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Plains Coreopsis/Calliopsis
Coreopsis tinctoria (Asteraceae)

A hardy, upright annual, native to the southern United States, it has spread throughout much of North America. Leaves are finely divided occuring mostly in the lower portion of the plant. A prodigious bloomer, having vibrant yellow flowers with maroon centers. Prefers full sun in various soil types. An ideal plant for areas that have poor drainage or remain soggy for an extended period of time.

Average planting success with this species: 80%
Height: 1-3 feet
Germination: 15-30 days
Optimum soil temperature for germination: 60-65F
Sowing depth: 1/16"
Blooming period: May-August
Average seeds per pound: 1,400,000
Seeding rate: 2 lbs. per acre
Suggested use: Ditches, low lying areas, mixes.
Miscellaneous: Often forms large colonies in ditches along roadsides.