Assessing the hybrid seedlings, Kermit noted one exceptional plant that went on to be named ‘Rhythm & Blues’. Exceptional breeding resulting in large summer flowers of the most vivid blue over a long period. The stiff erect flower stems are coloured black at their uppermost third, a deep black that also colours the calyx. The contrast of the vivid blue flowers against the black is stunning.
It is one of the entries for the RHS Chelsea Plant of the Year competition 2018.