1 named cultivar

‘Variegata’Variegated Black Sedge

perennialN. America Native

Variegated Black Sedge

The Story

Plant Bio

Carex nigra, black sedge, is a low spreading sedge found across Europe and northern North America, forming tufts six to nine inches high that run by rhizomes to one to three feet across. The narrow foliage is dark blue-green to blue-grey with a powdery white underside, and stays evergreen except in the coldest gardens. Black flower spikes appear in April.

It is one of the few sedges that will grow in shallow standing water as readily as in wet ground, taking three or four inches over the crown without complaint. The dark, almost black flower and seed heads over blue-grey foliage are a genuinely unusual combination and read best when the plant is massed rather than dotted.

Uses & Benefits:

Blue-grey evergreen foliage with white-backed blades, topped by unusually dark flower and seed heads.

Grows in wet ground and shallow standing water where most ground covers fail, and holds eroding margins.

Native across northern North America; sedge stands shelter invertebrates and stabilise wet soil.

Essentials

At a Glance

Plant Type

Perennial

Height

8 inches

Width

24 inches

Light

Partial Sun, Shade

Zones

4, 5, 6, 7, 8, 9

Water

High

Humidity

High

Lifespan

Perennial

Native To

Europe and northern North America

Toxicity

Non-toxic

Planting

How to Grow

Plant in spring in part to full shade.
Choose wet soil, or a pond margin in shallow water.
Space plants about a foot apart to knit into cover.
Never allow the soil to dry out.
Comb out dead foliage in late winter rather than shearing.
Divide congested clumps every few years.

Pro Tip

In hot climates it needs constant moisture rather than more shade; drying out is what ruins the blue-grey foliage colour.

Keep It Thriving

Care Guide

Do

Keep the soil wet at all times 💧
Grow it in part to full shade 🌳
Mass it for the black flower heads to register 🌾
Comb out dead growth in late winter 🧹

Don't

Let the soil dry out, especially in heat ❌
Shear it hard like an ornamental grass ❌
Plant it in dry, sunny ground ❌

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Divide
Tidy

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Pond margin and water garden plantingGround cover for wet shadeRock garden in a consistently damp position

Companion Plants

Siberian Iris Astilbe LigulariaSweet Flag Ostrich Fern

Multiply

Propagation Methods

Good to Know

Common Questions

Variegated Black Sedge questions

What zones can Variegated Black Sedge grow in?

Variegated Black Sedge is hardy in USDA Zones 4–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Variegated Black Sedge deer resistant?

Not reliably. Deer may browse Variegated Black Sedge, especially tender spring growth — plan on repellents or fencing where pressure is high.

When does Variegated Black Sedge bloom?

Variegated Black Sedge typically blooms in mid-spring; flowers dark and inconspicuous through late fall. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Variegated Black Sedge need full sun?

Variegated Black Sedge does best in part shade.