North America Native Plant

Inland Sedge

Botanical name: Carex interior

USDA symbol: CAIN11

Life cycle: perennial

Habit: grass

Native status: Native to Alaska âš˜ Native to Canada âš˜ Native to the lower 48 states âš˜ Native to St. Pierre and Miquelon  

Synonyms: Carex interior L.H. Bailey ssp. charlestonensis Clokey (CAINC3)  âš˜  Carex interior L.H. Bailey var. keweenawensis F.J. Herm. (CAINK)   

Inland Sedge: A Quiet Champion for Wet Gardens If you’re looking for a native plant that thrives where others fear to tread – namely, in consistently soggy soil – then inland sedge (Carex interior) might just be your new best friend. This unassuming little sedge doesn’t win any beauty contests, ...

Rare plant alert!

Region: Arkansas

Status: S1: Status is uncertain but is somewhere between the following rankings: Critically Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 5 or fewer occurrences or very few remaining individuals (<1,000) ⚘

Inland Sedge: A Quiet Champion for Wet Gardens

If you’re looking for a native plant that thrives where others fear to tread – namely, in consistently soggy soil – then inland sedge (Carex interior) might just be your new best friend. This unassuming little sedge doesn’t win any beauty contests, but what it lacks in flashy flowers, it makes up for in reliability and ecological value.

What is Inland Sedge?

Inland sedge is a perennial grass-like plant that belongs to the sedge family. Don’t let the grass-like description fool you though – sedges have their own personality. This particular species goes by the botanical name Carex interior and grows in small, well-behaved clumps that reach about 1.5 feet tall. It’s got fine-textured green foliage that stays relatively modest in the landscape, making it more of a supporting player than a showstopper.

Where Does It Grow Naturally?

Talk about a well-traveled plant! Inland sedge is native to an impressively wide range across North America, including Alaska, Canada, and most of the lower 48 states. You’ll find it naturally occurring from the Atlantic coast to the Pacific, and from the northern territories down to states like Arkansas and Tennessee. It’s particularly at home in the northern regions but adapts to various climates across this broad range.

Why Would You Want to Grow Inland Sedge?

Here’s where inland sedge really shines: it’s an obligate wetland plant, meaning it almost always occurs in wetlands. If you have that perpetually soggy spot in your yard where other plants turn up their toes, this sedge will happily call it home. Here are some reasons to consider it:

  • Perfect for rain gardens, bog gardens, and pond margins
  • Excellent for naturalistic landscaping and restoration projects
  • Requires minimal maintenance once established
  • Supports local ecosystems and wildlife habitat
  • Cold hardy and drought intolerant (which is perfect if you have wet conditions)

Growing Conditions and Care

Inland sedge is refreshingly straightforward about its needs – it wants to be wet, and it wants to stay wet. Here’s what you need to know:

Soil: This plant prefers fine to medium-textured soils and can handle pH levels between 5.4 and 7.2. It’s adapted to handle anaerobic (low oxygen) conditions, which makes sense given its wetland preference.

Water: High moisture use is the name of the game. Don’t even think about planting this in a dry spot – it has low drought tolerance and will let you know it’s unhappy.

Light: Inland sedge tolerates a range from full sun to partial shade, making it quite flexible for different garden situations.

Hardiness: This tough little sedge can handle temperatures down to -38°F, making it suitable for USDA zones 3-8.

Planting and Maintenance Tips

The good news is that inland sedge is relatively low-maintenance once you get it established:

  • Plant in spring when active growth begins
  • Space plants about 12-18 inches apart (roughly 2,700-4,800 plants per acre if you’re doing a large installation)
  • Keep soil consistently moist – this is non-negotiable
  • Growth rate is slow, so be patient as it establishes
  • Minimal fertilizer needs – medium fertility requirements
  • No pruning necessary, though you can cut back old foliage in early spring

A Note About Rarity

If you’re gardening in Arkansas, it’s worth noting that inland sedge has a rare status (S1) in that state. This means you should source your plants responsibly from reputable nurseries rather than collecting from wild populations. Always choose nursery-grown plants to help protect wild populations.

Wildlife and Ecological Benefits

While inland sedge might not be a pollinator magnet (it’s wind-pollinated), it plays an important role in wetland ecosystems. Its dense root system helps with erosion control, and it provides habitat structure for various wetland creatures. The seeds, though not abundantly produced, can provide food for waterfowl and other wildlife.

Is Inland Sedge Right for Your Garden?

Inland sedge is perfect if you have wet conditions and want a native plant that won’t give you headaches. It’s not the plant for dry gardens or for gardeners seeking bold, colorful displays. But if you’re creating a rain garden, restoring a wetland area, or just trying to make peace with that soggy corner of your yard, inland sedge could be exactly what you need.

Think of it as the quiet, dependable friend of the plant world – not flashy, but always there when you need it, especially when conditions get tough and wet.

Inland 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 interior L.H. Bailey - inland sedge

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