North America Non-native Plant

Bromus Tomentosus

Botanical name: Bromus tomentosus

USDA symbol: BRTO6

Habit: grass

Native status: Not native but doesn't reproduce and persist in the wild

Bromus tomentosus: The Mystery Grass That Might Not Exist If you’ve stumbled across the name Bromus tomentosus in your gardening research, you’re not alone in scratching your head. This particular plant name presents quite the botanical puzzle, and there’s a good reason why you might be having trouble finding information ...

Bromus tomentosus: The Mystery Grass That Might Not Exist

If you’ve stumbled across the name Bromus tomentosus in your gardening research, you’re not alone in scratching your head. This particular plant name presents quite the botanical puzzle, and there’s a good reason why you might be having trouble finding information about it.

The Case of the Missing Grass

Bromus tomentosus appears to be either an extremely obscure species or potentially an invalid botanical name that doesn’t correspond to a currently recognized plant species. The genus Bromus, commonly known as brome grasses, contains many well-documented species, but this particular name doesn’t appear in major botanical databases or plant identification resources.

What We Know About Bromus

Since Bromus tomentosus belongs to the monocot classification group, we can tell you that if it exists, it would be a grass-like plant. The Bromus genus typically includes:

  • Annual or perennial grasses
  • Plants with distinctive seed heads
  • Species that range from native beneficial plants to invasive weeds
  • Grasses that often prefer disturbed soils

A Word of Caution for Gardeners

Here’s where things get tricky for home gardeners. Many Bromus species are actually invasive weeds that can quickly take over garden spaces and natural areas. Without being able to properly identify Bromus tomentosus or confirm its status, we can’t recommend planting it.

If you’re interested in adding native grasses to your garden, consider these alternatives instead:

  • Research well-documented native grass species in your area
  • Consult with local native plant societies
  • Visit native plant nurseries for verified species
  • Work with local extension offices for grass identification

The Bottom Line

Sometimes in the plant world, we encounter names that lead us down rabbit holes of confusion. Bromus tomentosus appears to be one of those cases. Rather than risk introducing an unknown or potentially problematic species to your garden, stick with well-documented native plants that will provide clear benefits to your local ecosystem.

If you believe you’ve encountered this plant in the wild or have seeds labeled as such, consider reaching out to a local botanist or extension office for proper identification. It’s always better to be safe than sorry when it comes to adding new plants to our gardens and landscapes.

Bromus Tomentosus

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 tomentosus Trin.

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