Sawfly Larvae on Young Loblolly Pine: Minimal Threat

Single generation/year: No population buildup within season.
Low density: 2 trees/80 acres = negligible impact.
High natural mortality: Soil-dwelling pupae face predators/diseases.
No treatment needed: Hand-picking on 80 acres impractical; not warranted.

80-acre, 2-year-old loblolly plantation: 2 trees defoliated, sawfly larvae on one. Owner asks about threat level and control.

Low Risk Assessment

Expect minimal recurrence next year. Focus on plantation-scale health, not individual seedling pests.

Plant Diseases: Diagnosing and Treating Browning Fraser Firs and Cedar Trees; Pine Bark Beetles in Alabama: Prevention via Tree Vigor—Contact Extension for Local Advice; Pine Tree Holes in Rows: Sapsucker Woodpecker Damage; Spruce and Pine "Pine Worms": Myth and Free Forester Assessment; Sago Palm Yellowing: Not a Pine, Check for Nutrient or Rot Issues; Mugo Pine Sawfly: Recovery Possible, Don't Prune Infested Branches; Pine Needles vs. Native Grass: Rake or Keep?; Pine Cone Absence in Massachusetts: Not Necessarily a Problem; White Pine Blister Rust: Girdling Gall = Tree Doomed; Controlling Hibiscus Sawfly Larvae on Perennial Hibiscus

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