Aster is a genus of flowering plants in the family Asteraceae, encompassing around 180 species, all but one of which are restricted to Eurasia. The name Aster comes from the Ancient Greek meaning “star,” referring to the shape of the flower head. Another common name is Michaelmas daisy. Many species and a variety of hybrids are popular as garden plants because of their attractive and colourful flowers and can grow in all hardiness zones. It thrives in areas with cool, moist summers, producing blue, white, or pink flowers in the late summer or fall. Plant height ranges from 8 inches to 8 feet, depending on variety. They also attract butterflies to your garden, and are used as food plants by the larvae of a number of Lepidoptera species.