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California buttercup

Ranunculus californicus

California buttercup
Photo: Calibas, CC BY-SA 3.0

California buttercup is a perennial wildflower native to California and nearby parts of Oregon and Baja California, growing up to about 70 cm with bright yellow, glossy flowers on leafless stems. It is grown in native plant gardens and does best with sun and well-drained soil.

Family
Ranunculaceae (Buttercup family)
Grows as
Perennial
Light
Full sun, Part shade
Water
Water moderately while establishing, then allow the soil to dry between waterings; it is adapted to a dry summer.
Soil
Well-drained soil, loam or sandy loam.
Temperature
Hardy in cool to mild temperate conditions; protect from hard freezes.
How easy
Easy
Safety
Toxic: Contains protoanemonin and related compounds in the sap and leaves that can irritate the skin and mouth and cause stomach upset if eaten.. Toxic to cats and dogs (ASPCA).
Native range
SW. Oregon to Mexico (Baja California Norte)
Climate
temperate

About

Ranunculus californicus, commonly known as the California buttercup, is a flowering plant of the buttercup family Ranunculaceae. It is a native of California, where it is common in many habitats, including chaparral and woodlands.

Its distribution extends across many habitats of California, north into Oregon and south into Baja California. Its reported locations include the islands between British Columbia and Washington, the Channel Islands of California, and the Sierra Nevada.

How to grow it

Ranunculus californicus is cultivated as an ornamental plant, for use in native plant gardens.

Other Ranunculus plants

Littleleaf buttercup · Aconite-leaf buttercup · Meadow buttercup · White water crowfoot · Asian Buttercup · Brackish Water-crowfoot · St. Anthony's turnip · Ranunculus calandrinioides · Greater creeping spearwort · Glacier buttercup · Ranunculus gramineus · Ivy buttercup

Text excerpted from the Wikipedia article Ranunculus californicus by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.

Pet safety from the ASPCA toxic and non-toxic plant lists.

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