Aster laevis ‘Calliope’

Also known as Fall Asters, these are terrific favorites for autumn colour in the perennial border. Plants form a bushy clump, bearing loads of small daisy flowers. This is a very tall-growing selection with single lilac-blue blossoms, contrasting against the black stems. Pinch plants before July to reduce height, or plan to give support with stakes. Excellent for cutting. Most asters will be troubled much less with powdery mildew when grown in a moist, rich soil. Divide plants every two to four years to maintain vigour.