Moss Rock Retaining Walls Offer Cheap Retaining Solution. Moss rock retaining walls Adelaide retaining wall contractors Visual Landscape Gardening use, are a cheap, informal way to retain large areas of a sloping block. Adelaide moss rocks come in a range of sizes and shapes, that can be hand picked to build a strong, yet attractive retaining wall. Between the moss rocks, slow growing native creepers are often planted to create a natural … [Continue]