Native Plants

Hartz’s Bluegrass

Poa hartzii hartzii

USDA symbol: POHAH

perennial grass

Canada: native
Greenland: native

If you’re dreaming of bringing a touch of the Arctic to your garden, Hartz’s bluegrass (Poa hartzii hartzii) might catch your attention. But before you start planning, let’s dive into what makes this perennial grass both fascinating and challenging for the average gardener. Hartz’s bluegrass is a perennial grass native ...

Hartz’s Bluegrass may be listed as rare in your area.
Global Conservation Status

Status: S3S4T3T4 | Subspecies or varieties apparently secure: Uncommon but not rare, and usually widespread. Possible cause for longterm concern. Typically more than 100 occurrences or more than 10,000 individuals.

Hartz’s Bluegrass: An Arctic Treasure for Specialized Gardens

If you’re dreaming of bringing a touch of the Arctic to your garden, Hartz’s bluegrass (Poa hartzii hartzii) might catch your attention. But before you start planning, let’s dive into what makes this perennial grass both fascinating and challenging for the average gardener.

What Is Hartz’s Bluegrass?

Hartz’s bluegrass is a perennial grass native to some of the coldest places on Earth – Canada and Greenland. This hardy little survivor belongs to the Poaceae family, making it a true grass rather than a grass-like imposter. It’s named after someone called Hartz (though the historical details are a bit fuzzy), and it’s built to withstand conditions that would make most plants throw in the towel.

Where Does It Call Home?

This arctic specialist has made its home in Quebec, Northwest Territories, and Nunavut – basically, the kinds of places where warm weather means it’s above freezing. It thrives in the extreme northern reaches of North America, where growing seasons are measured in weeks rather than months.

  • Species observed
  • No observations

Should You Grow Hartz’s Bluegrass?

Here’s where things get interesting (and potentially disappointing for most gardeners). Hartz’s bluegrass comes with a Global Conservation Status of S3S4T3T4, which indicates it has some conservation concerns. This means if you’re considering growing it, you’ll want to source it responsibly from reputable native plant suppliers – never from wild populations.

But here’s the bigger challenge: unless you live in an arctic or subarctic climate, this grass probably isn’t going to be happy in your garden. It’s evolved for extremely cold conditions and short growing seasons that most of us simply can’t replicate.

Growing Conditions and Care

If you happen to live in USDA hardiness zones 1-3 (the really, really cold ones), you might have a shot at growing Hartz’s bluegrass successfully. This perennial grass likely prefers:

  • Extremely cold winters and cool summers
  • Well-draining soils that may be rocky or sandy
  • Full sun exposure typical of arctic environments
  • Minimal competition from other plants

Garden Role and Landscape Use

In its native habitat, Hartz’s bluegrass serves as ground cover in harsh arctic and subarctic landscapes. For the few gardeners who can accommodate its needs, it might work in:

  • Alpine or rock gardens in extremely cold climates
  • Specialized native plant collections
  • Educational or botanical garden displays

Wildlife and Pollinator Value

Like most grasses, Hartz’s bluegrass is wind-pollinated, so it won’t be attracting bees and butterflies to your garden. However, in its native range, it likely provides some habitat and food for arctic wildlife, including small mammals and birds that feed on grass seeds.

The Bottom Line

Hartz’s bluegrass is undoubtedly a remarkable plant – any species that can thrive in arctic conditions deserves our respect. However, it’s not practical for most gardeners due to its extreme climate requirements and conservation status concerns.

If you’re fascinated by cold-climate native grasses but live in a more temperate zone, consider exploring other native grass species that are better suited to your local conditions. Your local native plant society can help you discover beautiful alternatives that will thrive in your specific climate while still supporting local ecosystems.

For those rare gardeners in arctic regions who want to try growing Hartz’s bluegrass, make sure to source plants or seeds from reputable suppliers who can guarantee responsible collection practices. Remember, protecting wild populations is just as important as cultivating garden beauty.

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 hartzii Gandog. - Hartz's bluegrass

Subspecies: Poa hartzii Gandog. ssp. hartzii - Hartz'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