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Pine Tree Borer Holes and Moss: Bayer Systemic Treatment and Annual Prevention

Identifying Borer Damage

Thousands of tiny round holes + "hook" shaped leader (crooked top) = pine borers (likely Ips engraver beetles or Monochamus sawyers). Holes are exit holes; moss grows on dead wood.

Immediate Treatment

Bayer Advanced Tree & Shrub Insect Control (imidacloprid) soil drench—kills larvae inside, protects 1 year.
Apply to all pines on property—borers move between trees.

Annual Prevention

Reapply each spring. Borers overwinter in soil/bark; continuous protection breaks cycle.

Why Not Sprays?

Contact sprays don't reach larvae under bark. Systemic is only effective method for established infestation.

Tree Removal

Dead pines (no green) should be removed promptly—breed more beetles, fall hazard.

Plant Diseases: Pine Bark Beetles in Alabama: Prevention via Tree Vigor—Contact Extension for Local Advice; Willow Tree Slime Flux: Bacterial Wetwood Diagnosis; Pine Tree Holes in Rows: Sapsucker Woodpecker Damage; Cedar Spruce Sap Sucker Damage: Bird-Caused Holes Misidentified as Borers; Protecting Fruit Trees from Squirrels: Exclusion and Population Management; Sapsucker Woodpecker Damage on Pine: Identification and Simple Control; Pine Cone Absence in Massachusetts: Not Necessarily a Problem; Identifying a Tree with Round Cones & Tiny Needles: Bald Cypress; Perfectly Round Holes in Pine Trees: Sapsucker Damage, Not Carpenter Bees; Identifying a Pine Tree from a Photo

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