Add a bit of summertime flair to your garden with a colorful container of sun-loving perennials. Donna Wiley, Mt. Cuba Center's Formal Gardens Horticulturist, unlocks the secrets of design as you combine native plants into an eye-catching display that lasts throughout the season and into the fall. Bring pruners, gardening gloves, and your own container (12 to 14 inches wide and at least 10 inches deep). We supply the rest.