Concrete stones stack and lock.
Many concrete retaining wall stones stack and lock atop each other, such as the stones in our project. Often prestained or textured, they quickly create sturdy, natural-looking walls. Always start with a solid, level base. Walls less than 3 feet high can be installed without mortar, cement mixing, reinforcement such as rebar, or special tools. Walls any higher require professional expertise to avoid a very dangerous potential for collapse.
Here are some other ideas for this building technique.
Problem: The area beneath a tree is shaded and a difficult place to grow a lawn. Solution: Build a retaining wall two blocks high around the tree's drip line. Fill with soil (don't mound it against the tree trunk) and plant shade-tolerant annuals and perennials or a shade-loving groundcover.
Problem: Drainage and soil are poor, but you'd like to grow vegetables. Solution: Build raised beds and fill with composted manure and soil. A sunny raised bed will ensure proper drainage, and the stones absorb and hold heat so the soil will warm earlier in the spring.
Problem: The uneven areas around your hot tub or deck steps are hard to plant. Solution: Build terraces into the sloping area and alongside the steps.