Carex pseudocyperus, known as cyperus sedge, is a UK native sedge with bright yellow-green leaves. In June and July it carries drooping, bristly, finger-shaped flower spikes on arching stems.

Cyperus sedge at a glance

Botanical name Carex pseudocyperus
Common name Cyperus sedge
Plant type Tufted sedge; dies back in winter
Height and spread About 1–1.5 m tall, 50–100 cm wide
Flowers Drooping, bristly, yellow-green spikes, June and July
Position Full sun or part shade
Soil Wet, poorly drained clay or loam; any pH
Pond depth Wet mud or very shallow water, with the crown just above the water
Hardiness RHS H6 – hardy in a very cold winter (-20 to -15°C)
Native to UK and Ireland (native wild plant)

Where to plant cyperus sedge

  • The edge of a wildlife pond, with the crown just above the water
  • Bog gardens and wet ground
  • Part-shaded spots: in the wild it tolerates shade in alder and willow woods

How to plant and care for it

Plant from spring to late summer in wet soil or a pond basket. It spreads slowly. Cut it back in autumn. It may get aphids or rust.

Is it legal to grow?

Yes. It is not on any restricted list. It is Near Threatened on the Welsh Red List and rare in some counties, so buy nursery-grown plants and never collect it from the wild.

Which size should I buy?

Bare-root plants (7 cm, 9 cm, 1 litre and 3 litre) arrive without a pot or compost and are the most economical way to plant a group. Potted plants (9 cm, 1 litre and 3 litre) arrive growing in our peat-free compost and give a faster display. Packs of 3 come in 7 cm, 9 cm, 1 litre and 3 litre bare-root sizes and cost less per plant. The 2x Pot & Compost option is two plants supplied with pots and compost.

Pond depth: 0 - 5cm

Light: Full sun or part shade

Hardiness: Hardy

Height and spread: 120cm+ tall, 50 - 100cm wide

Planting and flowering months are shown in the calendar under the photos.

Bare root (7 cm, 9 cm, 1 litre, 3 litre): plants sent without a pot or compost, ready to plant straight away. The most economical way to plant a group.

Potted (9 cm, 1 litre, 3 litre): plants growing in our recycled, peat-free compost made in Lincolnshire. Larger sizes give a faster display.

Pack of 3 (7 cm bare-root, 9 cm bare-root, 1 litre bare-root, 3 litre bare-root): three plants of the chosen size at a lower price per plant.

2x Pot & Compost: two plants supplied with pots and compost.

Sizes shown with a line through them are currently unavailable.

At Lincs Plants, we strive to provide fast and reliable shipping to ensure your plants arrive in perfect condition. We offer 1-3 day shipping through a variety of dispatch methods to suit your needs.

Processing Time:
Orders are processed within 1 - 3 business day after payment confirmation. Orders placed on weekends or public holidays will be processed the next business day.

Shipping Methods:

  • Standard Shipping (1-3 days)
  • Express Shipping (1-2 days)

Should you have any questions or concerns about your shipment, feel free to contact us.