North America Native Plant

Bering Sea Sedge

Botanical name: Carex microchaeta nesophila

USDA symbol: CAMIN

Life cycle: perennial

Habit: grass

Native status: Native to Alaska  

Synonyms: Carex nesophila T. Holm (CANE4)   

Bering Sea Sedge: A Mysterious Native Alaskan Sedge If you’ve stumbled upon the name Bering Sea sedge (Carex microchaeta nesophila), you’ve discovered one of North America’s more elusive native plants. This perennial sedge is a true Alaskan endemic, belonging to the vast and diverse Carex genus that includes hundreds of ...

Bering Sea Sedge: A Mysterious Native Alaskan Sedge

If you’ve stumbled upon the name Bering Sea sedge (Carex microchaeta nesophila), you’ve discovered one of North America’s more elusive native plants. This perennial sedge is a true Alaskan endemic, belonging to the vast and diverse Carex genus that includes hundreds of sedge species across the continent.

What Exactly Is Bering Sea Sedge?

Carex microchaeta nesophila is a grass-like perennial that belongs to the sedge family (Cyperaceae). Like other sedges, it’s not technically a grass, though it shares that characteristic blade-like appearance that makes sedges such valuable additions to naturalistic landscapes. The scientific name gives us some clues about this plant – nesophila suggests an affinity for islands, which makes sense given Alaska’s island-dotted coastline.

You might occasionally see this plant listed under its synonym, Carex nesophila, but regardless of the name you encounter, you’re looking at the same mysterious Alaskan native.

Where Does It Call Home?

This sedge is exclusively native to Alaska, making it a true northern specialist. Its distribution appears to be quite limited even within the state, which contributes to the scarcity of information about this species.

The Challenge of Growing Bering Sea Sedge

Here’s where things get tricky for gardeners interested in this native sedge. Carex microchaeta nesophila appears to be either extremely rare or very poorly documented – possibly both. This presents several challenges for the home gardener:

  • Seeds or plants are virtually impossible to source commercially
  • Specific growing requirements remain largely unknown
  • Its rarity means it should only be grown from responsibly sourced material
  • Climate requirements likely limit it to very cold, northern regions

What We Can Infer

While specific growing information is scarce, we can make some educated guesses based on its Alaskan origins and sedge family characteristics:

  • Likely requires very cold winter temperatures
  • Probably thrives in moist to wet soils
  • May prefer acidic soil conditions typical of northern regions
  • Potentially suitable for bog gardens or wetland plantings in appropriate climates

Better Alternatives for Most Gardeners

Unless you’re specifically working on conservation projects or happen to live in coastal Alaska, you’ll likely want to consider other native sedges that are better documented and more readily available. Some excellent alternatives include:

  • Pennsylvania sedge (Carex pensylvanica) for dry shade
  • Fox sedge (Carex vulpinoidea) for wet areas
  • Bladder sedge (Carex intumescens) for rain gardens

The Importance of Rare Plants

While Bering Sea sedge might not be the sedge for your backyard garden, it represents something important in our native plant communities. Rare and endemic species like this one play crucial roles in their specific ecosystems and deserve our protection and respect.

If you’re interested in supporting rare plant conservation, consider volunteering with native plant societies, participating in citizen science projects, or supporting organizations that work to protect Alaska’s unique flora.

The Bottom Line

Carex microchaeta nesophila remains one of those intriguing botanical mysteries – a native sedge that’s either incredibly rare or simply understudied. For most gardeners, it’s more of a fascinating footnote in the world of native plants rather than a practical gardening choice. However, its existence reminds us of the incredible diversity of native species across North America and the importance of protecting these unique plants in their natural habitats.

Bering Sea 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 microchaeta T. Holm - smallawned sedge

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