Native Plants

Cusick’s Bluegrass

Poa cusickii cusickii

USDA symbol: POCUC4

perennial grass

Lower 48 states: native

If you’re looking for a tough, no-fuss native grass that can handle whatever Mother Nature throws at it, let me introduce you to Cusick’s bluegrass (Poa cusickii cusickii). This unassuming little perennial might not win any beauty contests, but it’s the kind of plant that quietly does its job while ...

Cusick’s Bluegrass: A Hardy Native Grass for Western Gardens

If you’re looking for a tough, no-fuss native grass that can handle whatever Mother Nature throws at it, let me introduce you to Cusick’s bluegrass (Poa cusickii cusickii). This unassuming little perennial might not win any beauty contests, but it’s the kind of plant that quietly does its job while asking for almost nothing in return.

What Makes Cusick’s Bluegrass Special?

Cusick’s bluegrass is a true native of the American West, calling home to six states: California, Idaho, Montana, Nevada, Oregon, and Washington. You might also see it listed under its former names like Poa filifolia or Poa hansenii in older gardening references, but they’re all the same resilient little grass.

This perennial grass forms neat, dense tufts of fine-textured foliage that ranges from blue-green to gray-green, depending on growing conditions and the season. While it may look delicate, don’t let that fool you – this grass is as tough as they come.

  • Species observed
  • No observations

Why Your Garden Needs This Grass

Cusick’s bluegrass shines in situations where other plants might struggle. Here’s why it deserves a spot in your landscape:

  • Drought champion: Once established, this grass can handle extended dry periods without breaking a sweat
  • Erosion fighter: Those dense root systems make it excellent for slopes and areas prone to soil movement
  • Low maintenance: Plant it, water it occasionally the first year, then pretty much forget about it
  • Climate adaptable: Hardy in USDA zones 4-8, handling both cold winters and hot summers

Perfect Garden Companions

This grass plays well with others in native plant gardens, rock gardens, and xerophytic (dry) landscapes. It’s particularly at home in naturalistic settings where you want that wild meadow look without the high maintenance. Think of it as the reliable friend who’s always there when you need them – not flashy, but dependable.

Cusick’s bluegrass works beautifully as groundcover in areas where you need something green but don’t want the hassle of regular lawn care. It’s also perfect for transitional areas between more formal garden spaces and wilder, more natural areas of your property.

Growing Cusick’s Bluegrass Successfully

The beauty of this grass lies in its simplicity. Here’s how to grow it successfully:

Location and Soil: Choose a spot with full sun to partial shade and well-draining soil. This grass isn’t picky about soil type but absolutely cannot tolerate waterlogged conditions.

Planting: Spring or fall are your best bets for planting. Space plants about 12-18 inches apart if you’re looking for eventual coverage, or plant them closer for quicker fill-in.

Watering: Water regularly the first growing season to help establish those important deep roots. After that, you can largely let nature take the wheel – this grass actually prefers to stay on the dry side.

Maintenance: Here’s the best part – there’s almost no maintenance required! You can cut it back in late winter if you want a tidy appearance, but even that’s optional.

What to Expect

Don’t expect dramatic flowers or showy seed heads from Cusick’s bluegrass. This is a wind-pollinated grass, so while it does produce small, delicate seed heads, they’re more subtle than spectacular. The real beauty lies in the fine texture and reliable green presence it provides throughout the growing season.

As for wildlife benefits, while this grass doesn’t attract pollinators like flowering plants do, it can provide shelter for small creatures and its seeds may feed birds, though specific wildlife data for this species is limited.

The Bottom Line

Cusick’s bluegrass might not be the star of your garden, but it’s definitely supporting cast material. If you’re gardening in the western states and want a native grass that’s drought-tolerant, low-maintenance, and reliable, this little grass deserves serious consideration. It’s the kind of plant that makes you look like a gardening genius without actually requiring much genius at all – and honestly, we could all use more plants like that in our lives!

Poa cusickii cusickii is also known as...

Often we refer to plants by their common names. When shopping for plants the scientific name is the best way to positively identify the plant species you desire. But some plants have more than one name! While it doesn't happen often, nurseries might display one name while you're searching for another. Poa cusickii cusickii is also known as:

Poa cusickii Vasey var. cusickii | USDA symbol: POCUC5
Poa filifolia | USDA symbol: POFI6
Poa hansenii | USDA symbol: POHA3

Why do some plants have more than one name? Over time plant species may be renamed for a few reasons:

  1. Botanists in different regions named the same plant without knowing it had already been classified.
  2. A species was reclassified after scientific advances in, for example, DNA analysis.
  3. Slight variations within a species are sometimes mistakenly identified as entirely new species.

Classification

Group: Monocot
Kingdom: Plantae - Plants
Subkingdom: Tracheobionta - Vascular plants
Superdivision: Spermatophyta - Seed plants
Division: Magnoliophyta - Flowering plants
Class: Liliopsida - Monocotyledons
Subclass: Commelinidae
Order: Cyperales
Family: Poaceae Barnhart - Grass family
Genus: Poa L. - bluegrass

Species: Poa cusickii Vasey - Cusick's bluegrass

Subspecies: Poa cusickii Vasey ssp. cusickii - Cusick's bluegrass

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