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White Pine Sap Blobs with Holes: Bark Beetles—Spray Trunk Now

Diagnosis

Sap blobs with central holes on lower 3 ft of trunk = bark beetle activity (likely Ips or similar).

Treatment

Spray trunk as high as reachable with bark beetle insecticide (e.g., Onyx). Buy at local nursery/garden center. Early intervention can save the tree if infestation is light.

Conifers: Transplant Shock in Oversized White Pines: Root Stimulation?; Resolving White Fungal Growth on Pine Trees Caused by Overwatering; Thinning White Pine: Fertilization for Needle Density; Transplanting White Pine into Heavy Clay: Drainage Critical; Sapsucker Woodpecker Damage on Pine: Identification and Simple Control; Suppressed White Pines: Transplant to Relieve Competition; White Pine "Worms" in Maine: Pine Sawyers, Not the Killers; White Pine vs. Red Pine: Identification and Commercial Value; Transplanting White Pine vs. Planting New: Stump Site Preparation; White Pine Decline: How Landscape Fabric Can Cause Needle Drop and Browning

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