Perideridia kelloggii

Perideridia kelloggii




  • Herbaceous perennial that grows from 2 to about 5 feet tall
  • The most common Yampah in the Bay Area
  • Grows in open grasslands and serpentine outcrops
  • Grows in full or partial sun but is taller in full sun
  • Small white flowers appear in mid-summer
  • Prized by butterfly gardeners as a host plant for the Anise Swallowtail
  • The green caterpillars are not easy to spot as they are the same color as the stalks and the leaves
  • Found in Molate, Flatlands, Bay Hills, Diablo, Hamilton, and Valley sections

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