Coreopsis, also called "tickseed", are perennials or annuals that are easy to grow, renowned for their generous, bright flowering that lasts from summer until the first frosts. Cultivation of Coreopsis requires little maintenance, and they thrive equally well in beds, borders or pots. Over time, clumps of perennial Coreopsis can thicken, become bare in the centre or lose vigour. Dividing Coreopsis is the best method to rejuvenate your plants and multiply Coreopsis for free, to bulk up beds or create new flowering displays. Here is how to divide Coreopsis at the right time and with proper technique to enjoy their show for years to come!
When to divide Coreopsis?
Coreopsis division is preferably carried out in spring, in March–April, when growth resumes, or in autumn, from September to October, after flowering. Avoid periods of extreme heat or prolonged frost. Performing this operation every three to four years helps maintain plant vigour and ensures the long-term health of Coreopsis cultivation.
How to divide Coreopsis?
Necessary equipment
- a spade or fork
- a sharp knife or pruning shear
- a watering can
- compost
- mulch
- Choose a healthy clump that has been established for at least two years.
- Carefully lift the plant using a digging fork to preserve the roots.
- Using the knife or pruning shear, divide the clump into divisions, each with well-formed roots and a few vigorous shoots.
- Replant the divisions immediately into light, well-drained soil enriched with compost.
- Water generously to encourage rooting.
- Mulch
Care of Coreopsis after division
After dividing Coreopsis, water regularly for the first few weeks to keep the soil slightly moist, without overwatering. A fine mulch helps retain soil freshness and suppress weed growth. Pinching back young shoots stimulates branching and encourages more abundant flowering. This simple Coreopsis care ensures good establishment and vigorous beds for several years.
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