Sweet Williams is a type of carnation that belongs to the Dianthus family native to southern Europe. They are colorful and scented, are perennial or biennial, and have been revered since the Greek and Roman eras. Most varieties of the plant grow up to 7 to 18 inches and bloom in hues of red, white, pink, crimson, scarlet, and violet. Sweet Williams is also a favorite edible flower used by chefs. So, the next time you want to garnish your dish, you know which flower to pick!