Doellingeria umbellata (3 × 9cm pots)

Masses of small white flowers from late summer. Position: full sun or partial shade Soil: fertile, well-drained soil Rate of growth: average to fast Flowering period: August to October Hardiness: fully hardy Masses of yellow-eyed, white daisies (which sometimes have a purple flush), start to appear in flattish clusters from mid- to late summer, above rich green, mildew-resistant foliage. The flowers are attractive to butterflies and good for the vase - and as they tend to appear earlier than many of the other asters, they help get the season off to a great start! It's a wonderful addition to borders or more naturalised settings, where it will maintain colour and interest well into autumn. Garden care: Leave top growth on through the winter to provide protection and valuable food for birds and insects. Insert twiggy prunings early in the season to provide invisible and effective support. Apply a thick 5-7cm (2-3in) mulch around the base of the plant in the autumn, taking care not to cover the crown.