2006 All American Winner. Dianthus x superbus 'Supra Purple' is a hybrid selection with large, lacy, single, purple colored flowers. The flowers are 1.5 inches wide. Plants grow 10 inches tall. Easy to grow and heavy blooming and perennial. Dianthus x superbus 'Supra Purple' is early flowering with great garden performance. A new interspecific cross resulting in hybrid vigor and improved heat tolerance. Grow in full sun to light shade in soils that drain well.