North America Native Plant

Marsh’s Bluegrass

Botanical name: Poa abbreviata marshii

USDA symbol: POABM

Life cycle: perennial

Habit: grass

Native status: Native to the lower 48 states  

Marsh’s Bluegrass: A Rare Native Grass Worth Knowing About If you’ve stumbled across the name Marsh’s bluegrass (Poa abbreviata marshii), you’ve discovered one of North America’s more elusive native grasses. This perennial grass species represents a fascinating piece of our continent’s botanical heritage, though it’s not exactly what you’d call ...

Rare plant alert!

Region: Conservation status by state

Status: S5T2: Status is uncertain but is somewhere between the following rankings: Subspecies or variety is imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 6 to 20 occurrences or few remaining individuals (1,000 to 3,000) ⚘ Secure: At very low or no risk of extinction in the jurisdiction due to a very extensive range, abundant populations or occurrences, with little to no concern from declines or threats. ⚘

Marsh’s Bluegrass: A Rare Native Grass Worth Knowing About

If you’ve stumbled across the name Marsh’s bluegrass (Poa abbreviata marshii), you’ve discovered one of North America’s more elusive native grasses. This perennial grass species represents a fascinating piece of our continent’s botanical heritage, though it’s not exactly what you’d call a garden center staple.

What Is Marsh’s Bluegrass?

Marsh’s bluegrass belongs to the diverse world of grasses and grass-like plants, sharing family ties with familiar lawn grasses, sedges, and rushes. As a perennial, this hardy little plant returns year after year, quietly doing its part in the ecosystems where it naturally occurs.

This native species calls the western United States home, specifically thriving in California, Idaho, and Nevada. While it may not have the flashy appeal of wildflowers, it plays an important ecological role in its native habitats.

The Rarity Factor: Handle with Care

Here’s where things get interesting – and a bit concerning. Marsh’s bluegrass carries a Global Conservation Status of S5T2, which indicates some level of conservation concern. This means that if you’re lucky enough to encounter this species, you’re looking at something genuinely special.

For gardeners interested in native plants, this rarity status comes with responsibility. While we absolutely encourage growing native species, any plant material should be obtained through reputable, ethical sources that don’t impact wild populations.

Why Consider Native Grasses?

You might wonder why anyone would get excited about a grass, especially one that’s hard to find. Here’s the thing about native grasses – they’re the unsung heroes of ecological gardening:

  • They’re perfectly adapted to local climate conditions
  • They support native wildlife and ecosystem functions
  • They typically require less water and maintenance once established
  • They help preserve regional botanical diversity

Growing Native Grasses: The General Approach

While specific growing information for Marsh’s bluegrass is limited due to its rarity, native grass cultivation generally follows some basic principles. Most native grasses prefer well-draining soil and can tolerate drought conditions better than non-native alternatives once established.

If you’re inspired by the idea of native grasses but can’t source Marsh’s bluegrass responsibly, consider exploring other native Poa species or grasses native to your specific region. Your local native plant society or extension office can point you toward appropriate alternatives that offer similar ecological benefits without conservation concerns.

The Bigger Picture

Marsh’s bluegrass reminds us that botanical diversity exists in many forms – not just the showy flowers that typically grab our attention. Every native species, no matter how humble, represents millions of years of adaptation to specific places and conditions.

While you may never grow Marsh’s bluegrass in your garden, knowing about species like this can deepen your appreciation for the complex web of plants that make up our natural heritage. And who knows? Your newfound interest in native grasses might lead you to discover other fascinating species that are both conservation-friendly and garden-appropriate.

Remember, the best native garden is one that celebrates local ecology while respecting the conservation needs of rare species. Sometimes the most meaningful way to honor a plant is simply to learn about it and support the habitats where it naturally thrives.

Marsh’s Bluegrass

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

Poa L. - bluegrass

Species

Poa abbreviata R. Br. - short bluegrass

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