Coreopsis grandiflora is a North American species of perennial plant in the family Asteraceae.

[4] 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.).

[6] Coreopsis grandiflora is a perennial herb[7] sometimes greater than 60 cm (2 feet) tall.

The Latin specific epithet grandiflora means large-flowered.

[10] In the UK the cultivar 'Early Sunrise'[11] has received the Royal Horticultural Society's Award of Garden Merit.