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Products > Coreopsis grandiflora 'Sunray'
 
Coreopsis grandiflora 'Sunray' - Coreopsis

Note: This plant is no longer in stock. This is an archive page preserved for informational use.  
Image of Coreopsis grandiflora 'Sunray'
[2nd Image]
Habit and Cultural Information
Category: Perennial
Family: Asteraceae (Sunflowers)
Origin: Great Plains (North America)
Evergreen: Yes
Flower Color: Yellow
Bloomtime: Spring/Summer
Height: 1-2 feet
Width: 2-3 feet
Exposure: Full Sun
Summer Dry: Yes
Irrigation (H2O Info): Medium Water Needs
Winter Hardiness: < 0 °F
Coreopsis grandiflora 'Sunray' (Coreopsis) - A semi-deciduous perennial (evergreen in southern California) that produces mounds of bright green lobed leaves to nearly a foot tall by up to 3 feet wide. Golden yellow flowers are held on stalks to 18 inches tall from April through most of the summer.

Plant in sun with moderate to ocassional irrigation. This is a selection of a very hardy plant is hardy to well below 0 °F. As with many perennials this plant will benefit from being divided and reset in the fall every one to two years. Cut back plants in mid winter in mild climates.

Coreopsis grandiflora is native to the Great Plains of North America. The name for the genus Coreopsis comes from the Greek word 'koris' which means bug, and refers to the tick-like shape of the seed and the specific epithet is a reference to the large size of the flowers of this species.

The selection 'Sunray' was the first perennial ever to win the European Fleuroselect Award in 1980. We grew this cheery plant from 1983 until 2011. 

The information displayed on this page about Coreopsis grandiflora 'Sunray' is based on our research conducted about this plant from books in our nursery library as well as from information that is provided by reliable online resources. We also have included our own observations made about it as it grew in the nursery gardens and other gardens visited, as well how the crops of this plant performed in the containers when we had them in our nursery field. We also include comments received from others and welcome hearing from anyone who has information about this plant, particularly if it includes cultural information aiding others to better grow it.

 
We closed for regular business at the end of 2025 in order for the property to be developed for affordable housing.
Our gates remain closed but we will open them by appointment to interested parties through August 21st to liquidate remaining plants, supplies and equipment.
The plants remaining in the field are listed on our
Live Inventory Page.