Blue is the rarest of colours in the flower world, which is probably why true-blue flowers like gentians cause people like me to gasp and lose my mind, and collect them wherever I can find them. The spring gentian, Gentiana acaulis, shows off each May with breathtaking, gentian-blue flowers, and will cause me to stop what I'm doing, sit down, stare and the flowers and just smile.
I don't grow a lot of morning glories, but I always, always have to have the perfectly named 'Heavenly Blue', with its huge blue flowers. I especially love the brilliant yellow eye and the hint of lavender in the star radiating out from the centre of each petal.
There have been some colour breakthroughs this year, introducing shades of blue to annuals, perennials and an exciting rose announcement. First up is Lantana "Bandana WannaBlue", where as with other cultivars, the florets start out one shade and change to lighter hues as they mature. I believe they introduced Neon Blue lungwort into the genes for this one.