North America Native Plant

Button Sedge

Botanical name: Carex bullata

USDA symbol: CABU7

Life cycle: perennial

Habit: grass

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

Button Sedge: A Hidden Gem for Your Wetland Garden If you’re looking to add some authentic native charm to your wet garden spots, button sedge (Carex bullata) might just be the perfect plant you’ve never heard of. This unassuming perennial sedge packs a lot of personality into its compact, grass-like ...

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) ⚘

Button Sedge: A Hidden Gem for Your Wetland Garden

If you’re looking to add some authentic native charm to your wet garden spots, button sedge (Carex bullata) might just be the perfect plant you’ve never heard of. This unassuming perennial sedge packs a lot of personality into its compact, grass-like form and has been quietly thriving in North America’s wetlands for centuries.

What Makes Button Sedge Special?

Button sedge gets its charming common name from its distinctive seed heads that look like tiny buttons perched atop slender stems. This native sedge forms attractive, dense clumps of narrow green leaves that add wonderful texture to any garden. As a true perennial, it comes back year after year, slowly spreading to create natural-looking colonies that feel right at home in wet environments.

Where Button Sedge Calls Home

This sedge is a true North American native, naturally occurring across a wide swath of the eastern United States and southeastern Canada. You’ll find wild populations thriving from Nova Scotia down to Georgia, and as far west as Arkansas. It grows happily in states including Connecticut, Delaware, Maine, Maryland, Massachusetts, New Hampshire, New Jersey, New York, North Carolina, Pennsylvania, Rhode Island, South Carolina, Tennessee, and Virginia, plus the District of Columbia.

A Word About Rarity

Here’s something important to know: button sedge is considered critically imperiled (S1 status) in Arkansas, meaning it’s quite rare there. If you’re planning to add this beauty to your garden, please make sure you source your plants responsibly from reputable native plant nurseries rather than collecting from wild populations. This helps protect the species while still allowing you to enjoy it in your landscape.

Perfect Spots for Button Sedge

Button sedge absolutely loves wet feet – and we mean really wet! This plant is classified as an obligate wetland species, which means it almost always occurs in wetland conditions. It’s perfect for:

  • Rain gardens and bioswales
  • Pond margins and stream banks
  • Bog gardens and wetland restorations
  • Areas with seasonal flooding
  • Naturalized wet meadows

If you have a spot in your yard that stays consistently moist or even soggy – you know, that area where other plants struggle – button sedge might be exactly what you need.

Growing Button Sedge Successfully

The good news is that once you understand its needs, button sedge is relatively low-maintenance. Here’s what this wetland lover requires:

Light: Button sedge is quite adaptable, thriving in full sun to partial shade. It’s particularly happy with morning sun and some afternoon protection in hotter climates.

Water: This is non-negotiable – button sedge needs consistently moist to wet soil. Think bog-like conditions rather than just moist. It can handle seasonal flooding and won’t complain about standing water.

Soil: While it’s not particularly picky about soil type, button sedge prefers organic-rich, somewhat acidic soils that retain moisture well.

Hardiness: This tough little sedge can handle cold winters in USDA zones 3-8, making it suitable for most of the northern and temperate United States.

Planting and Care Tips

Spring is the ideal time to plant button sedge, giving it a full growing season to establish before winter. Here are some tips for success:

  • Choose your location carefully – remember, this plant needs wet conditions year-round
  • Space plants about 12-18 inches apart for eventual coverage
  • Water regularly during the first growing season, though this shouldn’t be hard given its preferred wet conditions
  • Minimal fertilization needed – these plants are adapted to nutrient-poor wetland soils
  • Cut back old foliage in late winter or early spring before new growth begins

Wildlife and Ecological Benefits

While button sedge is wind-pollinated and doesn’t attract pollinators in the traditional sense, it still provides valuable ecosystem services. The dense clumps offer shelter and nesting sites for small wildlife, and the seeds provide food for various bird species. Plus, by choosing native plants like button sedge, you’re supporting the complex web of relationships that native wildlife depends on.

Is Button Sedge Right for Your Garden?

Button sedge is an excellent choice if you have consistently wet areas in your landscape and want to embrace rather than fight those conditions. It’s perfect for gardeners interested in native plants, ecological restoration, or creating habitat for wildlife. However, it’s definitely not the plant for dry or even moderately moist locations – this sedge is committed to the wetland lifestyle.

If you’re looking to add authentic native character to wet spots while supporting local ecosystems, button sedge deserves serious consideration. Just remember to source it responsibly and give it the soggy conditions it craves, and you’ll have a charming, low-maintenance addition that truly belongs in the North American landscape.

Button 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 bullata Schkuhr ex Willd. - button sedge

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