The Michaelmas Daisy is a species of flowering plant in the Asteraceae family. It is also known as the asters, and its scientific name is Symphyotrichum novi-belgii. The Michaelmas Daisy is native to Europe and North America, and it is a popular garden flower. It blooms in late summer and early autumn, and its flowers are usually purple or white. The Michaelmas Daisy is a symbol of the autumn season, and it is often used in floral arrangements.