Fungal growths on trunk = advanced internal rot. Tree rocks = failed roots.
Cut it down. Sweet cherries rarely fruit in the South anyway. Even sour cherries struggle except in mountains.

Weeping Cherry Gummosis: Borer Management and Fruit Production
Cherry Tree Gummosis: Peach Tree Borer Management
Mature Weeping Cherry Decline: Sap, Borers, Cankers, and Winter Injury
Diagnosing Pine Tree Decline in Southern Illinois
Diagnosing a Non-Flowering Cherry Tree: Is It Dead?
Cherry Tree Growth Rate and Fast-Growing Alternatives
Saving an Ash Tree After Construction Root Damage
Cherry Tree Decline from Soil Grade Change
Locust Tree Dieback After Heat Wave: Earwigs, Root Check, and Recovery
Easter Lily (Lilium longiflorum) Not Blooming After Move: Dormancy & Light Needed
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