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Yellow-Necked Caterpillars on Blueberries: Treat with Spinosad or Bt

Large fuzzy black caterpillars with yellow stripes that rear into a "C" shape when disturbed are yellow-necked caterpillars. They can defoliate blueberries but rarely kill plants. Spray with Green Light Spinosad or any Bacillus thuringiensis (Bt) product for effective control.

About Gardening: Caterpillars and Aphids on Petunias: Hand-Picking and Spinosad; Redheaded Pine Sawfly: Identification and Control on Mugo Pine; Phalaenopsis Spike Tip Yellowing After Cutting: What to Do; Caterpillars on Live Oak: Yellownecked or Orangestriped Oakworm; Caterpillars or Flea Beetles on Coleus? Organic Controls That Work; Yellow Perennials for Zone 4 Gardens Near Minneapolis; Sunflower Colors Beyond Yellow: A Complete Spectrum; Yellow Spring Lawn in Central PA: Diagnosing the Cause; Yellow-Necked Caterpillars on Blueberries: Early Bt Control; Yellow-Necked Caterpillars on Blueberries: Control with Bt or Spinosad

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