The genus Sedum has some amazing plants. There are tall ones, short ones, some that spread lots, some not to much. All are tolerant of the heat and drought once established. Then the plant breeders got involved and now we have even more plant habits , foliage types, colours and flower colours. Just pick your size and colour, and Sedum probably has it. It may not be hardy in this area, but many are.
'Chocolate Ball' adds the interest of little plants with brown-red, needle-like foliage bloom with yellow flowers in Summer. Hardy to zone 6, 'Chocolate Ball' may not overwinter in your garden, but it makes a great impact whether in the bed or in a planter. Full sun.
Bloom time -Summer
Hardiness Zone 6