North America Native Plant

Sartwell’s Sedge

Botanical name: Carex sartwellii

USDA symbol: CASA8

Life cycle: perennial

Habit: grass

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

Sartwell’s Sedge: A Native Wetland Wonder for Your Garden If you’re looking to add some authentic North American charm to your garden while supporting local ecosystems, Sartwell’s sedge (Carex sartwellii) might just be your new best friend. This unassuming but incredibly valuable native sedge has been quietly doing its job ...

Sartwell’s Sedge: A Native Wetland Wonder for Your Garden

If you’re looking to add some authentic North American charm to your garden while supporting local ecosystems, Sartwell’s sedge (Carex sartwellii) might just be your new best friend. This unassuming but incredibly valuable native sedge has been quietly doing its job across the continent for thousands of years, and it’s ready to do the same in your landscape.

What Makes Sartwell’s Sedge Special?

Don’t let the humble appearance fool you – this perennial sedge is a true workhorse in the garden. As a member of the sedge family (Cyperaceae), it’s technically a grass-like plant that forms attractive, dense tufts of narrow, arching green foliage. In late spring and early summer, it produces subtle brownish flower spikes that add textural interest without being showy.

What really sets Sartwell’s sedge apart is its impressive native credentials. This hardy perennial calls both Canada and the lower 48 states home, with a range that spans an impressive territory across North America.

Where Does It Grow Naturally?

Sartwell’s sedge has one of the most extensive natural ranges you’ll find in a native plant. It thrives across Canadian provinces including Alberta, British Columbia, Manitoba, Ontario, Quebec, Saskatchewan, Yukon, and the Northwest Territories. In the United States, you can find it growing wild in Colorado, Idaho, Illinois, Indiana, Iowa, Kansas, Maryland, Michigan, Minnesota, Missouri, Montana, Nebraska, New York, North Dakota, Ohio, Pennsylvania, South Dakota, Wisconsin, and Wyoming.

The Wetland Connection

Here’s where things get really interesting – Sartwell’s sedge is what botanists call a wetland specialist. Depending on your region, it ranges from being an obligate wetland plant (meaning it almost always occurs in wetlands) to a facultative wetland plant (usually in wetlands but sometimes in drier spots). This wetland preference makes it absolutely perfect for:

  • Rain gardens that manage stormwater runoff
  • Pond and stream margins
  • Bog gardens and wetland restorations
  • Areas with seasonal flooding
  • Low-lying spots in your yard that stay consistently moist

Why Your Garden (and Local Wildlife) Will Love It

While Sartwell’s sedge might not win any flashy flower contests, it’s an ecosystem superstar. This sedge provides valuable habitat and nesting materials for various insects and small wildlife creatures. Its dense, tufted growth habit creates perfect hiding spots for beneficial insects, while the seeds (when they develop) can provide food for birds.

From a design perspective, this sedge excels as a naturalistic groundcover and erosion controller. It’s particularly valuable for gardeners working with challenging wet areas where many other plants would struggle or fail entirely.

Growing Sartwell’s Sedge Successfully

The beauty of working with native plants like Sartwell’s sedge is that they’re typically low-maintenance once you understand their preferences. Here’s what this sedge needs to thrive:

Ideal Growing Conditions

  • Moisture: Consistently moist to wet soil – this plant loves having wet feet
  • Light: Full sun to partial shade (quite adaptable)
  • Soil: Tolerates various soil types as long as they stay moist
  • Climate: Hardy in USDA zones 2-7, making it suitable for most northern climates

Planting and Care Tips

Getting started with Sartwell’s sedge is refreshingly straightforward:

  • Plant in spring or early fall when temperatures are moderate
  • Space plants 12-18 inches apart for groundcover effect
  • Water regularly during the first growing season to establish roots
  • Once established, it should thrive on natural rainfall in most climates
  • Cut back old foliage in late winter or early spring before new growth appears
  • Divide clumps every 3-4 years if you want to propagate or control spread

Perfect Garden Situations

Sartwell’s sedge shines brightest in naturalistic garden settings where you want to create authentic, low-maintenance plantings. Consider it for:

  • Rain gardens: Excellent for managing water runoff naturally
  • Wildlife gardens: Provides habitat while looking appropriately wild
  • Pond margins: Creates natural transitions between water and upland areas
  • Restoration projects: Perfect for recreating native wetland communities
  • Problem wet areas: Turns challenging soggy spots into attractive features

Is Sartwell’s Sedge Right for Your Garden?

This native sedge is an excellent choice if you have consistently moist growing conditions and appreciate plants that work well within natural ecosystems. It’s particularly valuable for gardeners interested in sustainable, low-maintenance landscaping that supports local wildlife.

However, if you’re looking for showy flowers or dramatic foliage, you might want to pair Sartwell’s sedge with more ornamental companions rather than relying on it as a star performer. Think of it as the reliable supporting actor that makes everything else look better while doing the important behind-the-scenes work.

With its extensive native range, excellent wetland credentials, and easy-going nature, Sartwell’s sedge represents exactly the kind of plant that can help gardeners create beautiful, ecologically valuable landscapes that truly belong in their local environment.

Wetland Status

The rule of seasoned gardeners and landscapers is to choose the "right plant for the right place" matching plants to their ideal growing conditions, so they'll thrive with less work and fewer inputs. But the simplicity of this catchphrase conceals how tricky plant selection is. While tags list watering requirements, there's more to the story.

Knowing a plant's wetland status can simplify the process by revealing the interaction between plants, water, and soil. Surprisingly, many popular landscape plants are wetland species! And what may be a wetland plant in one area, in another it might thrive in drier conditions. Also, it helps you make smarter gardening choices and grow healthy plants with less care and feeding, saving you time, frustration, and money while producing an attractive garden with greater ecological benefits.

Regions
Status
Moisture Conditions

Alaska

OBL

Obligate Wetland - Plants with this status almost always occurs in wetlands

Arid West

OBL

Obligate Wetland - Plants with this status almost always occurs in wetlands

Atlantic and Gulf Coastal Plain

FACW

Facultative Wetland - Plants with this status usually occurs in wetlands but may occur in non-wetlands

Eastern Mountains and Piedmont

OBL

Obligate Wetland - Plants with this status almost always occurs in wetlands

Great Plains

FACW

Facultative Wetland - Plants with this status usually occurs in wetlands but may occur in non-wetlands

Midwest

FACW

Facultative Wetland - Plants with this status usually occurs in wetlands but may occur in non-wetlands

Northcentral & Northeast

OBL

Obligate Wetland - Plants with this status almost always occurs in wetlands

Western Mountains, Valleys, and Coast

OBL

Obligate Wetland - Plants with this status almost always occurs in wetlands

Sartwell’s 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 sartwellii Dewey - Sartwell's sedge

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