Liriope On A Slope . Find ideas and inspiration for liriope to add to your own home. A retaining wall helps stabilize the soil and define different areas. Variegated liriope, Perennial garden, Garden fencing from www.pinterest.com It will grow in deep shade or full sun, sand or clay. Here are some ideas on ground covers to use on slopes in full sun, liriope, mondo grass, sargent juniper, creeping juniper, asiatic jasmine. This groundcover plant is also straightforward to grow and.