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Silene Species, Ragged Robin

Silene flos-cuculi

Family: Caryophyllaceae (kar-ree-oh-fil-AY-see-ee) (Info)
Genus: Silene (sy-LEE-nee) (Info)
Species: flos-cuculi (floss KOO-koo-lie) (Info)
Synonym:Agrostemma flos-cuculi
Synonym:Coccyganthe flos-cuculi
Synonym:Coronaria flos-cuculi
Synonym:Lychnis flos-cuculi
Synonym:Melandrium flos-cuculi
View this plant in a garden



Foliage Color:

Unknown - Tell us

Bloom Characteristics:

This plant is attractive to bees, butterflies and/or birds

Water Requirements:

Very high moisture needs; suitable for bogs and water gardens

Where to Grow:

Unknown - Tell us


12-18 in. (30-45 cm)

18-24 in. (45-60 cm)

24-36 in. (60-90 cm)


15-18 in. (38-45 cm)

18-24 in. (45-60 cm)

24-36 in. (60-90 cm)


USDA Zone 4a: to -34.4 C (-30 F)

USDA Zone 4b: to -31.6 C (-25 F)

USDA Zone 5a: to -28.8 C (-20 F)

USDA Zone 5b: to -26.1 C (-15 F)

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

Sun Exposure:

Sun to Partial Shade


Unknown - Tell us

Bloom Color:


Magenta (Pink-Purple)

Bloom Time:

Late Spring/Early Summer



Other details:

Unknown - Tell us

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Patent Information:


Propagation Methods:

By dividing the rootball

From seed; direct sow outdoors in fall

From seed; winter sow in vented containers, coldframe or unheated greenhouse

From seed; sow indoors before last frost

From seed; direct sow after last frost

Seed Collecting:

Allow pods to dry on plant; break open to collect seeds

Seed does not store well; sow as soon as possible


This plant has been said to grow in the following regions:

Montgomery, Alabama

Juneau, Alaska

Seward, Alaska

Clovis, California

Fountain Valley, California

Greenville, Indiana

Latonia, Kentucky

Hanover, Massachusetts

Croton On Hudson, New York

Wallkill, New York

Elizabeth City, North Carolina

Warren, Ohio

Mount Hood Parkdale, Oregon

West Linn, Oregon

New Hope, Pennsylvania

Wilkes Barre, Pennsylvania

Ogden, Utah

Lexington, Virginia

Suffolk, Virginia

Chimacum, Washington

Kalama, Washington

Kendall, Washington

show all

Gardeners' Notes:


On Jul 19, 2014, Foofsmom from Kendall, WA (Zone 8a) wrote:

I have had this plant (the pink one) for many years. This is the first time I've actually separated it at the roots. BOTH plants are blooming and I've never had an invasive problem with the plant. I'll be trying to get seeds this year. Delicate little flowers and a shade of pink that is delightful.


On Jun 3, 2013, currym from Hanover, MA wrote:

We decided not to mow all of the (way-too-big) lawn at our new home, and were thrilled to see this pop up! We never water out there and it's certainly not been a wet spring. A lovely surprise!


On Sep 22, 2010, kobwebz from columbia, TN (Zone 7a) wrote:

This is one of the wonderful weavers in my spring gardens, I don't find it invasive here in zone 6 and does not need alot of moisture.


On Jun 23, 2006, Joy from Kalama, WA (Zone 8b) wrote:

Ragged Robin self seeds to the point of being weedy in my garden. Best to deadhead to prevent this.


On Aug 31, 2002, Weezingreens from Seward, AK (Zone 3b) wrote:

I purchased the seed for Ragged Robin from a catalog and started it last spring. The seedlings bloomed in the first year. I think they will do well in our cool, moist climate. Though we receive copious amounts of rain in a South Central Alaskan coastal town, we are on a gravel base that affords good drainage. I have not attempted to winter over this plant, so it's perennial qualities here remain to be seen.


On Aug 5, 2002, Baa wrote:

A perennial from damp land in Europe and Russia.

Has lance like, blue-green - mid-green leaves. Bears small cymes of pink, 5 point star shaped flowers, each petal is divided giving the flowers a ragged appearence.

Flowers May-July

Needs a very moist but well-drained soil in sun or partial shade.

This is a great plant for the wildlife garden or the drier edges of the bog garden. It's a good moth attractor.