Using stone and rocks to edge your beds gives a timeless beauty to your borders. It's a relatively expensive option, unless you can source the rocks on your property, but it's durable and unlikely to go out of style. Boulders and pebbles are suited to natural gardens with informal, curving boders (shown).
Dragon's blood sedum may be the hardiest and most versatile of all weed-suppressing ground covers. A cultivar of the succulent Sedum spurium, Dragon's blood ('Schorbuser Blut') is hardy in Zones 3-8. Not only does it grow in full sun as well as partial shade, but it also thrives in poor soil.
Lampranthus spectabilis--Trailing Ice Plant. Extremely drought tolerant. Great sunny groundcover. Great in sunny windowboxes. Blooms all summer. Will tolerate winter temps down to about 20F. Good in ATL winters.
DRAGONS BLOOD SEDUM (Gaura lindheimeri) Perennial; Ht: 3”-6" Light: Sun. Spread: 12” Soil: Well Drained. Fast-growing ground cover with brilliant red foliage. A succulent with needle-like leaves which turn vibrant orange-red in fall. The more sun it gets, the more intense the foliage becomes. Exceptionally tolerant of heat and drought and also tolerate cold and being planted in poor dry soil. Low growing Sedum is used for containers borders, edging and as a dense spreading groundcover.