Arctostaphylos uva ursi
This native evergreen ground cover thrives in well-drained soils, even in sand. It needs little care. Prostrate trailing branches thickly covered with small, dark green leaves yield white or pink blossoms in late spring. Bright red edible berries follow, lasting well into winter. Native Americans valued the berries as food and the leaves in smoking mixtures, though now the fruit is most often eaten by birds. It is a beautiful way to cover a lot of ground in a hurry.
It is great for sunny slopes and cascading down from atop walls. 4 inch pot. It is self fertile and grows in USDA Zones 5-10.