How much sun does Tall Horned Beaksedge need?

Tall Horned Beaksedge grows best in part sun conditions.

When does Tall Horned Beaksedge bloom?

Tall Horned Beaksedge blooms in June, July, August, and September.

Where is Tall Horned Beaksedge native?

Tall Horned Beaksedge (Rhynchospora macrostachya) is native to AL, AR, CT, DE and 21 more states, per the World Checklist of Vascular Plants (Kew).

What pollinators does Tall Horned Beaksedge attract?

Tall Horned Beaksedge draws bees and beetles.

Is Tall Horned Beaksedge HOA-friendly?

Tall Horned Beaksedge takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.

Tall Horned Beaksedge

Name: Pollinator Patch
Author: Pollinator Patch

Rhynchospora macrostachya

Last reviewed: August 2026

Toxicity unknown

Tall Horned Beaksedge (Rhynchospora macrostachya) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.

Light

part sun

Water

high

Size

12"–36" H × 6"–18" W

Bloom

Jun, Jul, Aug, Sep

Native to

AL, AR, CT, DE and 21 more states

Pollinators

bees, beetles

Before you buy

Your city may pay you to plant this

Cities and water utilities offer rebates for replacing lawn with native and water-wise plants. We track 445 programs across 44 states, each with a link to the provider and the date we last checked it.

Find rebates in your area

Browse plants for this ecoregion

Northern Lakes and Forests Southern Michigan/Northern Indiana Drift Plains Northeastern Coastal Zone Middle Atlantic Coastal Plain Southeastern Plains Interior Plateau Southern Coastal Plain Atlantic Coastal Pine Barrens

Rhynchospora macrostachya is a native sedge that forms neat clumps of slender stems topped with distinctive brownish flower clusters. This wetland plant thrives in consistently moist to wet soils and provides an attractive upright texture in rain gardens and bog plantings. It blooms from June through September with small but interesting seed heads.

In an HOA neighborhood

Tall Horned Beaksedge takes more care to keep looking intentional in a front yard. Maintenance level: low. Consider it for backyard or mid-zone beds rather than the street edge.

Works well in: backyard only.

Sedge appearance may be mistaken for weedy grass
Brown seed heads can look unkempt to conventional gardeners
Requires consistently wet conditions that may appear problematic

Wildlife value

The flowers attract bees and beetles during the long summer blooming period. The seeds provide food for wetland birds and small mammals.

Common questions

How much sun does Tall Horned Beaksedge need?: Tall Horned Beaksedge grows best in part sun conditions.
When does Tall Horned Beaksedge bloom?: Tall Horned Beaksedge blooms in June, July, August, and September.
Where is Tall Horned Beaksedge native?: Tall Horned Beaksedge (Rhynchospora macrostachya) is native to AL, AR, CT, DE and 21 more states, per the World Checklist of Vascular Plants (Kew).
What pollinators does Tall Horned Beaksedge attract?: Tall Horned Beaksedge draws bees and beetles.
Is Tall Horned Beaksedge HOA-friendly?: Tall Horned Beaksedge takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.

Native range data from the World Checklist of Vascular Plants (Kew). Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

Ready to grow Tall Horned Beaksedge? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.

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