Special Groups: Lewis & Clark
Planting Instructions: 'Plains Coreopsis' prefers locations that receive full to partial sun with dry to moist, well-drained soils. Easily grown from seed by broadcasting into a prepared seedbed in the early spring after the danger of frost has passed. Succession plant more seeds for continuous blooming from June until the plants are killed by the frost in the fall. Under the proper conditions, Coreopsis will reseed itself.
Depending on the texture and density of your soil, watering the seed in after broadcasting may be enough. Otherwise, cover with abut one-quarter inch of light, fine soil. The best soil temperature for germination is 65ΒΊF to 75ΒΊF and will germinate in 14 to 21 days. Once seedlings appear, thin them to eight inches apart.