Symphyotrichum dumosum

Common name(s): Bushy Aster, New York Aster
Blooming time: fall
Blooming colors: blue, purple, pink, white
Height: 20 to 50 cm
Origin: North America
Hardiness zone (USDA): Z3 – up to -34 °C
Family: Asteraceae
More infos: the white flowering cultivar is Symphyotrichum dumosum “Niobe”