North America Native Plant

Hudson Bay Sedge

Botanical name: Carex heleonastes heleonastes

USDA symbol: CAHEH2

Life cycle: perennial

Habit: grass

Native status: Native to Alaska âš˜ Native to Canada âš˜ Native to the lower 48 states  

Synonyms: Carex curta Goodenough var. robustior (Kük.) B. Boivin (CACUR)   

Hudson Bay Sedge: A Northern Beauty for Cold Climate Gardens If you’re gardening in the far north and looking for a truly native grass-like plant that can handle your challenging climate, Hudson Bay sedge (Carex heleonastes heleonastes) might just be the hardy perennial you’ve been searching for. This northern sedge ...

Rare plant alert!

Region: Conservation status by state

Status: S4T3T4: Status is uncertain but is somewhere between the following rankings: Subspecies or variety is vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals. ⚘ Apparently Secure: Uncommon but not rare, and usually widespread. Possibly cause for longterm concern. Typically more than 100 occurrences in the state or more than 10,000 individuals ⚘ Subspecies or varieties is apparently secure: Uncommon but not rare, and usually widespread. Possibly cause for longterm concern. Typically more than 100 occurrences in the region or more than 10,000 individuals ⚘

Hudson Bay Sedge: A Northern Beauty for Cold Climate Gardens

If you’re gardening in the far north and looking for a truly native grass-like plant that can handle your challenging climate, Hudson Bay sedge (Carex heleonastes heleonastes) might just be the hardy perennial you’ve been searching for. This northern sedge is one of those if you know, you know plants that thrives where many others simply can’t survive.

What Is Hudson Bay Sedge?

Hudson Bay sedge is a perennial sedge that belongs to the Cyperaceae family. Like its sedge cousins, it’s a grass-like plant that forms clumps and adds texture to the landscape. Don’t let the scientific name intimidate you – this is simply a tough, cold-loving plant that has adapted to some of North America’s most challenging growing conditions.

Where Does It Call Home?

This sedge has an impressive northern range that reads like a geography lesson in cold climates. You’ll find Hudson Bay sedge naturally growing across Alaska, multiple Canadian provinces including Alberta, British Columbia, Manitoba, Ontario, Quebec, Saskatchewan, Yukon, Northwest Territories, and Nunavut, plus Labrador and Newfoundland. In the United States, it makes an appearance in Michigan, showing just how far south this northern native can venture.

Should You Plant Hudson Bay Sedge?

Here’s where we need to have an honest conversation. While Hudson Bay sedge is undoubtedly a fascinating native plant, it’s not your typical garden center find. This sedge is adapted to very specific northern conditions, and finding it for purchase can be quite challenging. Additionally, with a Global Conservation Status that suggests it may have some regional variations in abundance, it’s important to source any plants responsibly from reputable native plant nurseries.

Growing Conditions and Care

If you’re lucky enough to live within this sedge’s native range and can source it responsibly, here’s what you need to know:

  • Climate: This plant is built for cold – think hardy northern conditions
  • Moisture: Like most sedges, it likely prefers consistently moist to wet conditions
  • Soil: Probably adaptable to various soil types, as long as moisture needs are met
  • Sun exposure: Likely tolerates partial shade to full sun, typical of northern sedges

Landscape Role and Design Ideas

In the right location, Hudson Bay sedge can serve as:

  • A naturalistic groundcover in wet areas
  • Part of a native wetland garden or rain garden
  • Erosion control along water features
  • Habitat enhancement in restoration projects

The Reality Check

Let’s be real – unless you’re working on a specialized native plant restoration project in the far north, you’re probably not going to encounter Hudson Bay sedge at your local garden center. And that’s okay! There are many other native sedge species that might be more readily available and better suited to typical garden situations in your area.

Native Alternatives

If you’re drawn to the idea of native sedges but Hudson Bay sedge isn’t practical for your situation, consider researching other native Carex species in your region. Many sedges offer similar grass-like texture, wildlife benefits, and that wonderful native plant satisfaction, while being more readily available and better documented for garden use.

Final Thoughts

Hudson Bay sedge represents the fascinating diversity of North America’s native flora, particularly in our northern regions. While it may not be the easiest plant to source or grow, it serves as a reminder of the incredible adaptations plants have made to thrive in challenging environments. If you’re in its native range and passionate about true native gardening, it could be worth seeking out – just make sure to source it responsibly and have realistic expectations about its availability and growing requirements.

Hudson Bay Sedge

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

Cyperaceae Juss. - Sedge family

Genus

Carex L. - sedge

Species

Carex heleonastes L. f. - Hudson Bay sedge

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