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Cleveland Pear Trunk Damage: Borers or Disease?

12 Pears Planted, 4 Have Narrow Trunks with Deep Trenching

Illinois. 8 trees thriving, 4 have trunks eaten to near core. Owner applied spray coating for limb removal. Asks if "trench" is fungus that kills.

Answer

Kathy consults another expert: raising sap sugars via Atomic Grow controls insects/pathogens. Insecticides/oils weaken plants. Atomic Grow boosts defenses and saves trees.

Context

"Trench" likely refers to borer galleries. Standard advice: identify borer, use preventive trunk sprays, maintain vigor.

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