Plantainleaf sedge

Sun

Partial to full shade; protect from hot afternoon sun.

Water

Keep evenly moist, especially while establishing. Established clumps tolerate brief dry spells, but prolonged drought damages the foliage.

Soil

Humus-rich, moist but well-drained soil; tolerates clay if it is not waterlogged.

Height

1-2 ft (0.3-0.6 m) in flower; foliage usually 0.5-1 ft (0.15-0.3 m)

Spread

1-1.5 ft (0.3-0.45 m)

Flowers

Early to mid-spring; small, inconspicuous greenish flowers with reddish-purple to brown scales on upright stems.

Foliage

Broad, arching, bright to deep green leaves with conspicuous lengthwise folds and a puckered, seersucker-like surface. Evergreen in mild winters and partly evergreen or winter-damaged in colder areas.

Growth

Slow to moderate

Care needed

Low

• Deer resistant
• Cold hardy
• Wildlife

Northern hemisphere months. In Australia, shift them by six.

Difficulty

Easy

Toughness

Fairly tough

Pick your zone, country, light and whether you have pets.

1. Planting day

   1.1 ft (0.35 m)

2. After 1 year

   1.2 ft (0.38 m)

3. After 2 years

   1.4 ft (0.41 m)

4. After 3 years

   1.5 ft (0.44 m)

5. After 5 years

   1.5 ft (0.45 m)

   full size

About 3 years to full size.

From a typical nursery size, at an average rate for this kind of plant. A rule of thumb, not a forecast.

Cats and dogs

Safe

Native to

the US and Canada

Growth rate

Slow

• Water new plants regularly through their first growing season, keeping the root zone moist but not saturated.
• During prolonged dry weather, water deeply before the leaves begin to brown.
• Apply a thin layer of leaf mould or compost in spring; routine fertiliser is usually unnecessary.
• Mulch around clumps with shredded leaves, keeping the crown uncovered.
• Divide crowded clumps in early spring if growth weakens or you want more plants.

Pruning. In late winter or early spring, remove dead or badly damaged leaves by hand or cut them near the base before new growth starts. Leave healthy green leaves intact rather than routinely shearing the whole clump.

Late winter

Check for frost-damaged leaves and remove them before fresh growth appears.

Early spring

Plant or divide clumps, then water thoroughly.

Spring

Top-dress with leaf mould or compost and renew the leaf mulch.

Summer

Water during extended dry spells and check for leaf scorch where sunlight reaches the bed.

Autumn

Retain a light covering of fallen leaves around plants, but remove thick, matted layers from the crowns.

• Plant in small groups along shaded paths, where the puckered leaves can be seen close up.
• Use beneath deciduous trees and shrubs where the soil remains moist.
• Combine with fine-textured ferns for a contrast in leaf size and shape.
• Edge a woodland border with repeated clumps for a low, textured foreground.

Garden styles it suits: Woodland, Green on green, Low-maintenance, Japanese and Secret garden.

Plant it with: Christmas fern, Lady fern, Wild ginger, Foamflower, Solomon's seal and Hosta.

Wildlife: Dense clumps provide shelter for small invertebrates. Like other sedges, it is wind-pollinated rather than a nectar plant for bees.

• Brown tips and scorched leaves usually indicate dry soil, drying wind or too much sun; water deeply and provide more shade.
• Crown or root rot can develop in persistently saturated soil; improve drainage and keep mulch away from the crown.
• Slugs and snails may chew young leaves; remove them by hand and reduce damp hiding places immediately around damaged plants.
• Winter burn can leave ragged brown foliage; wait until late winter or early spring to remove damaged leaves.

Not known to be toxic to people, cats, dogs or horses. No part is recognised as poisonous, although species-specific toxicity information is limited; it is not a food plant.

• Broad-leaved sedge (Carex platyphylla)

  Usually has blue-green or glaucous leaves rather than the glossy green, strongly puckered foliage of plantainleaf sedge.

• White bear sedge (Carex albursina)

  Also has broad green leaves, but they are generally flatter and lack the pronounced seersucker texture; flowering structures help confirm identification.

The species name plantaginea means plantain-like, referring to the broad leaves, while seersucker sedge describes their puckered texture.

Propagation. Divide established clumps in early spring, retaining roots and several shoots on each piece. Seed propagation is possible, but germination can be slow and irregular; sow fresh seed outdoors and allow exposure to seasonal cold.

Accepted botanical name

Carex plantaginea

In the US and Canada

Native in Canada and the lower 48 states.

Native range

Alabama, Connecticut, Georgia, Indiana, Iowa, Kentucky, Maine, Maryland, Masachusettes, Michigan, Minnesota and New Brunswick.

Sources: GBIF (CC BY 4.0), USDA PLANTS and Trefle (CC BY 4.0). The care and design notes are LandscapeGPT's own.