Lychnis flos-cuculi (now also listed as Silene flos-cuculi), known as ragged robin, is a UK native wild flower of damp meadows. From May to July it carries rose-pink flowers with petals cut into narrow strips, which give the plant its "ragged" look.

Ragged robin at a glance

Botanical name Lychnis flos-cuculi (syn. Silene flos-cuculi)
Common name Ragged robin
Plant type Clump-forming perennial; dies back in winter
Height and spread About 75 cm tall in flower, up to 50 cm wide
Flowers Rose-pink, each petal cut into narrow "ragged" strips, May to July
Position Full sun or part shade
Soil Moist or wet soil that does not dry out in summer
Pond depth None – plant in wet soil at the pond edge, not under water
Hardiness RHS H7 – very hardy (below -20°C)
Native to UK and Ireland (native wild flower)

Is ragged robin a pond plant?

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

Is ragged robin good for wildlife?

Yes. It is on the RHS Plants for Pollinators list, and the flowers give nectar to bumblebees, honeybees and butterflies. It has declined in the wild as wet meadows have been drained.

How to plant and care for it

Plant in spring or summer in soil that stays moist all summer. Remove faded flower stems to prolong flowering and to limit self-seeding.

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, 30 - 50cm 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.

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