'Sunray' is a coreopsis cultivar with golden yellow, double flowers from late spring to late summer. The flowers stand above foliage on erect stems that are up to 24 inches tall. The foliage forms a compact, dense mound about 18 to 20 inches tall and wide. Use in perennial borders, along walkways, in parkstrips. A wonderful yellow for mixing with nepeta, salvia, and veronica.
Grow in well-drained, slightly loamy soil in full to part sun. Plants tolerate some dry conditions, but are not as drought tolerant as most other species of Coreopsis. Prompt deadheading of spent flower stalks can be tedious for a large planting, but does tend to encourage additional bloom. In optimum growing conditions, plants will spread in the garden over time by stolons to form an attractive ground cover, but spread is easy to check.