Golden Tickseed. Coreopsis tinctoria Sunflower Family ( Asteraceae ), Golden Tickseed. Also known as: Plains Coreopsis, Calliopsis, Coreopsis tinctoria var. immminuta, Coreopsis cardaminefolia, Coreopsis stenophylla. We wish to thank Wikipedia, the free encyclopedia for some of the information on this page. We share images and information with Wikipedia. Coreopsis tinctoria is an annual forb which usually germinates in late summer or fall and overwinters as a rosette. The stems begin growing upward and branching in spring, reaching a height of up to 3 feet. Its opposite leaves are deeply divided, with very narrow upper leaf segments. The flowering heads are numerous, 1-2 inches in diameter, and are yellow with a red-brown center. Golden Tickseed is a very beautiful flowering plant growing about 2 to 3 feet tall with numerous bright yellow flower heads contining redish brown centers. It can be found growing wild and as a cultivated plant. Plains Coreopsis thrives in well-drained soil and full sun or light shade. It will not tolerate a very dry site. Native Plains coreopsis wildflowers occur naturally in prairies, savannas, open dry rocky woods, and along roadsides throughout the United States. Quick Notes: Height: Up To About 2 - 3 feet tall. Flowers: The ray flowers droop at the base of a redish brown center. They have bright yellow flowers. Flowering Time: June to November. Leaves: Leaves are very thin, deeply notched, and have a stiff, hairy feel. Pinnatedly compounded with uneven division. Found: Arizona, in Apache, Coconino, and Gila counties. Hardiness: USDA Zone 3a: to -39.9 �C (-40 �F) USDA Zone 3b: to -37.2 �C (-35 �F) 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) USDA Zone 9a: to -6.6 �C (20 �F) USDA Zone 9b: to -3.8 �C (25 �F) USDA Zone 10a: to -1.1 �C (30 �F) USDA Zone 10b: to 1.7 �C (35 �F) Soil pH requirements: 5.6 to 6.0 (acidic) 6.1 to 6.5 (mildly acidic) 6.6 to 7.5 (neutral) 7.6 to 7.8 (mildly alkaline) 7.9 to 8.5 (alkaline) Sun Exposure: Full Sun Elevation: 800 - 7,500 Feet. Habitat: Usually on prairies, roadsides, waste places, slopes. Miscellaneous: Flowering Photos Taken July 29, 2009 Near Clint's Well, Arizona.

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