North America Native Plant

California Barley

Botanical name: Hordeum brachyantherum californicum

USDA symbol: HOBRC2

Life cycle: perennial

Habit: grass

Native status: Native to the lower 48 states  

Synonyms: Critesion californicum (Covas & Stebbins) N. Jacobsen & Seberg (CRCA17)  âš˜  Hordeum californicum Covas & Stebbins (HOCA2)   

California Barley: A Hardy Native Grass for Water-Wise Gardens Looking for a low-maintenance native grass that can handle drought and poor soils? Meet California barley (Hordeum brachyantherum californicum), a resilient perennial that’s perfectly adapted to western landscapes. This unassuming grass might not win any beauty contests, but it’s a workhorse ...

California Barley: A Hardy Native Grass for Water-Wise Gardens

Looking for a low-maintenance native grass that can handle drought and poor soils? Meet California barley (Hordeum brachyantherum californicum), a resilient perennial that’s perfectly adapted to western landscapes. This unassuming grass might not win any beauty contests, but it’s a workhorse that deserves a spot in native and water-wise gardens.

What Is California Barley?

California barley is a native perennial grass that grows throughout the western United States. Despite its common name, this isn’t the barley you’d find in your breakfast cereal – it’s a wild relative that has adapted to survive in some pretty tough conditions. This bunch grass typically reaches about 1.6 feet tall and forms clumps rather than spreading aggressively.

Where Does It Grow Naturally?

California barley calls the western states home, naturally occurring in California, Nevada, and Oregon. It’s perfectly adapted to the Mediterranean and semi-arid climates of these regions, making it an excellent choice for gardeners looking to work with their local ecosystem rather than against it.

Why Consider California Barley for Your Garden?

Here’s where this humble grass really shines:

  • Water-wise champion: Once established, it has medium drought tolerance and low moisture requirements
  • Soil flexible: Adapts to coarse, medium, and fine-textured soils
  • Low maintenance: Requires minimal fertility and care once established
  • Fire resilient: High fire tolerance makes it suitable for fire-prone areas
  • Native benefits: Supports local ecosystems and wildlife

Garden Design Ideas

California barley isn’t a showstopper, but it’s incredibly useful in the right settings. Consider it for:

  • Native plant gardens and restoration projects
  • Erosion control on slopes
  • Naturalized meadow areas
  • Water-wise landscaping
  • Background plantings where you need texture without drama

Its erect, bunching growth habit and medium-textured foliage provide subtle structure, while its green color offers a calming backdrop for more colorful natives.

Growing Conditions and Care

California barley is refreshingly easy to please:

  • Climate: Thrives in USDA zones 6-10 (minimum temperature tolerance around -3°F)
  • Sunlight: Full sun only – this grass is shade intolerant
  • Soil: pH range of 5.8-8.0, low fertility requirements
  • Water: Low water needs once established, requires 14-24 inches annual precipitation
  • Drainage: Good drainage essential – no tolerance for waterlogged conditions

Planting and Establishment

California barley is typically grown from seed, which makes sense since it produces about 30,000 seeds per pound! Here’s how to get started:

  • Timing: Plant in fall or early spring
  • Seeding: Direct sow seeds in prepared soil
  • Patience required: This grass has a slow growth rate and low seedling vigor, so don’t expect instant results
  • Establishment: Allow 2-3 growing seasons for full establishment
  • Root depth: Needs at least 10 inches of soil depth for proper root development

Seasonal Interest

While California barley won’t provide year-round drama, it does offer subtle seasonal changes:

  • Spring: Active growing period with small yellow flowers in mid-spring
  • Summer: Produces brown seeds from spring through summer
  • Fall/Winter: Foliage remains green but growth slows significantly

Is California Barley Right for Your Garden?

This native grass is perfect if you:

  • Want to support native ecosystems
  • Need low-maintenance, drought-tolerant plants
  • Are working with poor or challenging soils
  • Live in fire-prone areas
  • Prefer subtle, naturalistic garden design

However, it might not be the best choice if you’re looking for showy flowers, fast results, or plants that thrive in shade or wet conditions.

California barley proves that sometimes the most valuable plants are the quiet workhorses rather than the garden divas. In the right setting, this native grass provides structure, supports local wildlife, and asks for very little in return – exactly what sustainable gardening is all about.

How

California Barley

Grows

Growing season

Spring

Lifespan

Short

Growth form & shape

Bunch and Erect

Growth rate

Slow

Height at 20 years
Maximum height

1.6

Foliage color

Green

Summer foliage density

Porous

Winter foliage density

Porous

Foliage retention

No

Flowering

No

Flower color

Yellow

Fruit/seeds

No

Fruit/seed color

Brown

Allelopath

No

Nitrogen fixing

None

Toxic

None

C:N Ratio

Medium

Fire Resistant

No

Foliage Texture

Medium

Low-growing Grass

No

Resproutability

No

Coppice Ability

No

Bloat

None

California Barley

Growing Conditions

Adapted to Coarse Soil

Yes

Adapted to Medium Soil

Yes

Adapted to Fine Soil

Yes

Anaerobic tolerance

None

CaCO₃ tolerance

Low

Cold Stratification

No

Drought tolerance

Medium

Nutrient requirement

Low

Fire tolerance

High

Frost-free days minimum

180

Hedge tolerance

None

Moisture requirement

Low

pH range

5.8 to 8.0

Plants per acre
Precipitation range (in)

14 to 24

Min root depth (in)

10

Salt tolerance

Low

Shade tolerance

Intolerant

Min temperature (F)

-3

Cultivating

California Barley

Flowering season

Mid Spring

Commercial availability

Contracting Only

Fruit/seed abundance

Low

Fruit/seed season

Spring to Summer

Fruit/seed persistence

No

Propagated by bare root

No

Propagated by bulb

No

Propagated by container

No

Propagated by corm

No

Propagated by cuttings

No

Propagated by seed

Yes

Propagated by sod

No

Propagated by sprigs

No

Propagated by tubers

No

Seed per pound

30000

Seed spread rate

Slow

Seedling vigor

Low

Small grain

No

Vegetative spread rate

None

California Barley

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Commelinidae

Order

Cyperales

Family

Poaceae Barnhart - Grass family

Genus

Hordeum L. - barley

Species

Hordeum brachyantherum Nevski - meadow barley

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