Coreopsis grandiflora Hogg ex Sweet
Largeflower Tickseed, Large-flower Tickseed, Common Coreopsis
Asteraceae (Aster Family)
USDA Symbol: COGR5
A 1-2 ft. perennial, occasionally annual, with several stems which are leafy nearly to the summit. Leaves are dissected into linear segments. Flower heads are few or solitary on leafless peduncles. The showy ray flowers (petals) are bright yellow.
This plant self-sows readily, becoming weedy.
From the Image Gallery
Bloom InformationBloom Color: Yellow
Bloom Time: May , Jun
DistributionUSA: AL , AR , CT , FL , GA , IA , IL , IN , KS , KY , LA , MD , ME , MI , MO , MS , NC , NJ , NM , NY , OH , OK , PA , RI , SC , TN , TX , VA , VT , WI , WV
Canada: ON , QC
Native Distribution: S.e. U.S., inland to MO, e. KS, OK & TX; introduced elsewhere
Native Habitat: Open, sandy woods; roadsides; fields
Growing ConditionsLight Requirement: Part Shade
Soil Description: Sandy soils
Conditions Comments: This plant is not reliably perennial and self-sows readily, becoming weedy.
PropagationDescription: Easily grown from seed. Mature plants may be increased by division.
Seed Collection: Not Available
Seed Treatment: Seeds of this genus generally germinate without pretreatment.
Commercially Avail: yes
Mr. Smarty Plants says
Native plants for shady small spaces in Houston, TX
June 18, 2006
What are the best plants and flowers to plant in small spaces in an urban area in Houston, Texas? I have several flower beds that are 3 foot wide and 10-12 foot long that get half day sun. The area...
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From the National Suppliers DirectoryAccording to the inventory provided by Associate Suppliers, this plant is available at the following locations:
Toadshade Wildflower Farm - Frenchtown, NJ
From the National Organizations DirectoryAccording to the species list provided by Affiliate Organizations, this plant is on display at the following locations:
NPSOT - Williamson County Chapter - Georgetown, TX
BibliographyBibref 1620 - Gardening with Native Plants of the South (Reprint Edition) (2009) Wasowski, S. with A. Wasowski
Bibref 318 - Native Texas Plants: Landscaping Region by Region (2002) Wasowski, S. & A. Wasowski
Bibref 1294 - The Midwestern Native Garden: Native Alternatives to Nonnative Flowers and Plants An Illustrated Guide (2011) Adelman, Charlotte and Schwartz, Bernard L.
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Research LiteratureReslit 182 - Effects of hardwood sawdust in potting media containing biosolids compost on plant growth, fertilizer needs, and nitrogen leaching (1999) G. J. Bugbee
Reslit 314 - Natural chilling and limited inductive photoperiod affect flowering in two Asteraceae genera (1996) M. P. Damann and R. E. Lyons
Reslit 313 - Juvenility, flowering, and the effects of a limited inductive photoperiod in Coreopsis grandiflora and C. lanceolata (1993) M. P. Damann and R. E. Lyons
Reslit 297 - Allozyme divergence and intraspecific variation in Coreopsis grandiflora (Compositae) (1984) D. J. Crawford and E. B. Smith
Reslit 563 - Harvest Date and Storage Quality of Herbaceous Perennials (1995) A. M. Hanchek and A. C. Cameron
Reslit 745 - Role of Photoperiod Vernalization and Gibberellic Acid in Floral Induction in Coreopsis grandiflora Nutt. (1966) H. J. Ketellap and A. Barbaro
Reslit 884 - Chloroplast DNA Haplotype Variation within and among Populations of Coreopsis grandiflora (Asteraceae) (1995) R. J. Masongamer, K. E. Holsinger and R. K. Jansen
Reslit 995 - Prevernalization daily light integral and vernalization temperature influences flowering of herbaceous perennials (2002) G. H. Niu, R. Heins, A. Cameron and W. Carlson
Reslit 1038 - Coreopsis grandiflora 'Sunray' flowers in response to short days or vernalization (2005) S. Padhye, E. S. Runkle and A. Cameron
Reslit 1197 - Specific functions of red, far red, and blue light in flowering and stem extension of long-day plants (2001) E. S. Runkle and R. D. Heins
This information was provided by the Florida WIldflower Foundation.
Search More Titles in Research Literature
Additional resourcesUSDA: Find Coreopsis grandiflora in USDA Plants
FNA: Find Coreopsis grandiflora in the Flora of North America (if available)
Google: Search Google for Coreopsis grandiflora
MetadataRecord Modified: 2013-09-09
Research By: TWC Staff