Let it grow

Michaelmas daisies are essential in the early autumn garden for me. Symphyotrichum laeve ‘Calliope’ is a particularly pretty variety, with lavenderblue flowers. Give it space to grow into a healthy clump at about 150cm-180cm tall. A 9cm pot from Old Court Nurseries costs £5.50 (01684 540416; autumnasters.co.uk).