Circumpolar Reedgrass: The Ultimate Cold-Climate Native Grass
If you’re gardening in the frigid north and looking for a grass that laughs in the face of winter, meet circumpolar reedgrass (Calamagrostis deschampsioides). This hardy perennial grass is nature’s answer to extreme cold, bringing delicate beauty to some of the harshest climates on Earth.
What Is Circumpolar Reedgrass?
Circumpolar reedgrass is a perennial grass that belongs to the grass family (Poaceae). True to its name, this resilient plant naturally occurs in the circumpolar regions of North America, making it one of the most cold-tolerant grasses you can grow. It’s a native species to both Alaska and Canada, perfectly adapted to life in the far north.
Where Does It Grow Naturally?
This remarkable grass calls some pretty extreme places home. You’ll find circumpolar reedgrass naturally growing across Alaska, and in the Canadian provinces and territories of Manitoba, Ontario, Quebec, Yukon, Northwest Territories, Nunavut, and Labrador. If you live in these areas, you’re looking at a true local native that’s perfectly suited to your climate.
Why Grow Circumpolar Reedgrass?
There are several compelling reasons to consider this northern beauty for your garden:
- Extreme cold hardiness: This grass thrives in USDA hardiness zones 1-4, making it perfect for the coldest climates
- Native plant benefits: Supporting local ecosystems by growing plants that naturally belong in your area
- Low maintenance: Once established, it requires minimal care
- Wetland tolerance: Classified as facultatively wetland, it handles both wet and moderately dry conditions
- Unique aesthetic: Fine-textured foliage and delicate seed heads add subtle elegance to cold-climate gardens
Garden Design Ideas
Circumpolar reedgrass works beautifully in several garden settings:
- Rock gardens: Its fine texture contrasts nicely with stone
- Alpine gardens: Perfect companion for other cold-hardy mountain plants
- Naturalized areas: Ideal for creating prairie-like landscapes in northern regions
- Wetland gardens: Excellent choice for rain gardens or areas with seasonal moisture
- Cold-climate borders: Adds movement and texture to perennial plantings
Growing Conditions
This adaptable grass prefers:
- Light: Full sun to partial shade
- Soil: Tolerates poor soils but prefers moist, well-draining conditions
- Water: Moderate moisture; handles both wet and somewhat dry conditions
- Climate: Cool to cold climates; struggles in hot, humid conditions
Planting and Care Tips
Growing circumpolar reedgrass is refreshingly straightforward:
- Planting: Best planted in spring or early fall when temperatures are cool
- Spacing: Allow adequate room for clumping growth habit
- Watering: Water regularly during establishment, then reduce as the plant becomes established
- Maintenance: Cut back old foliage in late winter before new growth begins
- Propagation: May self-seed in favorable conditions; can also be divided
Wildlife and Ecosystem Benefits
As a native grass, circumpolar reedgrass provides important habitat structure for northern wildlife. While it’s wind-pollinated (so it won’t attract bees like flowering plants), it offers shelter and nesting materials for birds and small mammals. The seeds may also provide food for wildlife during the harsh northern winters.
Is This Grass Right for You?
Circumpolar reedgrass is an excellent choice if you:
- Garden in zones 1-4 or other extremely cold climates
- Want to grow native plants that support local ecosystems
- Need a low-maintenance grass for challenging conditions
- Have wet or seasonally moist areas in your landscape
- Appreciate subtle, fine-textured plants over bold, flashy ones
However, this grass might not be the best fit if you’re in warmer climates (zones 5 and above) or looking for a dramatic focal point plant. Its beauty lies in its understated elegance and incredible toughness rather than showy flowers or bold foliage.
The Bottom Line
Circumpolar reedgrass proves that you don’t need to sacrifice beauty for hardiness. This native grass brings subtle charm and incredible resilience to northern gardens, making it a smart choice for gardeners who want to work with nature rather than against it. If you’re gardening where winter means business, this grass has got your back – and your landscape – covered.
