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Coreopsis has a lot going for it. People like it for its sunny, long-lasting blooms. Birds love it for the tasty seeds it provides. Butterflies and other pollinators enjoy its tasty nectar. We adore it for everything it brings to a garden.
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Under 6 inches to 8 feet
1-3 feet wide
Coreopsis is a group of plants we love for its ease of use in so many garden settings. Especially in the realm of tender perennial and annual coreopsis, there are now so many different colors and patterns to choose from. With their bright and cheery little blossoms, coreopsis can be great companion plants to ornamental grasses and other tough annuals and perennials, especially in containers.
Coreopsis Care Must-Knows
A popular North American native prairie plant, coreopsis can take a lot of beatings and withstand deer. They grow in less-than-ideal conditions, like roadsides and ditches, and open prairies where they have to compete with other plants for resources. Compared to those situations, our gardens are practicallly ideal conditions, even pretty crummy garden soil. These drought-tolerant plants prefer to be left a little on the dry side and in all the sun they can get. (In shade, it won't bloom as well and becomes leggy and prone to foliar diseases like powdery mildew.)
Blooms of coreopsis tend to begin in early summer and can last a while. Less-hardy varieties tend to be longer blooming, especially when deadheaded regularly to encourage new blossoms. As their bloom season progresses, be sure to leave a few flowers on the plants so birds can dine on the tasty seeds.
Some varieties, like verticillata, can spread by creeping rhizomes and will create dense stands of the plant. In some cases, they can be a little aggressive in a garden setting, but can easily be dug up and divided.
Breeding of coreopsis has been going on for quite some time, producing some amazing results. By breeding many of the more annual and tender perennial varieties with hardy varieties, there have been many advancements in the colors available in coreopsis. It has also created some wonderful annual varieties that can bloom nonstop summer through fall, with no deadheading needed. This means you have a great option to the common chrysanthemum for late-summer and fall plantings. The popularity has also brought many other species to market as novelty plants.