North America Native Plant

Long’s Sedge

Botanical name: Carex longii

USDA symbol: CALO5

Life cycle: perennial

Habit: grass

Native status: Native to Canada âš˜ Non-native, reproduces and persists in the wild in Hawaii âš˜ Native to the lower 48 states âš˜ Non-native, reproduces and persists in the wild in Puerto Rico  

Long’s Sedge: A Versatile Native Sedge for Wet Gardens If you’re looking for a hardy, low-maintenance native plant that thrives in those tricky wet spots in your yard, Long’s sedge (Carex longii) might just be your new best friend. This unassuming perennial sedge is one of nature’s problem-solvers, turning soggy ...

Long’s Sedge: A Versatile Native Sedge for Wet Gardens

If you’re looking for a hardy, low-maintenance native plant that thrives in those tricky wet spots in your yard, Long’s sedge (Carex longii) might just be your new best friend. This unassuming perennial sedge is one of nature’s problem-solvers, turning soggy soil challenges into gardening opportunities.

What Is Long’s Sedge?

Long’s sedge is a clumping perennial sedge that belongs to the grass-like plant family. Don’t let the grass-like description fool you though – sedges are actually quite different from true grasses, and this one has some pretty impressive superpowers when it comes to handling wet conditions.

As a native species, Carex longii has deep roots in North American ecosystems (literally and figuratively). It’s naturally found across a wide geographic range, thriving from southern Canada down through much of the United States, including Alabama, Arkansas, California, Connecticut, Delaware, Florida, Georgia, Illinois, Indiana, Kentucky, Louisiana, Maryland, Massachusetts, Michigan, Mississippi, Missouri, New Jersey, New York, North Carolina, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, Tennessee, Texas, Vermont, Virginia, Washington, West Virginia, and Wisconsin. You’ll also find it in Canadian provinces like Nova Scotia and Ontario, and it has established populations in Hawaii and Puerto Rico.

Why Choose Long’s Sedge for Your Garden?

This sedge really shines when it comes to wetland gardening. In most regions, it’s classified as an Obligate Wetland plant, meaning it almost always occurs naturally in wetlands. However, it can be a bit more flexible in some areas – in the Arid West, Caribbean, and Hawaii, it’s listed as Facultative Wetland, meaning it usually prefers wet spots but can handle some drier conditions.

Here’s what makes Long’s sedge a great garden choice:

  • Excellent for rain gardens and bioswales
  • Provides natural erosion control along water features
  • Low maintenance once established
  • Adds fine-textured foliage interest to wet areas
  • Forms attractive clumps that naturalize beautifully
  • Hardy across USDA zones 3-9

Garden Design and Landscape Uses

Long’s sedge works wonderfully in several garden styles and situations. It’s particularly valuable in:

  • Rain gardens: Perfect for managing stormwater runoff
  • Pond and stream margins: Creates natural-looking transitions
  • Wetland restoration projects: Helps establish native plant communities
  • Naturalized landscapes: Blends seamlessly with other native wetland plants
  • Bog gardens: Thrives in consistently moist conditions

The plant forms dense tufts of narrow, arching green leaves that provide a lovely fine texture in the landscape. In spring, you’ll notice small, inconspicuous brownish flower spikes – while they won’t win any beauty contests, they’re an important food source for birds.

Growing Conditions and Care

Long’s sedge is refreshingly straightforward to grow, especially if you have the right conditions:

Moisture: This plant loves consistently moist to wet soil and can handle seasonal flooding like a champ. If you have a spot that stays soggy after rain or never quite dries out, this could be perfect.

Light: Adaptable to full sun through partial shade, though it tends to be most vigorous with at least some direct sunlight.

Soil: Not particularly picky about soil type as long as it stays moist. It can handle everything from sandy to clay soils.

Planting and Establishment Tips

Getting Long’s sedge established is pretty straightforward:

  • Plant in spring for best establishment
  • Space plants 12-18 inches apart for good coverage
  • Water regularly during the first growing season
  • Once established, it’s quite drought tolerant (though it prefers consistent moisture)
  • Little to no fertilizer needed – it’s adapted to naturally nutrient-rich wetland soils

Wildlife Benefits

While Long’s sedge might not be a showy pollinator magnet (it’s wind-pollinated), it provides valuable ecosystem services. The seeds are an important food source for various bird species, and the dense growth provides shelter for small wildlife. In wetland settings, it contributes to the complex plant community that supports diverse wildlife.

Is Long’s Sedge Right for Your Garden?

Long’s sedge is an excellent choice if you:

  • Have consistently moist or wet areas that need plants
  • Want to create a rain garden or bioswale
  • Are working on wetland restoration or naturalized landscaping
  • Prefer low-maintenance native plants
  • Need erosion control near water features

However, it might not be the best fit if you have dry garden areas or are looking for showy flowering plants. For drier native alternatives, consider other native grasses and sedges adapted to your specific region and conditions.

Long’s sedge proves that sometimes the most valuable garden plants are the quiet workhorses that solve problems while supporting local ecosystems. In the right wet spot, this sedge will reward you with years of low-maintenance beauty and ecological benefits.

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

Arid West

FACW

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

Atlantic and Gulf Coastal Plain

OBL

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

Caribbean

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

OBL

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

Hawaii

FAC

Facultative - Plants with this status can occur in wetlands and non-wetlands

Midwest

OBL

Obligate Wetland - Plants with this status almost always occurs in 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

Long’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 longii Mack. - Long'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