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Parsleyworm, aka Celeryworm, aka Carrot Caterpillar

Parsleyworm Control

Papilio polyxenes

Parsleyworm is also called the celeryworm or the carrot caterpillar. This is a caterpillar, not a worm and it is the larvae stage of the black swallowtail butterfly. The larvae at first resembles a bird dropping, black with a white saddle-shaped marking. As it matures, its appearance changes drastically. Full grown it is striking - green with black stripes and yellow spots. Common host plants include: parsley, parsnip, celery, carrots, and dill. They are found throughout the United States. Hand-picking is generally sufficient control however, if you must control them, using Bacillus thurengiensis kurstaki or Spinosad will do the job.

For more information please see our Caterpillars and Moths Control page.

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