For a sophisticated color spin, display this compact new reblooming Hydrangea in terrace containers and flower arrangements. Each double floret on these 5in Mophead blossoms is variably trimmed in scarlets and pistachio with a blue eye, looking very cool against bright green, toothed foliage. More disease resistant than older varieties. 'Horwack' PPAF

Hydrangea is a valuable genus of some 100 species of shrubs and vines grown for their large and very showy flower heads. Hydrangeas are at their best in summer and fall -- quiet time for most woody plants -- and are worth having for that reason alone. For information on Hydrangea care, click on Growing Guide.