Napa Valley has a unique plant growing along its waterways, especially along the Napa River. It is Dutchman’s pipevine (Aristolochia californica) and it is native to California. This plant, one of ...

Gardening for butterflies has been popular now for several decades. And one native Oklahoma butterfly that is interesting to attract is the pipevine swallowtail. This is a black butterfly with ...

A monarch butterfly lands on milkweed at Sun Valley Elementary School in San Rafael on July 29. (Sherry LaVars/Marin Independent Journal) Caterpillars eat milkweed leaves. (AP Photo/Herald Times ...