They are several kinds of groundcover that make an excellent alternative to mulch including Sedum, here are some other perennial favorites:
It makes a fantastic groundcover or accent plant in containers. Learn more!
Hardy evergreen groundcover with lustrous dark green leaves accented by lavender blooms in late spring.Learn more!
It tolerates light foot traffic and is excellent between pavers, stones or in rocks and for use as a groundcover. Learn more!
Use it as ground cover or edging plant in shady gardens and woodland sites..Learn more!