Coreopsis tripteris, (Tall Coreopsis) Tickseed
Tall Tickseed Duration: Perennial Bloom Time: Summer-Fall Height: 72-84 inches Spacing: 15-18 inches Light: Full Sun to Part Shade Soil Moisture: Medium USDA Zone: 3a-8b Produces narrow blade-shaped green foliage and 2” daisy-like flowers with bright yellow petals and brown centers
As its name implies, Coreopsis tripteris (Tall Coreopsis) stands quite tall reaching heights of 7' and in some cases up to 9'. Arranged in a flat-topped cluster, the flowers comprise a disk of yellow, deepening to purple-red. The leaves are divided into three lobes.
Coreopsis plants love the summer sun and heat. They are fairly drought tolerant once they are well-established. They are not too picky about soil, but it does need to drain well. Deadheading helps to encourage continuous blooms up until the first frost. Coreopsis care includes leaving new fall growth at the base of the Coreopsis plant for wintering over and dividing the plant every 2 - 3 years. Directly sow Coreopsis flower seed outdoors in spring into a prepared seed bed. Soil should be loosened and weed free. Press the Coreopsis seeds into the soil but do not cover them. Keep the Coreopsis seed moist until germination. Coreopsis Early Sunrise will bloom the first year after sowing flower seed.