Hope for unattainable love - A blue rose is a flower of the genus Rosa (family Rosaceae) that presents blue to violet pigmentation, instead of the more common red or white. Blue roses do not exist in nature. Faux blue roses were traditionally created by dyeing white roses, since the flower lacks the gene that produces true blue flowers. Nominal 'blue roses' have been bred by conventional hybridization methods, but the results, such as 'Blue Moon' are more accurately described as lilac in color.