The rare California Pipevine Swallowtail, native to San Francisco, saw its numbers decline drastically, possibly from development and invasive plants affecting its food source.

Without the pipevine sprouting around the city, the California Pipevine Swallowtail butterfly has also almost disappeared. Wong is on a mission to bring the butterfly population back.

The Pipevine Caterpillar Thrives in a Toxic Love Triangle The devilish caterpillars of the pipevine swallowtail butterfly *devour* the California pipevine, never mind that the plant is trying to ...

The explosion of wildflowers throughout March and April ushers in a favorite Sonoma County phenomenon - the emergence of the pipevine swallowtail butterflies.

Use this butterfly ID cheat sheet to help identify the butterflies in your backyard. Learn how to attract pipevine swallowtail butterflies to your garden.

The California Pipevine Swallowtail butterflies used to flutter about San Francisco aplenty, but their populations declined in the 20th century as more areas were developed. Now in the early 21st ...

A local subspecies of the California pipevine swallowtail butterfly rests on the hand of Marin garden designer Hilde Simon. (Courtesy of Hilde Simon) ...

The devilish caterpillars of the pipevine swallowtail butterfly *devour* the California pipevine, never mind that the plant is trying to poison them. Their butterfly moms don’t pollinate the pipevine ...