Cooler Tour: February 26 2018

Aster alpinus (Alpine aster^[2]) is an ornamental plant native to the mountains of Europe (including the Alps), with a subspecies native to Canada and the United States. It is a perennial forb having purple, pink or blue flowers belonging to the genus Aster. It grows to be about 6–12 inches (15–30 cm). The bloom color may be pink, violet-lavender, dark purple-black, or white-near white and may bloom in late spring or early summer or, occasionally, midsummer. In the UK this plant has gained the Royal Horticultural Society‘s Award of Garden Merit.^{[3] It grows very slowly in clay, silt, loam, silty clay, sandy clay etc. types of soil. Its minimum pH scale is 6 and maximum pH scale is 7.5. It grows erectly in a ‘single crown’ form.}