Ruby (H5) flowers, VIII–IX; yellowish green foliage in summer, turning bronze-red in winter; height 31–45cm; spread 31–45cm.
Sport on ‘Allegro‘; introduced by P. Bakhuyzen & Zonen (Boskoop, Netherlands) in 1981.
Name is an allusion to the parent name allegro – con brio is also a musical term meaning briskly.
