate internal hollowing, not active killing.

No Spray Exists

Fungicides don't reach internal decay. Cutting brackets off doesn't stop the fungus.

Management: Tree Health

• Fertilize: 10-10-10 at 1 lb/inch DBH, scattered, watered in
• Monitor structure: Hollowing = wind failure risk
• Arborist assessment for hazard rating

10-10-10 Explained

10% N, 10% P, 10% K by weight. Available at nurseries/garden centers. 13-13-13 works at ¾ rate.

Tree can live decades with decay. Focus on vitality and safety.