Constant munching + sawdust + holes in old pine = pine sawyers. They infest dead/dying trees only. Check: needles turning brown? dropping? = tree dying. Causes: drought, herbicide, bark beetles. Sawyers arrive after. Tree won't recover once needles brown. No treatment for sawyers—they're secondary.
Saving a Poorly Planted Evergreen in Minnesota
Confirming Shortleaf Pine and Measuring DBH Correctly
Heavy Cone Production on Ponderosa Pine Indicates Stress
Managing Neighbor's Pine Tree Roots Encroaching Your Yard
Norfolk Island Pine Dropping Leaves: Light, Water, or Age?
Can a Norfolk Island Pine Be Planted Outdoors? Climate Requirements
Foothill Pine Decline: Bark Beetle Resin Flow and Terminal Diagnosis
Pine Tree Yellowing Needles and White Sudsy Substance: Insect Identification
Pine Tree Decline in Black Hills: Need On-Site Diagnosis
Loblolly Pine Decline: Soil Testing Is the First Step
Indoor Pine White Sticky Substance: Honeydew from Insects
Pine Tree Borer Holes and Moss: Bayer Systemic Treatment and Annual Prevention
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