Obscure Scale on Oak: Oil Sprays and Monitoring

Obscure scale weakens oaks. Spray horticultural oil thoroughly in March, repeat in 4 weeks, repeat next spring. Likely came on nursery stock.

See Obscure Scale.

About Gardening: Tarmac Around Oak Trees Causes Root Suffocation and Bark Loss; Storing Acorns for Planting: Keep Them Cool and Dry; Oak Tree Fungus Management: Drainage and Cultural Controls; Oaks Falling with Internal Decay: Hazard Tree Assessment Needed; Oak Thinning for Acorn Production: Wildlife Management Guide; All About Oak Trees: Types, History, Uses, and Care; Oak Bark Shedding: Growth, Fungus, or Squirrels?; Identifying and Managing Oak Tree Diseases: Sudden Oak Death vs. Slime Flux; Removing Hedge Bushes Under Oaks Without Harming Trees; Oak Leaf Miner Damage: Identification and Cleanup

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