- Diervilla x splendens Firefly™ Nightglow™
In late spring and early summer, this diervilla displays a yellow flowering that contrasts vividly with its rich purple-red foliage. More than 90 centimeters wide and high, the easy-to-grow shrub adapts well to different soil types, both in direct sun and in light shade. Where there is fewer than six hours of sun, however, the coloring of its foliage is less pronounced. This shrub is hardy to zone 4.