How can I efficiently construct a block wall for my backyard landscaping project?

To efficiently construct a block wall for your backyard landscaping project, start by planning the layout and marking the area. Prepare the foundation by digging a trench and filling it with gravel and sand. Use a level and string line to ensure the blocks are straight and level as you stack them. Secure the blocks with mortar and allow time for it to dry before adding more layers. Finish by filling any gaps with mortar and adding a capstone for a polished look.