Many were given cultivar names such as ` atrococcineum ' ( dark scarlet flower heads ) , ` atrosanguineum ' ( dark blood-red flower heads ) , ` aureum ' ( golden yellow flower heads ) , ` bicolor ' ( red-tipped yellow flower heads ) , ` compositum ' ( large multicoloured flower heads ) , ` macranthum ' ( large rose-edged white flower heads ) , and ` monstrosum ' ( flower heads with many bracts ) , although today they are generally sold in mixed seed for growing as annuals .
Many were given names such as ` atrococcineum ' ( dark scarlet flower heads ) , ` atrosanguineum ' ( dark blood-red flower heads ) , ` aureum ' ( golden yellow flower heads ) , ` bicolor ' ( red-tipped yellow flower heads ) , ` compositum ' ( large multicolored flower heads ) , ` macranthum ' ( large rose-edged white flower heads ) , and ` monstrosum ' ( flower heads with many bracts ) , although today they are generally sold in mixed seed for growing as annuals .