Perennial aster varieties are available in a wide range of colours. Aster x frikartii ‘Monch’ is indispensable for its long-flowering season. This perennial bears lavender-blue flowers which appear from August to October. It’s a bushy plant, growing up to 90cm tall.
Aster novi-belgii ‘Jenny’
Aster novi-belgii ‘Jenny’ is a compact, low-growing aster with lovely magenta red flowers and dark green leaves. Expect a height of 30cm and a spread of 30cm. Perfect for small gardens.
Aster ageratoides ‘Star Shine’
Other forms with good colour include Aster ageratoides ‘Star Shine’ (white flowers) and Aster ageratoides ‘Asran’ (lilac flowers).