Recent Examples of black swallowtail from the Web
The plant is the food source for the particular species of caterpillar, such as milkweed for monarchs and parsley plants for black swallowtail caterpillars.
Closer investigation showed them to be black swallowtail butterfly larvae, also known as parsley worms, which feed on the foliage of umbels — plants in the carrot/parsley/dill/fennel family with short flower stalks that spread from a common point.
Plant dill, fennel and parsley and expect black swallowtails to find the plants for egg laying, even if the plants are growing in containers.
The parsley worm will munch away at your parsley, dill and fennel, but then turn into the beautiful black swallowtail.
Vividly striped caterpillars feeding on parsley, carrots, Queen Anne’s lace or dill transform to black swallowtail butterflies after metamorphosis.
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