Plantain-leaved sedge

Carex plantaginea

In other languages: Carex plantaginea (Nederlands) · Carex plantaginea (Français)

Carex plantaginea is a sedge from the deciduous woodlands of eastern North America. Unlike most sedges, it has broad, deeply pleated leaves that look like those of plantain, hence its name. It forms a compact, evergreen clump 20–30 cm tall and up to 40 cm wide. In April and May it carries small, slender flower spikes, but the real value is the fresh green foliage, which brightens the shade garden all year. A calm, easy plant for under trees and alongside hostas and ferns.

Updated on 9 October 2026

Light
Partial shade or shade
tolerates little sun
Moisture
Normal
no wet feet
Legal basis
Loam or clay
neutral to chalky
Hardiness
Fully hardy
down to -30 °C
Size
0.3 m
tall, 0.4 m wide
Flowering
April–May

Key facts
Pruning months	March
Height	0.3 m
Native to Belgium	No, planted
Poisonous to people and pets	Not known to be poisonous
Flowering	April–May

Identify

Plantain-leaved sedge: how do you recognise it?

Habit: Compact, slowly spreading clump 20–30 cm tall and 30–40 cm wide.
Leaves: About 3 cm wide, deeply pleated, fresh green with a slight shine; evergreen.
Flowers: Slender, discreet flower spikes on thin stems, in April–May.
Seed: Small nutlets in the spikes, ripe in summer.
Roots: Fibrous roots and short rhizomes; it slowly builds up a clump.

Flowering: April–May · Plants: March–May and September–October · Pruning: March

In your garden

Why grow it?

Broad, fresh green, pleated leaves give shady borders a distinctive texture.
Evergreen: still green in the shade garden in winter.
Flowers early, in April–May, with graceful slender spikes.
Little work: no pruning, no feeding and hardly any diseases.
A well-behaved clump that does not run, and goes well with hostas and ferns.

Plantain-leaved sedge: where does it grow best?

Part shade to shade; in full sun the leaves scorch and turn yellowish.
Humus-rich, moisture-retentive but not wet soil: loam or clay, neutral to chalky.
Sheltered from cold, dry winter wind.
Allow 30–40 cm between plants; 25–30 cm as ground cover.

Light: Partial shade and shade
Soil type: Loam or clay
Acidity: Neutral or chalky
Moisture: Normal
Size: 0.3 m tall, 0.4 m wide
Hardiness: Hardy (to -30 °C)

Goes well with

Hosta: Large leaves beside the pleated sedge foliage; the same part shade.
Ferns: Fresh green underplanting with finer foliage.
Hellebore: Flowers in winter and is evergreen too.
Barrenwort: A carpet of leaves and small flowers in spring.
Lungwort: Spotted leaves and blue and pink flowers in early spring.

Maintenance

Plantain-leaved sedge: when and how to plant it?

Plant in March–May and September–October.

Plant in March–May or September–October, when the soil is neither frozen nor waterlogged.
Dig a hole twice as wide as the root ball and mix in some compost or leaf mould.
Set the plant at the same depth as in its pot, with the top of the root ball at soil level.
Firm the soil and water in generously straight away.
Spread leaf mould around the clump and keep the soil moist in the first year.

Care

Water: In the first year water weekly in dry weather. After that only in long dry spells, especially in drier spots.
Feeding: A layer of compost in spring is enough.
Mulching: Leaf mould in autumn keeps the soil moist, feeds it and suppresses weeds.
Tidying: In March remove brown or damaged leaves; leave the green ones.
Weeding: Weed by hand between young plants, carefully so the roots are not damaged.

Tip: Plant it against a dark background or among hostas: that shows off the bright green and the pleated texture best. Do not cut off brown foliage until the end of March.

Plantain-leaved sedge: when to prune it?

Pruning months: March.

When: Late February to March, before the new leaves come through. Real pruning is not needed.

How:

Pull or cut off brown and damaged leaves at the base.
If the clump looks very tatty after a hard winter, cut everything back to 5–10 cm; the foliage regrows quickly.
Leave healthy green leaves in place.

Pruning: when and how · Pruning calendar and basic rules

Propagation

Division: In March–April or September–October, cut a clump into pieces with a sharp spade; each piece needs roots and a few leaves. Replant at once and water.
Seed: Sow fresh seed in summer or autumn in pots of seed compost and leave them in the cold. Germination is slow and uneven; division is easier.

Plantain-leaved sedge: how does it get through the winter?

Hardy to −30 °C.

Very hardy, down to about −30 °C: no protection is needed.
The foliage stays green, but may fade or turn brown after hard frosts; cut it off in March.
In a pot: stand it against a wall and wrap the pot in hessian so the roots do not freeze.

Diseases and pests

Brown leaf tips: Usually caused by drought or too much sun. Water more and choose a shadier spot.
Slugs: Young leaves are sometimes nibbled in spring. Look for them in the evening and remove them by hand.
Wet feet: In heavy, wet clay the roots rot in winter. When planting, work in compost and a little sand.
Tatty winter foliage: Normal after a cold winter. Cut it off in March; new leaves will grow.

Through the year

March: Cut off brown leaves. Apply compost. Plant or divide.
April: Flowering. Plant.
May: Flowering ends. Plant. Weed.
June: Water in dry spells.
July: Seed ripens. Water in dry spells.
August: Water in dry spells.
September: Plant or divide.
October: Plant. Mulch with leaf mould.

You and this species

Did you know?

In English it is also called seersucker sedge, after the puckered fabric seersucker, because of its crinkled leaves.
The genus Carex is one of the largest plant genera, with more than 2,000 species.
Many sedges have triangular stems: you can feel the edges when you roll them between your fingers.

Garden plants · All species