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 ray and disc flowers.

In the UK the cultivar 'Early Sunrise' has received the Royal Horticultural Society's Award of Garden Merit.
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 ray and disc flowers.
In the UK the cultivar 'Early Sunrise' has received the Royal Horticultural Society's Award of Garden Merit.
Coreopsis grandiflora