Autumn aster ageratoides 'Stardust' Purple - Hardy plantNarrow, pink leaves with yellow centres. They look just like daisies! The Michaelmas daisy 'Stardust' (Aster ageratoides) is one of the longest flowering autumn flowers. The flowers bloom from the end of summer until the onset of frost. The Michaelmas daisy can also be planted in pots on a patio, roof terrace or balcony, but it does well in the garden too. The flowers bloom at the end of the summer. Place the plant in full sun or partial shade. Keep