Sapphire Aster.
The fluffy and finely textured Sapphire Aster plant (Aster 'Sapphire') is a fantastic selection to brighten your late-season garden with unexpected bright color! Featuring large, fluffy, lilac-blue flowers with cheerful yellow centers, these cultivars of the hardy native selection bloom with abandon from August through September!
With its perfectly clean, compact, dark green foliage forming rounded mounds of leaves, they are great as low-growing backdrops and accents... - Sapphire Aster.