North America Native Plant

California Blackberry

Botanical name: Rubus ursinus ursinus var. sirbenus

USDA symbol: RUURS

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Synonyms: Rubus sirbenus L.H. Bailey (RUSI3)   

California Blackberry: A Native Gem for Your Garden If you’re looking to add a touch of California’s wild beauty to your landscape, the California blackberry (Rubus ursinus ursinus var. sirbenus) might just be the perfect native addition you’ve been searching for. This charming perennial shrub brings the authentic flavor of ...

Rare plant alert!

Region: Conservation status by state

Status: S5T3?: Status is uncertain but is somewhere between the following rankings: Inexact rank: ⚘ 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. ⚘ 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 Blackberry: A Native Gem for Your Garden

If you’re looking to add a touch of California’s wild beauty to your landscape, the California blackberry (Rubus ursinus ursinus var. sirbenus) might just be the perfect native addition you’ve been searching for. This charming perennial shrub brings the authentic flavor of the Golden State’s natural heritage right to your backyard.

Meet Your New Garden Friend

The California blackberry is a delightfully compact native shrub that won’t overwhelm your space. This low-growing beauty typically stays under 1.5 feet tall and never exceeds 3 feet at maturity, making it an excellent choice for gardeners who want native character without the commitment of larger shrubs.

You might also see this plant referenced by its synonym, Rubus sirbenus L.H. Bailey, in older gardening references or botanical texts.

Where Does It Call Home?

This particular variety of California blackberry is native to the lower 48 states, with its natural range centered in California. It’s a true California native, evolved to thrive in the state’s unique climate and growing conditions.

Why Your Garden Will Thank You

There are several compelling reasons to consider adding this native beauty to your landscape:

  • Authentic native character: You’ll be supporting local ecosystems and preserving California’s botanical heritage
  • Perfect size: Its compact growth habit makes it ideal for smaller gardens or as a groundcover
  • Low maintenance: As a native plant, it’s naturally adapted to local conditions
  • Perennial reliability: Once established, you can count on it returning year after year

A Word About Responsible Growing

Before you rush out to plant, there’s something important to consider. This variety has an undefined conservation status, which means its population stability isn’t entirely clear. If you decide to grow California blackberry, please source your plants responsibly from reputable native plant nurseries rather than collecting from the wild.

Design Ideas and Garden Placement

The California blackberry’s low-growing, spreading nature makes it wonderfully versatile in landscape design. Consider using it as:

  • A native groundcover for slopes or areas where you want to prevent erosion
  • An understory plant in native woodland gardens
  • A naturalistic border along pathways
  • Part of a California native plant collection

Growing Your California Blackberry

While specific growing requirements for this particular variety can vary, most California blackberries appreciate conditions that mirror their natural habitat. Unfortunately, detailed growing information for this specific variety is limited, so you’ll want to consult with local native plant experts or extension services for the most accurate guidance.

Generally speaking, California natives often prefer well-draining soil and are adapted to the state’s Mediterranean climate patterns. Starting with healthy nursery plants and giving them time to establish will set you up for success.

The Bottom Line

The California blackberry offers gardeners a chance to connect with their local landscape heritage while adding a charming, manageable native shrub to their gardens. While information about this specific variety is somewhat limited, its native status and compact size make it an intriguing option for native plant enthusiasts.

Just remember to source responsibly, be patient during establishment, and don’t hesitate to reach out to local native plant societies or master gardeners for variety-specific growing tips. Your garden—and California’s native ecosystems—will be better for it!

California Blackberry

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

Rosales

Family

Rosaceae Juss. - Rose family

Genus

Rubus L. - blackberry

Species

Rubus ursinus Cham. & Schltdl. - California blackberry

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