A tip for attracting and finding Black Swallowtail caterpillars is to include their host plants (fennel, dill, parsley) in your garden. The female Black Swallowtail butterflies lay their eggs on the host plant and the caterpillars eat their leaves.
Finding Black Swallowtail Caterpillars
Watch the video to see how you can find these caterpillars on fennel.
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