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Lychnis flos-cuculi - L.
Common Name Ragged Robin
Family Caryophyllaceae
USDA hardiness 5-9
Known Hazards This plant contains saponins[20]. Although fairly toxic, these substances are poorly absorbed by the body, most passing straight through without any harm. Saponins can be found in a number of common foods such as some beans. Saponins are much more toxic to some creatures, such as fish, and hunting tribes have traditionally put large quantities of them in streams, lakes etc in order to stupefy or kill the fish[K].
Habitats Damp meadows, marshes, fens and wet woods, avoiding acid soils[17].
Range Europe, including Britain, from Norway south and east Spain, Siberia and the Caucasus.
Edibility Rating  
Other Uses  
Weed Potential No
Medicinal Rating  
Fully Hardy Moist Soil Wet Soil Semi-shade Full sun


Lychnis flos-cuculi Ragged Robin

Lychnis flos-cuculi Ragged Robin
Physical Characteristics
 icon of manicon of flower
Lychnis flos-cuculi is a PERENNIAL growing to 0.6 m (2ft) by 0.3 m (1ft in).
It is hardy to zone (UK) 6. It is in flower from May to September, and the seeds ripen from Jul to October. The flowers are hermaphrodite (have both male and female organs) and are pollinated by Bees, lepidoptera.Suitable for: light (sandy), medium (loamy) and heavy (clay) soils. Suitable pH: acid, neutral and basic (alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It prefers moist or wet soil.

Coronaria flos-cuculi.

Woodland Garden Dappled Shade; Shady Edge; Meadow; Bog Garden;
Edible Uses
None known
Medicinal Uses
Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.

None known
Other Uses

The root contains saponins, a soap substitute that can be used for washing clothes, hair etc. It is extracted by boiling the roots in water[20]. Do not overboil the roots because this will break down the saponins[K].
Cultivation details
An easily grown plant, succeeding in ordinary garden soil so long as it is moist, and also doing well in a bog garden[1]. It prefers a sunny position[111]. Plants succeed in damp woodlands or damp meadows[200]. At least one named form has been selected for its ornamental value[187].
Seed - sow spring in a cold frame. When they are large enough to handle, prick the seedlings out into individual pots and plant them out in the summer. The seed can also be sown in situ in spring or early autumn though this requires more seed. Division in spring or autumn[200]. Very easy, larger clumps can be replanted direct into their permanent positions, though it is best to pot up smaller clumps and grow them on in a cold frame until they are rooting well. Plant them out in the spring.
Other Names
Found In
Weed Potential

Right plant wrong place. We are currently updating this section. Please note that a plant may be invasive in one area but may not in your area so it’s worth checking.

Conservation Status
IUCN Red List of Threatened Plants Status :
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Subject : Lychnis flos-cuculi  

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