Photo by Melody

PlantFiles: Ragged Robin
Lychnis flos-cuculi

Family: Caryophyllaceae (kar-ree-oh-fil-AY-see-ee) (Info)
Genus: Lychnis (LIK-niss) (Info)
Species: flos-cuculi (floss KOO-koo-lie) (Info)

3 vendors have this plant for sale.

10 members have or want this plant for trade.

View this plant in a garden


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:
Very high moisture needs; suitable for bogs and water gardens
This plant is attractive to bees, butterflies and/or birds

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

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By Baa
Thumbnail #1 of Lychnis flos-cuculi by Baa

By Weezingreens
Thumbnail #2 of Lychnis flos-cuculi by Weezingreens

By Weezingreens
Thumbnail #3 of Lychnis flos-cuculi by Weezingreens

By Weezingreens
Thumbnail #4 of Lychnis flos-cuculi by Weezingreens

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Thumbnail #5 of Lychnis flos-cuculi by Kim_M

By Evert
Thumbnail #6 of Lychnis flos-cuculi by Evert

By LilyLover_UT
Thumbnail #7 of Lychnis flos-cuculi by LilyLover_UT

There are a total of 19 photos.
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4 positives
1 neutral
1 negative

Gardeners' Notes:

Positive Foofsmom 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.

Positive currym 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!

Positive kobwebz 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.

Negative Joy 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.

Positive Weezingreens 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.

Neutral Baa 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.


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
West Linn, Oregon
New Hope, Pennsylvania
Wilkes Barre, Pennsylvania
Ogden, Utah
Lexington, Virginia
Suffolk, Virginia
Chimacum, Washington
Kalama, Washington
Kendall, Washington

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