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PlantFiles: Threadleaf Coreopsis, Tickseed
Coreopsis verticillata 'Rosea'

Family: Asteraceae (ass-ter-AY-see-ee) (Info)
Genus: Coreopsis (kor-ee-OP-sis) (Info)
Species: verticillata (ver-ti-si-LAH-tuh) (Info)
Cultivar: Rosea

Synonym:Coreopsis rosea

12 members have or want this plant for trade.


12-18 in. (30-45 cm)

15-18 in. (38-45 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:
Full Sun


Bloom Color:

Bloom Time:
Mid Summer
Late Summer/Early Fall


Other details:
Average Water Needs; Water regularly; do not overwater
Requires consistently moist soil; do not let dry out between waterings

Soil pH requirements:
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)

Patent Information:
Unknown - Tell us

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 seedheads to dry on plants; remove and collect seeds
Properly cleaned, seed can be successfully stored

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2 positives
4 neutrals
2 negatives

Gardeners' Notes:

Neutral Anemophilous On Sep 4, 2011, Anemophilous from Edgartown
United States wrote:

Does pink-flowered Coreopsis verticillata exist? Or are plants labeled C. verticillata 'rosea' really Coreopsis rosea, a different species?

Negative Eldine On Jul 28, 2009, Eldine from Wellsville, NY (Zone 4b) wrote:

Not crazy about this one at all. Way too delicate, very thin foliage, weak stems. The flowers are small and don't really show unless you are close up. I guess I prefer bold colors and larger flowers. Anything near it will overpower it.

Neutral makushla On May 3, 2008, makushla from Wykagyl, NY wrote:

hey y'all,

Well, I think the first thing to need to know about this type of coreopsis is that its really different from the yellow coreopsis. The yellow corepsis tends to generally stand up straight and have a huge prescence.

I bought some semi-dying plants from a catalogue in 2007, put them in in partial shade, and they took a while to flower. However, once they flowered, they were delicate and beautiful - heavenly really. In my semi-shade garden, they did not stand up tall like the yellow coreopsis do in the full sun, but they have a beautiful, delicate quality. They tend to flop over a bit, and dead-heading is a real plus. (do it!)

It's June and they are only just coming up. (like once inch plants). However, I'm excited because they really are lovely. Its very different than I thought they would be, because I thought they would be like the yellow coreopsis. They're still beautiful though. This plant is really worth in certain setting. I love it!

Happy Gardening!

Positive Kim_M On Jul 7, 2005, Kim_M from Hamburg, PA (Zone 6b) wrote:

Love it!

Neutral Joan On Dec 28, 2004, Joan from Belfield, ND (Zone 4a) wrote:

This plant has been growing in my zone 4 garden for 3 years now, and although it does bloom, it grows in a ring, with the inner portion dying off each winter. I've left it because it does bloom and is lovely, but not it's not an eyecatcher.

Neutral Karenn On Jul 26, 2003, Karenn from Mount Prospect, IL (Zone 5a) wrote:

I have this plant in several places in my garden (4B-5A) and have not had any problems with it's returning from year to year. However, I have also found if you are going to put this one in full sun, make sure the soil is always moist; that's the "difference" between this coreopsis and most other varieties. It is actually quite tolerant of "boggy" sites.

Negative pfluggy On Jul 25, 2003, pfluggy from Rosemount, MN (Zone 4a) wrote:

I haven't had good results with this form of coreopsis. I have good luck with tickseed and moonbeam. The plant I have is in it's 3rd season and has yet to produce a bloom. I live in zone 4a and have the plant in mostly sun.

Positive mrchala On Jul 19, 2003, mrchala from Lodi, WI wrote:

This plant tends to be picky in colder climates like Wisconsin. You need to cover it with a thick layer of leaves or hay to protect it from the extreme cold.


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

Mount Prospect, Illinois
Barbourville, Kentucky
Hebron, Kentucky
Springfield, Massachusetts
Blissfield, Michigan
Miles City, Montana
Omaha, Nebraska
Westwood, New Jersey
Alden, New York
Wellsville, New York
Wykagyl, New York
Elizabeth City, North Carolina (2 reports)
Belfield, North Dakota
Cambridge, Ohio
Cincinnati, Ohio (2 reports)
Bend, Oregon
Ford City, Pennsylvania
Mercer, Pennsylvania
Reading, Pennsylvania
Royersford, Pennsylvania
West Chester, Pennsylvania
Vancouver, Washington
Lodi, Wisconsin

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