Coreopsis verticillata L.
Threadleaf Coreopsis, Whorled Tickseed, Whorled Coreopsis
Asteraceae (Aster Family)
USDA Symbol: COVE5
Threadleaf coreopsis is a popular, 1-3 ft. perennial with delicate, dark-green leaves divided into thread-like segments. The long-blooming flower heads have yellow centers and untoothed petals.
This plant spreads by rhizomes.
From the Image Gallery
Plant CharacteristicsDuration: Perennial
Size Notes: Up to about 3 feet tall.
Fruit: Black. Fruit is a cypsela (pl. cypselae). Though technically incorrect, the fruit is often referred to as an achene.
Bloom InformationBloom Color: Yellow
Bloom Time: Jun , Jul , Aug
DistributionUSA: AL , AR , CT , DC , FL , GA , KY , MA , MD , MS , NC , NJ , SC , TN , VA , WV
Canada: ON , QC
Native Distribution: MD to SC, e. to KY & TN
Native Habitat: Wood edges, pine savannas, Post Oak savannas.
Growing ConditionsWater Use: Low
Light Requirement: Sun , Part Shade
Soil Moisture: Dry
Soil pH: Acidic (pH<6.8)
Drought Tolerance: High
Soil Description: Sandy, well-drained soil.
BenefitUse Ornamental: A popular garden flower since the 19th century.
Use Wildlife: Seeds eaten by birds.
Conspicuous Flowers: yes
Interesting Foliage: yes
Attracts: Birds , Butterflies
Nectar Source: yes
PropagationPropagation Material: Root Division , Seeds
Description: Propagate by dividing either in the fall or early spring. Seeds may be sown outside in late fall or the following spring without any cold treatment. Seedlings grow rapidly.
Seed Collection: Nutlets are mature and ready for collection about four weeks after the flowers wither. Watch the inner series of bracts; when they begin to darken, it is time to collect. Remove chaff and store in sealed, refrigerated containers. Storage life is at least three years.
Seed Treatment: Seeds of this genus generally germinate without pretreatment.
Commercially Avail: yes
Maintenance: This plant spreads by rhizomes but can be controlled by lifting and dividing every 3-4 years. This also increases the vigor of the plant.
Find Seed or Plants
View propagation protocol from Native Plants Network.
From the National Organizations DirectoryAccording to the species list provided by Affiliate Organizations, this plant is on display at the following locations:
Native Plant Center at Westchester Community College, The - Valhalla, NY
Delaware Nature Society - Hockessin, DE
United States Botanic Garden - Washington, DC
Mt. Cuba Center - Hockessin, DE
BibliographyBibref 1620 - Gardening with Native Plants of the South (Reprint Edition) (2009) Wasowski, S. with A. Wasowski
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Web ReferenceWebref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter
Research LiteratureReslit 518 - Effects of ethephon on stock plant management of Coreopsis verticillata, Dianthus caryophyllus, and Veronica longifolia (2007) J. E. Glady, N. S. Lang and E. S. Runkle
Reslit 395 - First report of fusarium wilt of Coreopsis verticillata 'Moonbeam' caused by Fusarium oxysporum in a Midwestern nursery (2007) W. H. Elmer, M. Daughtrey, K. Rane and M. M. Jimen...
Reslit 588 - Ethephon influences flowering, height, and branching of several herbaceous perennials (2001) T. Hayashi, R. D. Heins, A. C. Cameron and W. H. C...
Reslit 1135 - Manipulating the abundance of natural enemies in ornamental landscapes with floral resource plants (2005) E. J. Rebek, C. S. Sadof and L. M. Hanks
Reslit 1136 - Influence of floral resource plants on control of an armored scale pest by the parasitoid Encarsia citrina (Craw.) (Hymenoptera : Aphelinidae) (2006) E. J. Rebek, C. S. Sadof and L. M. Hanks
Reslit 1255 - Determination of optimum fertilizer concentration and corresponding substrate electrical conductivity for ten taxa of herbaceous perennials (2005) H. L. Scoggins
Reslit 1423 - Soil fumigants to replace methyl bromide for weed control in ornamentals (2007) R. E. Uhlig, G. Bird, R. J. Richardson and B. H. Z...
Reslit 1933 - Comparative Capitular Morphology and Anatomy of Coreopsis L and Bidens L (Compositae), Including a Review of Generic Boundaries (1995) M. Tadesse, D. J. Crawford and E. B. Smith
Reslit 2106 - The pathogenicity and phylogeny of Fusarium oxysporum isolates on Coreopsis verticillata 'Moonbeam' (2008) W. H. Elmer, M. M. Jimenez-Gasco and M. L. Daughtr...
Reslit 2564 - A cladistic study of North American Coreopsis (Asteraceae: Heliantheae) (1987) R. K. Jansen, E. B. Smith, D. J. Crawford
This information was provided by the Florida WIldflower Foundation.
Search More Titles in Research Literature
Additional resourcesUSDA: Find Coreopsis verticillata in USDA Plants
FNA: Find Coreopsis verticillata in the Flora of North America (if available)
Google: Search Google for Coreopsis verticillata
MetadataRecord Modified: 2022-12-09
Research By: TWC Staff