Cones take 2 years to mature. Dead trees retain old cones for years. They don't indicate current life.
Remove tree. Dead pines in Phoenix heat become brittle, snap hazards. Bark beetles emerge and attack neighbors.
Bagworm Control on Pine Trees: Systemic Soil Treatment
Diagnosing Pine Needle Browning in Oregon
Diagnosing and Managing Needle Cast in Loblolly Pine Plantations
Suppressed White Pines: Transplant to Relieve Competition
Pine Needle Drop: Normal Seasonal Shedding or Cause for Concern?
40-Year Blue Spruce: Needle Mulch, Fire Risk & Dead Inner Branches
Pine Tree with Borer Holes and Browning Tips: Likely Bark Beetles—Act Fast
Assessing and Managing a Leaning West Indies Mahogany
Houston Pine Sudden Death: Bark Beetle Diagnosis and Shumard Oak Replacement
80-Ft Pine Losing Needles in Summer: Normal Seasonal Shed
Pine Tree Roots Cut for Pool: Is It Dying?
Pine Needles vs. Native Grass: Rake or Keep?
Conifer Recovery After Deer Browsing: Needle Regrowth Expected
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