North America Non-native Plant

Soft Brome

Botanical name: Bromus hordeaceus divaricatus

USDA symbol: BRHOD

Life cycle: annual

Habit: grass

Native status: Non-native, reproduces and persists in the wild in Hawaii âš˜ Non-native, reproduces and persists in the wild in the lower 48 states  

Synonyms: Bromus hordeaceus L. ssp. molliformis (Lloyd) Maire & Weiller (BRHOM)  âš˜  Bromus molliformis Lloyd (BRMO)   

Soft Brome: Understanding This Non-Native Annual Grass If you’ve stumbled across the name soft brome while researching grasses for your garden, you’ve encountered Bromus hordeaceus divaricatus – a non-native annual grass that has established itself across several U.S. states. While it might not be the showstopper you’re looking for in ...

Soft Brome: Understanding This Non-Native Annual Grass

If you’ve stumbled across the name soft brome while researching grasses for your garden, you’ve encountered Bromus hordeaceus divaricatus – a non-native annual grass that has established itself across several U.S. states. While it might not be the showstopper you’re looking for in your landscape design, understanding this grass can help you make informed decisions about your garden’s plant palette.

What is Soft Brome?

Soft brome is an annual grass that belongs to the brome family, known scientifically as Bromus hordeaceus divaricatus. You might also see it referenced under its synonyms Bromus hordeaceus L. ssp. molliformis or Bromus molliformis Lloyd in older botanical references. As an annual, this grass completes its entire life cycle – from germination to seed production – within a single growing season.

Where Does Soft Brome Grow?

This non-native grass has made itself at home across a scattered range of U.S. states. You’ll find established populations in California, Hawaii, Louisiana, Michigan, New Mexico, and Texas. The species has demonstrated its ability to reproduce spontaneously in the wild without human intervention and tends to persist once established in these regions.

Should You Plant Soft Brome in Your Garden?

Here’s where things get a bit tricky. Since soft brome is non-native and we don’t have complete information about its invasive potential or ecological impact, it’s worth proceeding with caution. While it’s not currently flagged as invasive or noxious, that doesn’t necessarily mean it’s the best choice for your garden.

Instead of soft brome, consider exploring native grass alternatives that are naturally adapted to your local ecosystem. Native grasses offer several advantages:

  • Better support for local wildlife and pollinators
  • Natural adaptation to your region’s climate and soil conditions
  • Lower maintenance requirements once established
  • Contribution to local biodiversity

The Bottom Line

While soft brome isn’t necessarily a bad plant, it’s also not offering the ecological benefits you’d get from native alternatives. If you’re passionate about supporting local ecosystems through your gardening choices, consider researching native grasses that naturally occur in your area. Your local native plant society or extension office can be excellent resources for finding beautiful, regionally appropriate alternatives that will thrive in your garden while supporting the broader ecosystem.

Remember, every plant choice in your garden is an opportunity to create habitat and support biodiversity – why not make it count with species that truly belong in your local landscape?

Soft 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 hordeaceus L. - soft brome

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