Shelf Fungus and Termites on Large Tree: Decline Management

Conk Fungus and Termite Infestation in Mature Tree

Large front-yard tree has plate-shaped shelf fungus (conk) on trunk and major limbs, plus termites 2 inches deep in trunk and limbs.

Reality Check

• Shelf fungus = advanced internal decay. Tree is structurally compromised.
• Termites = secondary invaders in dead/dying wood.
• Pressure washing spreads spores and damages bark—don’t do it.

Palliative Measures

1. Remove dead/hazardous limbs.
2. Try Bayer Advanced Tree & Shrub soil drench—may kill termites if vascular system still transports.
3. Monitor for leaning, cracking, or increased dieback.

Tree will likely need removal soon. Consult an ISA-certified arborist for risk assessment.