Features large, 2-inch blooms in a mix of colors, including blue, pink, purple, red, white, and yellow, often with contrasting yellow or gold centers and fine white or colored edges. The star-shaped or rounded flowers grow in dense, upright clusters called umbels, rising above the foliage on sturdy stems. Plants typically reach a height of 4 to 8 inches with a spread of 6 to 12 inches.