Pipevine Swallowtail Pipevine swallowtails are found throughout the eastern U.S. and through the southwest to California. They host on pipevines ( Aristolochia sp), as their name indicates.

The fuzzy green buds are already swelling on my Dutchman's pipe, one of those reminders that California grows in the winter, too. I planted it several years ago in the fond hope of attracting the ...

We're proud to announce that our California pipevine has finally bloomed, after years of biding its time. The meerschaum-shaped flowers of Aristolochia californica are one of those harbingers of ...

The California pipevine swallowtail, native to San Francisco, saw its population decline drastically over the years. But Tim Wong, also known as the "butterfly whisperer," has led the effort to ...

For centuries, the California pipevine swallowtail — or, Battus philenor hirsuta — called San Francisco home. As development increased in the early 20th century, the butterfly slowly began to ...

Pipevine swallowtail butterflies, especially, employ some pretty mind-boggling tricks during their short lives. Take their caterpillar host plant, for example.

Question: In a May 30, 2008 question regarding the toxicity of certain Aristolochia species to pipevine swallowtail larvae, I had heard the same from at a talk from the curator of the Cockrell ...

Not every pipevine is an acceptable food choice and, unfortunately, the one species of pipevine that is most commonly sold in nurseries is deadly to the caterpillars of the pipevine swallowtail.