Silene Flos-Cuculi 'Petit Henri' (Syn. Lychnis Flos-Cuculi 'Petit Henri')
Silene Flos-Cuculi 'Petit Henri' (Syn. Lychnis Flos-Cuculi 'Petit Henri')
Couldn't load pickup availability
Silene Flos-Cuculi 'Petit Henri' (White Ragged Robin) is a charming clump-forming perennial admired for its elegant, finely fringed pure white flowers that rise gracefully above slender stems from late spring through summer. Previously known as Lychnis Flos-Cuculi 'Petit Henri', this delightful selection has since been reclassified under the genus Silene. It is prized for bringing a soft, naturalistic beauty to cottage gardens, borders, meadow-style plantings, and pollinator-friendly landscapes. Its neat mound of green foliage provides attractive texture, while the delicate blooms attract bees and butterflies to the garden.
Easy to grow and rewarding with minimal maintenance, Silene Flos-Cuculi 'Petit Henri' (White Ragged Robin) thrives in sunny to partially shaded positions with moist, well-drained soil. Its compact habit makes it ideal for mixed perennial borders and container displays, where it provides long-lasting seasonal interest and graceful movement. Whether used as a feature plant or planted in groups for greater impact, this elegant perennial is an excellent choice for gardeners seeking reliable performance and timeless floral appeal.

Collapsible content
Mature height
0.4–0.6 m
Mature width
0.3–0.4 m
Spacing
0.3–0.4 m
Evergreen/Deciduous
Deciduous
Foliage
Green foliage with pure white, finely fringed flowers.
Flowering Period & Fruit Development/Harvest
Flowers from late spring through summer.
Sun tolerance
Full Sun to Partial Shade
Maintenance
Low; remove spent flowers to encourage continued blooming and cut back after flowering if required.
Root System
Compact, fibrous, clump-forming root system.