Lichen Is Harmless; Fruit Tree Decline Stems from Water and Soil Issues

Lichen ≠ Problem

The gray-green patches on your cherry, apple, and willow are lichens—symbiotic organisms that simply use bark as a substrate. They don’t harm the tree.

The Real Issues

• Apple lost all leaves: Grass growing to the trunk blocks air/water. Clear a mulch ring (6″ from trunk to drip line).
• Cherry decline: Fungal leaf spots + incorrect watering (too much or too little). Apply fungicide, adjust irrigation.
• Willow bark damage: Red tentacles suggest a fungal canker from excess moisture. Improve drainage.

Universal Fix

Remove grass/weeds/mulch from root flares, water correctly, and treat active fungal infections. Healthy trees resist all these problems.