Stachys palustris, known as marsh woundwort, is a UK native wild flower of ditches, fens, swamps and wet banks. It has square stems, hairy, lance-shaped leaves and, from June to September, spikes of hooded pinkish-purple flowers marked with white.

Marsh woundwort at a glance

Botanical name Stachys palustris
Common name Marsh woundwort, marsh betony
Plant type Clump-forming perennial; dies back in winter
Height and spread About 50 cm–1 m tall (often about 75 cm), 50–100 cm wide
Flowers Pinkish-purple with white markings, in whorls on spikes, June to September
Position Full sun or part shade (light shade is ideal)
Soil Moist or wet, poorly drained soil; any type or pH
Pond depth None – wet soil at the pond edge, not under water
Hardiness RHS H7 – very hardy (below -20°C)
Native to UK (native wild flower)

Is marsh woundwort a pond plant?

It is a bog and pond-edge plant, not a water plant. Plant it in moist or wet soil beside the pond or in a bog garden, but not under water.

Is it good for wildlife?

Yes. It is on the RHS Plants for Pollinators list, and the flowers attract bumblebees. The RHS suggests it for wildlife gardens and wild-flower meadows.

How to plant and care for it

Plant in spring in soil that stays moist. It spreads by creeping roots with small tubers, so it can wander in wet ground. Pinch out the shoot tips in spring to keep it bushier. It is generally free of pests and diseases.

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: 0cm

Light: Full sun or part shade

Hardiness: Hardy

Height and spread: 40 - 80cm 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.

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