Juncus effusus f. spiralis - Corkscrew Rush, Pond Marginal Plant

Juncus effusus f. spiralis, known as corkscrew rush, is a spiral-stemmed form of native soft rush. Its leafless green stems twist and curl like corkscrews and stay green through winter.

Corkscrew rush at a glance

Botanical name	Juncus effusus f. spiralis
Common name	Corkscrew rush, spiral rush
Plant type	Evergreen, clump-forming rush
Height and spread	About 45 cm tall and wide
Flowers	Small brown clusters on the stems in summer; not showy
Position	Full sun or part shade
Soil	Permanently moist to wet soil, ideally acid
Pond depth	0–8 cm of water over the crown
Hardiness	RHS H7 – very hardy (below -20°C)
Native to	Spiral form of the UK native soft rush

Where to plant corkscrew rush

The edge of a pond, up to 8 cm deep
Bog gardens and wet borders
Pots and container ponds, where the twisted stems can be seen close up

How to plant and care for it

Plant from spring to late summer in permanently moist soil or very shallow water. It forms a clump rather than running.

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.