'Azure Rush' features the same traits as its famous parent Geranium ‘Rozanne,’ a PPA Perennial Plant of the Year, but with 2 ½ inch light blue flowers and a more mounding habit. This heat-loving plant blooms from late May until frost with a vigorous growing, compact, self-branching habit. It’s hardy Zones 5 to 8. Vernalization is not required for flowering.