I have been trying to find a Hoya flower that has shades of blue for years now. I have spent an incredible amount of time trying to flower Hoya medinillifolia, because it was supposedly the only blue flowered Hoya. That will be a story for another time, but for now. Hoya solaniflora holds the honor of the blooms with the most bluish/purple coloration that I have seen to date. As a side note, the flowers are very fragrant in a very pleasing way.
