Rock Cress, excellent evergreen ground cover producing cushions of pretty purple-blue flowers, can be planted along the edge of a bed or lawn, or in the rockery, but is also very effective in a hanging basket displaying a profusion of color
By the pool.Plants for Containers in the Sun. My favorite perennial for pots in the sun — sedums of all types. I also love grasses with trailing plants, the photo right being a stunning example of combination.
Dalmation Bellflower produces beautiful mounds of purple bell-shaped flowers from late spring through summer. Low-growing plant is perfect for adding color in front of other perennials. Grows only tall. Spreads Prefers full sun to partial shade.