Rose campion is a short-lived, self-sowing perennial with vivid, purplish-red flowers and silvery-green leaves. The flowers and foliage are very striking.
Lychnis coronaria is an heirloom flower that looks great with old-fashioned roses. It starts blooming in June and continues for most of the summer. It also brightens up a partly shaded garden. Hardy in zones 3-9.