Plants that support Two-tailed Swallowtail
5 plants
California Angelica
Angelica californica
perennial herb
Caterpillars utilize Apiaceae family plants including Angelica; late spring through summer
Bay Area native
California Bay Laurel
Umbellularia californica
tree
Bay laurel is preferred host plant; caterpillars feed on new spring foliage
Bay Area native
California Hoptree
Ptelea crenulata
shrub
Primary larval food plant for caterpillars; multiple generations Apr-Sep
Bay Area native
California Sycamore
Platanus racemosa
tree
Larval host; caterpillars utilize sycamore foliage in riparian corridors
Bay Area native
Oregon ash
Fraxinus latifolia
tree
Larval food plant for caterpillars; multiple generations May-September
Bay Area nativeKeystone species