Echinacea purpurea 'White Swan' H 70cm S45cm. Full sun. Most soils, except very dry. Flowering in June to September.. Fully hardy. Bold, white, daisy-like flowers with drooping petals with orange-brown centres on stiff stems. This white coneflower is shorter than many varieties. A valuable addition to the middle of a border. Tough and long-flowering, coping well with adverse weather conditions, except drought. It is attractive to bees and butterflies, and birds will flock to the seedheads.