How to Grow Coreopsis
Perennial
Coreopsis is a light, sunny perennial with cheerful daisy-like flowers, usually in yellow, gold, red or bicoloured shades. Its fine foliage and free-flowering habit make it useful for softening border edges and filling sunny gaps. Many perennial forms are compact enough for pots, yet still provide a long season of colour.
Planting
Plant perennial coreopsis in April or May after the last spring frost, or in early September in milder parts of the UK. Choose a sunny place with well-drained soil, as winter wet can shorten its life. Work in a modest amount of organic matter, but avoid very rich ground. Space plants 30 to 45 cm apart and water regularly until rooted. In cooler northern gardens, favour spring planting and provide especially sharp drainage.
Care
Water new plants during dry spells, then keep established clumps on the drier side once settled. Deadhead regularly to encourage further flowers and trim back tired stems after the first main flush. Apply only a light spring mulch, kept clear of the crown. Divide plants in spring if they become congested, and replace short-lived clumps before they decline.
Bloom time
Coreopsis flowers mainly from June to September, with some cultivars continuing into October in a mild autumn. Blooming may begin later in northern Britain and Scotland. Frequent deadheading helps retain the bright display, while the finely cut foliage keeps borders looking fresh between flower flushes.
Garden uses
Coreopsis is excellent at the front of sunny borders, in gravel gardens and in patio containers with free-draining compost. Its bright flowers lift planting schemes with ornamental grasses, salvias and hardy geraniums. Single, open flowers are particularly useful for bees and other pollinators, and stems can be cut for informal posies.
Tips
Prioritise drainage over richness, especially on heavy soil and in wet winters. Choose an AGM cultivar from the RHS or a local garden centre if available. Do not let container plants stand in water. Removing faded flowers little and often is the simplest way to keep a compact plant producing colour for longer.
Growing Coreopsis: frequently asked questions
How do I grow coreopsis in the UK?
Plant perennial coreopsis in April or May after the last spring frost, or in early September in milder parts of the UK.
When does coreopsis flower?
Coreopsis flowers mainly from June to September, with some cultivars continuing into October in a mild autumn.
How do I care for coreopsis?
Water new plants during dry spells, then keep established clumps on the drier side once settled.
General guidance for UK gardens. Timing and hardiness vary by region and season; the RHS or a local garden centre can advise for your area. Page updated 19 Sep 2026.