Researchers in Japan have successfully genetically engineered a true blue rose, a feat previously thought impossible. Roses naturally lack the enzyme to produce blue pigments and the necessary "co-pigment" molecules to create a blue hue. To achieve the violet-blue color, the team at Suntory Global Innovation Center inserted four genes from other blue flower species, including one for the blue pigment delphinidin and others for the helper molecules flavone C-glycosides, into a light pink rose. This breakthrough builds upon earlier attempts, which resulted in purplish-colored roses, and could have a significant impact on the world of botany and beyond, even influencing poetry and art.