Ard Schenk' has delicate pure white blooms with a golden yellow throat which are borne in late winter and early spring. Like most other crocus, it is ideal for naturalising and looks wonderful in large drifts. Alternatively it can be grown in a pot or pan, topped with grit, so that the delicate blooms can be admired at close quarters. Plant bulbs in autumn, 8-10cm (3-4in) deep in poor, gritty, well-drained soil. A sunny spot is important as sunshine will make the blooms open fully.