Bachelor buttons (Centaurea cyanus) offer many uses in the landscape, as this European native naturalizes easily in most parts of the United States. Attractive flowers, now in shades of red, white and pink are available in addition to the traditional blue color of bachelor button flowers. Combine red, white and blue varieties for a patriotic display on the 4th of July. Plant bachelor button flowers in borders, rock gardens and sunny areas where they can spread and naturalize. Frilly, showy flowers grow on multi-branching stems, which may reach 2 to 3 feet (60-90 cm.). Bachelor button flowers are reseeding annuals and blooms may be single or double. Once planted, you will be growing bachelor buttons year after year as the reseed freely.