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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.
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