‘Brilliant’ features the awesome orange-red flower made famous by Georgia O’Keefe in her classic paintings.  The flower simply has no equal in the garden and is excellent as a cut flower (an old trick: burn the end of the poppy flower until blackened or dip in boiling water for several minutes to make the flower last longer).  Since poppies go dormant in mid-summer its a good idea to plant then amidst other summer blooming perennials.