Perennials that flower in September

Common yarrow

From £4.40 *

Silver oat grass

From £4.90 *

Rock thyme

From £3.60 *

Chinese aconite, Carmichael's monkshood

From £5.90 *

African lily 'Twister'

£21.40 *

African lily

From £7.90 *

Mexican hyssop

From £4.40 *

Korean mint

From £5.90 *

Hyssop

From £5.90 *

Semi-double hollyhock

From £6.90 *