Ash Tree Sap Sucker Damage and Normal Bark Aging

Sap Sucker Holes

Three nail-like holes in a row, later enlarging with bark splitting = yellow-bellied sap sucker (woodpecker) feeding. Tree is compartmentalizing—bulge = healing callus.

Vertical Bark Cracks

Cracks on ash trunk = normal bark maturation. Young ash bark is smooth; aging bark becomes furrowed and cracked. Not a problem.

Care Recommendations

• No wound dressing needed.
• Light Merit spray on old holes if concerned.
• Fertilize both trees next spring: 10-10-10 at 1 lb/inch trunk diameter, before rain.

Maple Note

Autumn Blaze maple with borer: same fertilizer regimen. Skip 10-10-10 this year since you use spikes; switch to broadcast 10-10-10 next spring.