Armeria maritima, sea thrift or sea pink, forms compact mounds of grass-like foliage topped with clusters of pink flowers.

Cute mounds of variegated foliage holds forth spheres of pink flowers.

Armeria pseudarmeria Dreameria 'Dream Clouds' is a long-blooming sea thrift with spheres of white flowers.

Armeria pseudarmeria Dreameria 'Dreamland' is a sea thrift with spherical heads of bright pink flowers.

Ceratostigma willmotianum produces true blue to lilac-blue flowers in late summer and fall against autumn red foliage.

Limonium 'Dazzle Rocks' is a hardy sea lavender with purple-violet blooms all summer long above beautiful green foliage.