Mulch-Induced Tree Decline: Green Bark Fungus and Aeration Rescue

Mulch Too Deep = Fungus

Dogwood died, Bradford pears turning green at bark after landscaper mulched all trees = mulch holding excess moisture → fungal growth on bark → pathogen entry.

Immediate Fixes

• Rake mulch back 12+ inches from trunks.
• Spread mulch thin (1–2 inches max).
• Aerate soil at base with rod 12" deep—don't refill holes.

Landscaper Error

Deep mulch against trunk is a known killer. "Green on bark = fungus." Orthenex spray won't fix root cause.