Aster nova-angliae ‘Rudelsburg’ (syn. Symphyotrichum) – An unusual bright magenta-pink fall aster with strap-like fringed petals and a contrasting yellow eye. This older (1964) introduction is highly attractive to beneficial insects such as bees and butterflies. It blooms from September to October and is quite cold hardy. Grows 3-4′ high by 18″ wide. Hardy to zone 3.
Aster novi-belgii ‘Karminkuppel’ (syn. Symphyotrichum) – This late August to October blooming aster features mid-sized purplish-pink daisies that are nicely contrasted by a yellow eye. These are borne over rich green lance-shaped foliage. ‘Karminkuppel’ also makes an excellent long lasting cut flower. Grows 2 to 3′ high by 18″ wide. Hardy to zone 3.
Aster ageratoides ‘Starshine’ – This Japanese Aster is very disease resistant and unlikely to succumb to the dreaded powdery mildew. It bears an abundance of starry white daisies (with a yellow eye) that contrast nicely with the deep green foliage. It was bred in the Netherlands and is a good choice for container culture. Grows 18-24″ high by 24″ wide. Hardy to zone 4.
Aster dumosus ‘Zwergenhimmel’ (syn. Symphyotrichum ‘Dwarf Sky’) – A dwarf Cushion Aster which absolutely covers the contour of its deep green foliage with blooms. It bears large lavender-blue flowers with thin petals and a prominent yellow eye from September to October. Prefers a full sun exposure with adequate soil drainage. Grows 18″ high and wide. Zone 3.
Aster novi-belgii ‘Crimson Brocade’ (syn. Symphyotrichum) – This Michaelmas Daisy bears semi-double magenta-red blooms (with a yellow eye) that really stand out at a distance. These are borne at the tips from late summer into autumn and make good cut flowers. Pair with ornamental grasses such as Panicum ‘Heavy Metal’ Grows 30-36″ high by 18-24″ wide. Hardy to zone 3.