North America Native Plant

Western Singlespike Sedge

Botanical name: Carex scirpoidea pseudoscirpoidea

USDA symbol: CASCP3

Life cycle: perennial

Habit: grass

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

Synonyms: Carex pseudoscirpoidea Rydb. (CAPS2)  âš˜  Carex scirpoidea Michx. var. pseudoscirpoidea (Rydb.) Cronquist (CASCP2)   

Western Singlespike Sedge: A Hardy Native for Specialized Gardens If you’re looking for a tough, low-maintenance native plant that can handle challenging conditions, the western singlespike sedge might just be your new best friend. This unassuming little sedge (Carex scirpoidea pseudoscirpoidea) packs a lot of personality into its petite frame, ...

Western Singlespike Sedge: A Hardy Native for Specialized Gardens

If you’re looking for a tough, low-maintenance native plant that can handle challenging conditions, the western singlespike sedge might just be your new best friend. This unassuming little sedge (Carex scirpoidea pseudoscirpoidea) packs a lot of personality into its petite frame, making it a surprisingly versatile addition to the right garden setting.

Meet the Western Singlespike Sedge

Don’t let the scientific name intimidate you – this charming native sedge is actually quite approachable once you get to know it. As a perennial graminoid (that’s fancy talk for grass-like plant), it belongs to the sedge family and shares their reputation for being incredibly adaptable and resilient.

You might also encounter this plant listed under its botanical synonyms: Carex pseudoscirpoidea or Carex scirpoidea var. pseudoscirpoidea. But whatever name it goes by, this little sedge has the same great qualities that make it worth considering for your garden.

Where It Calls Home

The western singlespike sedge is a true westerner, native to both Canada and the United States. You’ll find it naturally growing across a impressive range that includes:

  • British Columbia
  • California
  • Colorado
  • Idaho
  • Montana
  • Nevada
  • Oregon
  • Utah
  • Washington
  • Wyoming

This wide distribution tells us something important: this sedge is incredibly adaptable to different climates and conditions across the western landscape.

Why Consider Western Singlespike Sedge?

So why might you want to invite this native sedge into your garden? Here are some compelling reasons:

  • True native credentials: Supporting local ecosystems by choosing plants native to your region
  • Low maintenance: Once established, it’s remarkably self-sufficient
  • Drought tolerance: Perfect for water-wise gardening
  • Unique texture: Adds fine, grass-like texture to plantings
  • Hardy nature: Thrives in USDA zones 3-7

Perfect Garden Situations

Western singlespike sedge isn’t necessarily the star of every garden show, but it shines in specific situations:

  • Rock gardens: Its compact size and drought tolerance make it ideal for tucking between stones
  • Alpine gardens: Naturally adapted to harsh mountain conditions
  • Native plant gardens: A wonderful choice for authentic regional plantings
  • Naturalized areas: Great for areas where you want a natural, unmaintained look
  • Ground cover: Slowly spreads to form attractive colonies

Growing Conditions and Care

One of the best things about western singlespike sedge is how easy-going it is about growing conditions:

  • Sunlight: Adaptable to full sun or partial shade
  • Soil: Tolerates poor soils and prefers well-drained conditions
  • Water: Drought tolerant once established, though appreciates occasional water
  • Hardiness: Cold hardy in zones 3-7

Planting and Care Tips

Getting started with western singlespike sedge is refreshingly straightforward:

  • Plant in spring or fall for best establishment
  • Space plants according to desired coverage – they’ll slowly spread over time
  • Water regularly the first season to help establish roots
  • Once established, minimal watering needed
  • No fertilizing necessary – this sedge prefers lean conditions
  • Little to no pruning required

Wildlife and Ecosystem Benefits

While western singlespike sedge might not be the showiest pollinator magnet, it provides valuable ecosystem services. As a wind-pollinated plant, it offers habitat structure for small insects and contributes to the complex web of native plant communities. Its seeds may also provide food for small birds and rodents.

Is This Sedge Right for You?

Western singlespike sedge is perfect for gardeners who appreciate subtle beauty and want to support native ecosystems without a lot of fuss. It’s particularly well-suited for those with challenging growing conditions – poor soil, limited water, or harsh climates.

However, if you’re looking for bold color or dramatic seasonal changes, this might not be your plant. Its appeal lies in its quiet reliability and authentic regional character rather than flashy garden performance.

For gardeners in the western United States and Canada, western singlespike sedge offers an opportunity to connect with the natural heritage of their region while creating beautiful, sustainable landscapes that work with nature rather than against it.

Western Singlespike 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 scirpoidea Michx. - northern singlespike sedge

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