California yampah
Perideridia californica
Last reviewed: October 2026
California yampah (Perideridia californica) is a perennial forb native to CA. It blooms in June, July, and August. The flowers draw small bees, flies, and beetles.
Toxicity unknown
California yampah (Perideridia californica) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.
Light
full sun
Water
medium
Size
18"–36" H × 8"–12" W
Bloom
Jun, Jul, Aug
Native to
CA
Pollinators
small bees, flies, beetles
Before you buy
Your city may pay you to plant this
Cities and water utilities offer rebates for replacing lawn with native and water-wise plants. We track 458 programs across 44 states, each with a link to the provider and the date we last checked it.
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Browse plants for this ecoregion
A slender perennial with finely divided leaves and flat-topped clusters of small white flowers atop tall stems, grown from an edible tuberous root and going dormant in summer.
Growing California yampah
Grow California yampah in full sun and medium water. Mature plants reach 18 to 36 inches tall and spread 8 to 12 inches wide.
Wildlife value
Host plant for anise swallowtail.
Umbel flowers attract a wide range of small pollinators, and the foliage is a larval host for anise swallowtail caterpillars.
Common questions
- How much sun does California yampah need?
- California yampah grows best in full sun conditions.
- When does California yampah bloom?
- California yampah blooms in June, July, and August.
- Where is California yampah native?
- California yampah (Perideridia californica) is native to CA, per the World Checklist of Vascular Plants (Kew).
- What butterflies or moths does California yampah host?
- California yampah is a larval host plant for anise swallowtail.
Native range data from the World Checklist of Vascular Plants (Kew). Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
If something looks wrong
Common plant problems, and what to check first
These come up on almost any plant. Each guide lists the likely causes in the order they are worth ruling out, with one thing to check before you act on any of them, and links to the source it came from.
- It is dying right after planting
- Leaves turning yellow
- Wilting even though I watered it
- Brown crispy leaf tips
- Bugs on the plant
Ready to grow California yampah? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.