North America Native Plant

California Woodsorrel

Botanical name: Oxalis albicans californica

USDA symbol: OXALC

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Synonyms: Oxalis californica (Abrams) R. Knuth (OXCA)   

California Woodsorrel: A Charming Native Ground Cover for Golden State Gardens If you’re looking to add a touch of delicate beauty to your California garden while supporting local ecosystems, California woodsorrel (Oxalis albicans californica) might just be the perfect native plant for you. This petite perennial brings subtle charm and ...

Rare plant alert!

Region: Conservation status by state

Status: S5T3T4: Status is uncertain but is somewhere between the following rankings: Subspecies or variety is vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals. ⚘ Subspecies or varieties is apparently secure: Uncommon but not rare, and usually widespread. Possibly cause for longterm concern. Typically more than 100 occurrences in the region or more than 10,000 individuals ⚘ Secure: At very low or no risk of extinction in the jurisdiction due to a very extensive range, abundant populations or occurrences, with little to no concern from declines or threats. ⚘

California Woodsorrel: A Charming Native Ground Cover for Golden State Gardens

If you’re looking to add a touch of delicate beauty to your California garden while supporting local ecosystems, California woodsorrel (Oxalis albicans californica) might just be the perfect native plant for you. This petite perennial brings subtle charm and ecological value to gardens throughout the Golden State.

What is California Woodsorrel?

California woodsorrel is a native perennial forb that belongs to the wood sorrel family. As a forb, it’s essentially an herbaceous flowering plant that lacks woody stems – think of it as nature’s way of creating living carpet. This little beauty is exclusively native to California, making it a true Golden State original.

You might occasionally see this plant listed under its synonym, Oxalis californica, but rest assured – it’s the same lovely species that has been gracing California landscapes for centuries.

Where Does It Grow?

California woodsorrel is endemic to California, meaning you won’t find it growing wild anywhere else in the world. This makes it extra special for native plant enthusiasts who want to cultivate truly local flora in their gardens.

Why Choose California Woodsorrel for Your Garden?

There are several compelling reasons to consider this native gem:

  • Authentic California native: Supporting true local biodiversity
  • Low maintenance: Once established, native plants typically require less water and care
  • Ground cover potential: Its forb growth habit makes it excellent for filling in garden spaces
  • Year-round interest: As a perennial, it provides consistent garden structure

A Word About Rarity

Before you rush out to find California woodsorrel, there’s something important to know. This species has a conservation status that suggests it may be somewhat uncommon in parts of its range. If you’re interested in growing this plant, make sure to source it responsibly from reputable native plant nurseries that propagate their stock rather than wild-collecting.

Garden Design and Landscape Use

California woodsorrel works beautifully in several garden settings:

  • Native plant gardens: Perfect for authentic California flora displays
  • Rock gardens: Its delicate form complements rocky landscapes
  • Woodland understory: Thrives in partially shaded natural areas
  • Ground cover applications: Fills in spaces between larger plants

Growing Conditions and Care

As a California native, this woodsorrel is adapted to the state’s Mediterranean climate patterns. While specific growing requirements for this particular species aren’t widely documented, most California Oxalis species prefer:

  • Well-draining soil
  • Partial shade to filtered sunlight
  • Moderate water during establishment, then reduced watering
  • Protection from harsh afternoon sun

Getting Started

If you’ve decided that California woodsorrel is right for your garden, here’s how to proceed:

  • Source responsibly: Contact specialized native plant nurseries in California
  • Plan your placement: Choose a spot with morning sun and afternoon shade
  • Prepare the soil: Ensure good drainage to prevent root rot
  • Be patient: Native plants often take time to establish but reward you with longevity

The Bottom Line

California woodsorrel represents the kind of plant that makes native gardening so rewarding – it’s authentic, adapted, and contributes to local biodiversity. While it may require a bit more effort to source due to its rarity, gardeners who successfully grow this species can take pride in nurturing a true California original.

Remember, the best native gardens are built plant by plant, with species chosen thoughtfully for their ecological value and garden performance. California woodsorrel might just be the perfect addition to your native plant collection, bringing a piece of California’s natural heritage right to your backyard.

California Woodsorrel

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Rosidae

Order

Geraniales

Family

Oxalidaceae R. Br. - Wood-Sorrel family

Genus

Oxalis L. - woodsorrel

Species

Oxalis albicans Kunth - radishroot woodsorrel

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA