North America Native Plant

Coast Range Brome

Botanical name: Bromus pseudolaevipes

USDA symbol: BRPS

Life cycle: perennial

Habit: grass

Native status: Native to the lower 48 states  

Synonyms: Bromopsis pseudolaevipes (Wagnon) Holub (BRPS2)   

Coast Range Brome: A Mysterious California Native Grass If you’ve stumbled across the name coast range brome (Bromus pseudolaevipes) in your native plant research, you’re not alone in feeling a bit puzzled. This perennial grass is one of those botanical mysteries that keeps even experienced gardeners scratching their heads. What ...

Coast Range Brome: A Mysterious California Native Grass

If you’ve stumbled across the name coast range brome (Bromus pseudolaevipes) in your native plant research, you’re not alone in feeling a bit puzzled. This perennial grass is one of those botanical mysteries that keeps even experienced gardeners scratching their heads.

What Is Coast Range Brome?

Coast range brome is listed as a native perennial grass species found in California. It belongs to the Bromus genus, which includes many familiar brome grasses, though this particular species remains somewhat enigmatic in the gardening world. The plant also goes by the scientific synonym Bromopsis pseudolaevipes, reflecting some taxonomic shuffling that’s occurred over the years.

Where Does It Grow?

According to available records, coast range brome is native to California, living up to its common name by calling the Golden State home. However, specific details about its exact range within California remain unclear.

The Challenge with Coast Range Brome

Here’s where things get interesting (and a bit frustrating): reliable information about coast range brome is surprisingly scarce. While it appears in some botanical databases, details about its appearance, growing requirements, and garden performance are virtually non-existent. This lack of information raises some questions about whether this species is:

  • Extremely rare or localized
  • Possibly misidentified or confused with other brome species
  • Simply overlooked by the gardening and landscaping communities

Should You Try Growing It?

Given the uncertainty surrounding this species, it’s difficult to recommend coast range brome for most garden situations. The lack of cultivation information, unclear growing requirements, and questions about its availability make it a risky choice for gardeners.

Better Native Alternatives

If you’re looking for native California grasses to add to your landscape, consider these well-documented alternatives instead:

  • Purple needlegrass (Stipa pulchra) – California’s state grass
  • California fescue (Festuca californica)
  • Deer grass (Muhlenbergia rigens)
  • Blue wild rye (Elymus glaucus)

These proven performers offer the benefits of native grasses while providing reliable growth characteristics and established care guidelines.

The Bottom Line

While coast range brome intrigues as a California native, the lack of available information makes it unsuitable for most gardening applications. Sometimes in the plant world, mystery doesn’t equal magic – it just means we need more research. Stick with well-documented native grasses that will give you the reliable performance and ecological benefits you’re seeking in your native garden.

If you do encounter this species in the wild or have reliable information about its cultivation, consider contributing to botanical knowledge by documenting your observations with local native plant societies or botanical institutions.

Coast Range Brome

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

Bromus L. - brome

Species

Bromus pseudolaevipes Wagnon - coast range brome

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