Higher classification Tickseed | Scientific name Coreopsis grandiflora Rank Species | |
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Similar Garden verbena, Rudbeckia fulgida, Petunia × atkinsiana, Tickseed, Acaena |
Coreopsis grandiflora is a North American species of perennial plants in the sunflower family. The common name is large-flowered tickseed. It is found in eastern Canada (Quebec, Ontario, New Brunswick) and much of the United States, especially the south-central part of the country (Oklahoma, Arkansas, etc.). The species is widely cultivated in China and naturalized there.
Coreopsis grandiflora is a perennial sometimes greater than 60 cm (2 feet) tall. It produces yellow flower heads with both ray florets and disc florets.

Coreopsis grandiflora hort 330



References
Coreopsis grandiflora Wikipedia(Text) CC BY-SA