Limonium latifolium (Sea lavender)

(5 user reviews)

This drought-tolerant perennial is noted for its vivid indigo flowers along deep purple-black stems, which gives it a bicolor appearance. It blooms in early summer and then sporadically if spent flowers are deadheaded. It forms an upright clump, with the flower spikes rising to 2 feet in height; its wrinkled, softly hairy leaves form a mound 1 foot high. Plants spread 1 or 2 feet wide. These are some of the showiest plants for containers and mixed borders. Butterflies love them. 

This hybrid of S. nemorosa and S. sylvestris is a drought-tolerant perennial that lends vivid purple-blue hues to the garden from summer to early fall on 1.5- to 3-foot-tall spikes. Deadheading prolongs bloom. The spikes rise from a clump of silvery green leaves that grows to about 2 feet tall and wide.

(1 user review)

This drought-tolerant perennial bears abundant pure blue flower spikes in early summer and until fall if spent flowers are removed promptly. It forms an erect clump 20 inches tall by 18 inches wide, with wrinkled, softly hairy leaves.

This short-lived perennial from the Himalayas has scented, hairy leaves and forms a small shrub 2 feet tall by 2 feet wide. It bears 1.5-inch-long purplish-blue flowers with white lips (called bee lines) from early to late summer. The flowers are clasped by rusty colored calyxes that accent color of the blooms. Salvias are some of the showiest plants for containers, annual borders, and mixed borders. Butterflies and hummingbirds love them.