North America Native Plant

Houghton’s Flatsedge

Botanical name: Cyperus houghtonii

USDA symbol: CYHO

Life cycle: perennial

Habit: grass

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

Houghton’s Flatsedge: A Hardy Native Sedge for Wet Spots in Your Garden If you’ve got a soggy spot in your yard that seems impossible to plant, meet your new best friend: Houghton’s flatsedge (Cyperus houghtonii). This unassuming native sedge might not win any beauty contests, but it’s a workhorse when ...

Houghton’s Flatsedge: A Hardy Native Sedge for Wet Spots in Your Garden

If you’ve got a soggy spot in your yard that seems impossible to plant, meet your new best friend: Houghton’s flatsedge (Cyperus houghtonii). This unassuming native sedge might not win any beauty contests, but it’s a workhorse when it comes to handling wet conditions that would make other plants throw in the towel.

What Exactly is Houghton’s Flatsedge?

Houghton’s flatsedge is a 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. This particular species is a hardy native that’s been quietly doing its job in wetlands and moist areas across North America for centuries.

As a member of the sedge family (Cyperaceae), it shares characteristics with other grass-like plants including rushes and true grasses, but sedges have their own unique charm and ecological role.

Where Does It Call Home?

This adaptable native has quite an impressive range! Houghton’s flatsedge is native to both Canada and the lower 48 states, thriving across a wide swath of North America. You’ll find it naturally occurring in Manitoba, Ontario, Quebec, Illinois, Indiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, New Hampshire, New York, North Carolina, Ohio, Pennsylvania, Vermont, Virginia, West Virginia, and Wisconsin.

That’s a pretty impressive resume for such a modest little plant! Its wide distribution tells us it’s adaptable and resilient – always good traits in a garden plant.

Why Would You Want This Plant?

Let’s be honest – Houghton’s flatsedge isn’t going to be the star of your flower border. But here’s where it shines:

  • Wet area solution: It thrives in consistently moist to wet soils where other plants struggle
  • Low maintenance: Once established, it pretty much takes care of itself
  • Native plant benefits: Supports local ecosystems and requires no special care
  • Erosion control: Its spreading habit helps stabilize wet soil
  • Wildlife support: Seeds provide food for birds and small wildlife

Perfect Spots for Houghton’s Flatsedge

This sedge is ideal for several specific garden situations:

  • Rain gardens: Excellent for managing stormwater runoff
  • Pond edges: Creates natural-looking transitions around water features
  • Wet meadows: Perfect for naturalized areas that stay moist
  • Native plant gardens: Adds authentic local character
  • Restoration projects: Great for wetland restoration efforts

Growing Conditions and Care

The good news is that if you have the right spot, Houghton’s flatsedge is pretty easy to please:

Light: Full sun to partial shade – it’s quite flexible
Soil: Consistently moist to wet soils; can handle seasonal flooding
Hardiness: Zones 3-7, so it can handle some serious cold
Water: Loves wet feet – this is not a plant for dry conditions

Planting and Care Tips

Getting started with Houghton’s flatsedge is refreshingly straightforward:

  • Plant in spring: Give it a full growing season to establish before winter
  • Keep it wet: Consistent moisture is non-negotiable for this species
  • Space appropriately: It spreads by underground rhizomes, so give it room to roam
  • Minimal fertilizing: As a native, it doesn’t need extra nutrients
  • Let it naturalize: This plant looks best when allowed to spread and form colonies

Is This Plant Right for Your Garden?

Houghton’s flatsedge is definitely a specialized plant for specific situations. Consider it if you:

  • Have wet areas that are difficult to plant
  • Want to create natural-looking wetland areas
  • Are interested in native plant gardening
  • Need erosion control in moist areas
  • Want low-maintenance groundcover for wet spots

However, skip this one if you’re looking for showy flowers, have only dry garden areas, or want a neat, controlled appearance – this sedge is all about that wild, naturalized look.

The Bottom Line

Houghton’s flatsedge might not be the most glamorous plant in the native plant world, but it’s incredibly valuable for the right situation. If you’ve been struggling with wet areas in your landscape, this hardy native sedge could be exactly what you need to turn that problem spot into a thriving, low-maintenance feature that supports local wildlife and looks naturally beautiful year after year.

Houghton’s Flatsedge

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

Cyperus L. - flatsedge

Species

Cyperus houghtonii Torr. - Houghton's flatsedge

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