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Ragged-robin

Silene flos-cuculi

Also listed as Coronaria flos-cuculi, Lychnis flos-cuculi

Also known as Cuckooflower, Crow-flower, Meadow Campion

herbaceous☀️ full sun💧💧💧 high water❄ Hardy: Zone 5a – Zone 8b

Climate Match for your location

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A cottage garden favorite with distinctive fringed pink or magenta flowers held above narrow foliage. Thrives in moist conditions and attracts pollinators throughout the summer.

Why grow it

Ragged-robin offers a distinctive aesthetic compared to other moisture-loving cottage garden perennials, with its characteristic fringed petals setting it apart from the simpler flower forms of similar species like lychnis or phlox. It performs reliably in consistently moist to wet soils where many ornamentals struggle, making it useful for rain gardens or low-lying areas. The extended blooming period and demonstrated pollinator value make it a functional choice for gardens designed to support beneficial insects.

Watch out for

This plant tends to self-seed readily in favorable conditions, which can lead to volunteer seedlings requiring management in smaller or more manicured gardens. In very warm climates, it may decline during prolonged summer heat and drought, even if initially established, so consistent moisture is important for longevity beyond its first season.

Overview

Form
Upright
Growth Rate
moderate
Size
1.5–2.5′ tall × 1–1.5′ wide
Dormancy
deciduous
Family
Caryophyllaceae
Pollinators & beneficial insects

Native Range

European

Seasonality

Bloom Season

J
F
M
A
M
J
J
A
S
O
N
D

Season of Interest

SpringSummer

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Companion Planting

Plants well with