Best Plants To Cover A Retaining Wall. For shady walls epiphytic plants such as bromeliads and ferns can be mounted during summer onto walls posts or rustic branches. This plant will grow like crazy so be prepared to prune it back every year to keep it under control.
If you have a wall that is cooler and gets partial shade you can try English ivy Virginia creeper chocolate vine and climbing hydrangea. Having plants on the top of retaining walls gives your entire landscape a more wild natural look that is very aesthetically appealing. With their long trailing stems these are plants that grow naturally as groundcovers but when given a little height will attractively cover the vertical rather than the horizontal.
It is a simple planting colorful for months on end in summer and very drought tolerant.
Plus consider making the area interesting with adding colorful perennials and ornamental grasses. Osmanthus burkwoodii performs happily when grown against a wall or fence in sun or shade where its glossy dark green leaves make a neat backdrop but it is particularly useful for bringing light and interest to shady spots in April and May when the highly scented white jasmine like flowers appear. Give them strong support base for fast growth. Plus consider making the area interesting with adding colorful perennials and ornamental grasses.