North America Non-native Plant

Carex Austroalpina

Botanical name: Carex austroalpina

USDA symbol: CAAU23

Habit: grass

Native status: Not native but doesn't reproduce and persist in the wild

Synonyms: Carex refracta auct. (CARE19)   

Carex austroalpina: The Mystery Alpine Sedge If you’ve stumbled upon the name Carex austroalpina in your plant research, you’ve discovered what might be one of the more enigmatic members of the sedge family. This grass-like plant belongs to the Cyperaceae family, but here’s where things get interesting (and a bit ...

Carex austroalpina: The Mystery Alpine Sedge

If you’ve stumbled upon the name Carex austroalpina in your plant research, you’ve discovered what might be one of the more enigmatic members of the sedge family. This grass-like plant belongs to the Cyperaceae family, but here’s where things get interesting (and a bit puzzling) – reliable information about this particular species is surprisingly scarce.

What We Know (And What We Don’t)

Carex austroalpina is classified as a graminoid, meaning it’s one of those wonderful grass-like plants that include sedges, rushes, and true grasses. The name suggests an alpine connection – austroalpina hints at southern alpine regions – but the exact native range remains unclear in available botanical literature.

This species has been listed with the synonym Carex refracta auct., though even this taxonomic information comes with uncertainty markers that make botanists scratch their heads.

The Growing Challenge

Here’s where we need to be honest with you: specific growing information for Carex austroalpina is virtually non-existent in standard horticultural references. This raises some important questions about whether this species is correctly identified in cultivation or if it might be confused with other, better-documented sedges.

What This Means for Your Garden

If you’re considering this plant for your landscape, we’d recommend proceeding with caution. Without clear information about:

  • Native status and geographic origin
  • Specific growing requirements
  • Hardiness zones
  • Mature size and growth habits
  • Wildlife and pollinator benefits

It’s difficult to make an informed decision about whether this sedge belongs in your garden.

Better-Documented Alternatives

Instead of wrestling with this botanical mystery, consider these well-documented native sedges that might give you similar results:

  • Local native Carex species appropriate for your region
  • Carex pensylvanica (Pennsylvania sedge) for dry shade areas
  • Carex comosa (longhair sedge) for wet areas
  • Carex vulpinoidea (fox sedge) for various moisture conditions

The Bottom Line

While the mystery surrounding Carex austroalpina might intrigue plant collectors and botanical detectives, most gardeners will find greater success and satisfaction with well-documented native sedges. These alternatives offer known benefits for wildlife, clear growing requirements, and the confidence that comes with choosing plants backed by solid horticultural knowledge.

If you do encounter this species for sale or in plant swaps, ask detailed questions about its source, growing requirements, and positive identification. Sometimes the most responsible gardening choice is to stick with the tried and true rather than venture into botanical uncertainty.

Carex Austroalpina

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 austroalpina Bech.

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