Coreopsis is a member of the Aster family. This plant is also called “Tickseed” or “Calliopsis”. Most varieties are perennials, with some annual varieties. They are natives of plains in the U.S. Coreopsis are sunny flower border work horses. They are great additions to any garden design, blooming most of the summer. Coreopsis make great garden edging as well as nice cut flowers. Coreopsis produces daisy like flowers. Flowers grow on sturdy stalks that grow from 1 1/2′ to 4′ tall. Brilliant colors include yellow, gold, red, maroon, or a combination of these colors.
The annual Coreopsis is C. tinctoria and in a full sun garden it can reach three to four feet in height. Easily grown as a hardy annual (you can sow it outside) this showy yellow and dark red daisy puts on quite a flower display. The drought-tolerant nature of the Coreopsis makes it a great plant for container gardens, xeriscaping or near the road or mailbox where it won’t get watered everyday. Give it a prime spot in the cut flower garden as well.
Zone: Tickseed, or Coreopsis, is hardy in zones 3-8.
Exposure: Full sun Bloom Period/Days to Harvest
Bloom Period/Days to Harvest: Early summer through Fall
Growing from transplantation: Shop for coreopsis plants in the spring in cold regions or year-round in mild climates. Choose healthy-looking plants with signs of new growth in leaf or flower bud. (In early spring you may need to look closely in the pot for the dark stems emerging from the soil.)
Grow Coreopsis from seed: Directly seed them into your flower garden in early spring. Sow seeds early in the season, covering lightly with coarse or sandy soil.
They grow well in average soils. Soil should be well draining. Mix in plenty of compost prior to the first planting. Keep the soil moist until they germinate, about one of two weeks. This versatile plant grows in dry or wet climates. Water only during extended droughts. Plant coreopsis in full sun in well-drained soil. Add a little organic fertilizer to the planting hole. Water weekly throughout the first summer.
Coreopsis will bloom longer if deadheaded. However the profusion of delicate blooms can make deadheading a nightmare. An easier solution is to simply wait until the first flush of bloom wanes and sheer the entire plant back. It will recover quickly. Add a light application of organic fertilizer in spring. Water infrequently once the plant is established – just two or three times during the summer. Dig up your Coreopsis clumps every three years or so to divide in the fall after blooming or in the early spring. The taller varieties will benefit from staking.