Centaurea Black Ball, also known as Bachelor's Buttons is a dramatic, nearly black, burgundy garden stunner. Captivating, rich colored, 1.5" inch disk shaped double petal blossoms float atop attractive silvery foliage. A fabulous addition to Gothic and Mourning gardens, Black Ball is easy to grow and will typically bloom from early spring through first frost when harvested regularly. This exotic favorite is edible and makes a stunning garnish to cocktails, salads and desserts. Packet: 100 seeds.