North America Native Plant

Seaside Brome

Botanical name: Bromus maritimus

USDA symbol: BRMA5

Life cycle: perennial

Habit: grass

Native status: Native to the lower 48 states  

Synonyms: Bromus carinatus Hook. & Arn. var. maritimus (Piper) C.L. Hitchc. (BRCAM)   

Seaside Brome: A Coastal Native Grass Worth Knowing If you’re gardening along the Pacific Coast and looking for authentic native grasses, seaside brome (Bromus maritimus) might just be the unsung hero your landscape needs. This perennial grass species is a true West Coast native, calling the coastal regions of California ...

Seaside Brome: A Coastal Native Grass Worth Knowing

If you’re gardening along the Pacific Coast and looking for authentic native grasses, seaside brome (Bromus maritimus) might just be the unsung hero your landscape needs. This perennial grass species is a true West Coast native, calling the coastal regions of California and Oregon home.

Where You’ll Find Seaside Brome

Seaside brome is naturally distributed along the Pacific coastline, specifically in California and Oregon. This native grass has evolved to thrive in the unique conditions found in coastal environments, making it a valuable addition for gardeners in these regions who want to support local ecosystems.

Why Consider Seaside Brome for Your Garden?

As a native perennial grass, seaside brome offers several advantages for the environmentally conscious gardener:

  • True native status supports local wildlife and pollinators
  • Adapted to coastal conditions, requiring less water once established
  • Perennial nature means it comes back year after year
  • Helps with erosion control in coastal areas
  • Low-maintenance once established in appropriate conditions

What to Expect from Seaside Brome

Like other members of the brome grass family, seaside brome likely produces characteristic seed heads and has the typical grass-like appearance you’d expect. However, specific details about its exact height, spread, and ornamental qualities are limited in cultivation literature, as this species is more commonly encountered in its natural habitat than in formal gardens.

Growing Seaside Brome Successfully

While specific cultivation information for seaside brome is limited, we can make educated assumptions based on its native coastal habitat:

  • Soil: Likely prefers well-draining, sandy soils typical of coastal areas
  • Water: Probably drought-tolerant once established, adapted to coastal rainfall patterns
  • Sun: Most coastal grasses prefer full sun to partial shade
  • Climate: Best suited for coastal California and Oregon climates

Is Seaside Brome Right for Your Garden?

Seaside brome is best suited for:

  • Coastal restoration projects
  • Native plant gardens in California and Oregon
  • Naturalized landscapes that mimic coastal ecosystems
  • Erosion control on slopes near the coast
  • Wildlife gardens supporting native species

However, if you’re looking for a showy ornamental grass or live outside its native range, you might want to consider other options. Seaside brome appears to be more of an ecological workhorse than a garden showstopper.

A Note on Availability

Finding seaside brome in typical nurseries might be challenging, as it’s not commonly cultivated commercially. If you’re interested in growing this native grass, try contacting native plant nurseries in California and Oregon, or organizations focused on coastal restoration. Always ensure any plants you acquire are from ethical, sustainable sources.

The Bottom Line

Seaside brome represents the kind of authentic native plant that serious coastal gardeners and restoration enthusiasts seek out. While it may not be the flashiest grass in the garden, its value lies in supporting local ecosystems and maintaining the natural character of coastal landscapes. If you’re gardening in its native range and want to create habitat for local wildlife while using plants perfectly adapted to your coastal conditions, seaside brome deserves consideration.

Seaside 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 maritimus (Piper) Hitchc. - seaside brome

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