North America Native Plant

Grassyslope Sedge

Botanical name: Carex oreocharis

USDA symbol: CAOR

Life cycle: perennial

Habit: grass

Native status: Native to the lower 48 states  

Grassyslope Sedge: A Rare Mountain Treasure for Specialized Gardens Meet the grassyslope sedge (Carex oreocharis), a charming little native that’s as unique as its mountain home. This perennial sedge might not win any flashy flower contests, but it’s got something special that makes it worth knowing about – especially if ...

Rare plant alert!

Region: Conservation status by state

Status: S3: Status is uncertain but is somewhere between the following rankings: 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 ⚘

Grassyslope Sedge: A Rare Mountain Treasure for Specialized Gardens

Meet the grassyslope sedge (Carex oreocharis), a charming little native that’s as unique as its mountain home. This perennial sedge might not win any flashy flower contests, but it’s got something special that makes it worth knowing about – especially if you’re into rare native plants or alpine gardening.

What Makes Grassyslope Sedge Special?

This grass-like beauty belongs to the sedge family, those sturdy relatives of true grasses that know how to handle tough conditions. What sets grassyslope sedge apart is its remarkable ability to thrive on mountain slopes where many other plants simply can’t hack it.

As a native species to the lower 48 states, grassyslope sedge naturally occurs in Arizona, Colorado, New Mexico, and Wyoming. It’s perfectly adapted to the challenging conditions of high-elevation environments.

A Word of Caution: This Plant is Rare

Before we dive into growing tips, here’s something important to know: grassyslope sedge has a Global Conservation Status of S3, meaning it’s considered vulnerable. With typically only 21 to 100 occurrences or between 3,000 and 10,000 individuals in the wild, this isn’t your everyday garden plant.

If you’re interested in growing this species, please only source it from reputable native plant nurseries that propagate their own stock responsibly. Never collect from wild populations.

Should You Plant Grassyslope Sedge?

This sedge is definitely not for everyone, but it might be perfect for you if:

  • You’re creating an alpine or rock garden
  • You love collecting rare native plants
  • You want to support conservation through cultivation
  • You’re designing a specialized mountain-themed landscape
  • You appreciate subtle, grass-like textures in your garden

However, skip this one if you’re looking for showy flowers, fast-growing ground cover, or easy-care plants for beginners.

Growing Grassyslope Sedge Successfully

Getting the Conditions Right

Think mountain meadow when planning for this sedge. It thrives in USDA hardiness zones 4-7, preferring the cooler temperatures and excellent drainage that mimic its natural habitat.

Key growing requirements include:

  • Excellent drainage – this is absolutely critical
  • Well-draining, preferably gravelly or sandy soil
  • Full sun to partial shade
  • Cool, mountain-like conditions
  • Protection from hot, humid summers if you’re not in its native range

Planting and Care Tips

Since grassyslope sedge is adapted to harsh mountain conditions, it’s surprisingly low-maintenance once established in the right environment:

  • Plant in spring or early fall
  • Amend heavy clay soils with gravel or coarse sand for drainage
  • Water regularly the first year, then reduce as the plant establishes
  • Avoid fertilizing – mountain plants prefer lean soils
  • Mulch with gravel rather than organic matter

Wildlife and Ecological Benefits

While sedges aren’t typically pollinator magnets (they’re wind-pollinated), they do provide valuable habitat and food for wildlife. The seeds can feed small birds, and the tufting growth provides shelter for tiny creatures in alpine environments.

The Bottom Line

Grassyslope sedge is a fascinating native plant that deserves our respect and protection. If you have the right conditions and can source it responsibly, it makes a wonderful addition to specialized alpine gardens. Just remember – with great rarity comes great responsibility. By growing this vulnerable species in our gardens, we’re helping ensure its survival for future generations.

Not quite right for your garden? Consider other native sedges from your region that might be more readily available and better suited to your specific conditions. Your local native plant society can point you toward excellent alternatives!

Grassyslope 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 oreocharis T. Holm - grassyslope sedge

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