grass

Greater Tussock-Sedge

Carex paniculata

The Story

Plant Bio

Carex paniculata, the greater tussock-sedge, is a robust, densely tufted perennial sedge native to Europe, western Asia, and North Africa that forms massive, woody pedestal-like stools over time. The stiff, dark green leaves are linear and folded along the midvein, featuring sharp, rough margins due to high silica content.

This species is distinguished by its large, heavily branched compound panicles of brownish-green spikelets that rise up to five feet tall from late spring through summer. Unlike many smaller sedges, its persistent dead foliage and root mass accumulate to build a prominent elevated trunk or tussock in wet soils.

Uses & Benefits:

Provides a dramatic, architectural presence in wet areas with its massive, elevated tussocks and textured, dark green foliage.

Excellent for stabilizing wet soil banks and managing stormwater runoff in rain gardens or bioswales.

Offers vital nesting material and dense protective cover for wetland birds and small mammals, while its seeds feed granivorous birds.

Essentials

At a Glance

Plant Type

Grass

Height

59"

Width

59"

Light

Full Sun, Partial Sun

Zones

5, 6, 7, 8, 9

Water

High

Humidity

High

Lifespan

Long-lived

Native To

Europe, Western Asia, North Africa

Toxicity

Non-toxic

Bloom period

Late spring – Late summer

In flower about 4 months of the year

Planting

How to Grow

Select a site with full sun to partial shade and consistently wet, organic, or peaty soil.
Dig a hole twice the width of the root ball and set the plant at the same depth it was growing in its container.
Water thoroughly immediately after planting to settle the soil around the roots.
Maintain constant soil moisture, ensuring the ground never dries out completely during establishment.

Pro Tip

Never shear this sedge down to the ground or cut into the woody, leafless stool at the base; pruning into this old wood prevents regeneration and will kill the plant.

Keep It Thriving

Care Guide

Do

Keep the soil consistently damp or wet to mimic its natural fen and bog habitats.
Clear away dead or tattered outer leaves in early spring by gently pulling them from the base.
Use organic mulch like composted leaf mold to help retain soil moisture around the root zone.

Don't

Do not cut back into the old, woody pedestal or stool, as it cannot regenerate from bare wood.
Do not apply heavy synthetic fertilizers, which can cause rapid nutrient stress and foliage burn.
Do not allow the soil to dry out completely, especially during hot summer periods.

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Divide
Pest Check
Propagate
Spring Cleanup

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Rain gardensBog gardensPond marginsWetland restoration

Companion Plants

Iris versicolor Caltha palustris

Multiply

Propagation Methods

Good to Know

Common Questions

Greater Tussock-Sedge questions

What zones can Greater Tussock-Sedge grow in?

Greater Tussock-Sedge is hardy in USDA Zones 5–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

When does Greater Tussock-Sedge bloom?

Greater Tussock-Sedge typically blooms in late spring through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Greater Tussock-Sedge need full sun?

Greater Tussock-Sedge does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.