Abstract: A kit of modules simulating brick masonry, for building low walls. In each principal module, individual masonry elements are stacked horizontally, so that each principle module simulates one course of masonry. Three varieties of principal modules are provided, including a base course, an intermediate course, and a top course. The base course has a flat bottom surface, and a simulated horizontal mortar joint extends across the top. The top course has simulated mortar joints inscribed on the top surface, and has a simulated horizontal mortar joint extending across the bottom surface. The intermediate course has no horizontal joint, relying instead on those provided by the top and base course modules. A minor module simulating a mortar joint for the end of a brick is provided so that plural principal modules can abut, thereby extending the length of the wall constructed thereby. A preferred application is to build border walls for shrubs, trees, flower beds, and the like.