Coreopsis - Unbelievable
This is an easy to grow hardy annual, which flowers in a remarkable range of colours, set off by dark eye-catching centres. The tall and airy plants are ideal sown in mixed borders and naturalistic drifts.
Sow outdoors, March-May, where they are to flower, 0.5cm deep, directly into finely-prepared, well-drained soil, which has already been watered. Seedlings usually appear in 14-28 days. Thin seedlings to 30cm apart. Water well until plants are established. Or sow indoors, March-May, 0.5cm deep, in trays of compost. Water well and place in a cold frame or greenhouse. Keep moist. Transplant seedlings, 5cm apart, to other trays when large enough to handle. Always hold by a leaf, never by the stem. Gradually accustom young plants to outside conditions, avoiding frosts, before planting out, May-June, 30cm apart. Flowers from June to October.