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Tall Tickseed Coreopsis
Coreopsis tripteris L.
Asteraceae (Sunflower Family)
▲▼mature, flowering plants
▲ stems and leaves
▲▼flowers/inflorescences
Coreopsis
tinctoria
Nutt., Plains Coreopsis:
(Bayer Code:
CRLTI; US Code COTI3)
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U.S. native summer annual that grows 6-24 inches tall, producing slender, green,
almost threadlike stems that are usually unbranched until flowering
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Leaves are spaced wide-apart on stems, and are bipinnately lobed, with linear,
almost needle-like lobes
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Flower heads are at tips of bare flowering stems, and are about 1 inch diameter;
ray flowers are yellow, often with a darker red base near center of head (or all
dark red ray flowers); disk flowers are orange-brown
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Bracts below the head are triangular and green and extend beyond the flowers as
the head matures
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Common in wetter cultivated crops or open wetlands, but found in drier upland
soils, rocky sites, too
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Reproduces readily by seed
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Commonly included in wildflower mixes