Cut a 1-by-3-inch cedar plank into four 36-inch-long pieces. Use a circular or hand saw to cut the wood.
Arrange the four pieces of wood on end to form a box frame. Screw the frame together with galvanized wood screws.
Cut a 38-inch square piece from a sheet of 1/4-inch thick plywood. Set the plywood sheet over the back of the frame and nail it in place.
Flip the frame over. Fill it with potting soil until the surface of the soil is flush with the top edge of the frame.
Cut a piece of 1/2-inch grid wire mesh with wire clippers so it fits over the top of the wood frame. Staple the mesh over the top of the frame so it holds the soil in place.
Water the potting soil inside the frame until it is evenly moistened but not soggy. Avoid over-watering, as you don't want moisture draining out of the frame.
Poke a planting hole in the soil, through the wire mesh, using a pencil. Plant the succulent plant in the hole. Use the eraser-end of the pencil to firm the soil around the plant's roots. Plant the remaining succulents in the frame using the same method, placing them as closely together as the mesh allows so the majority of the mesh is hidden by the young plants. The remainder of the mesh is covered as the plants grow.
Lay the frame flat in a warm area where the plants receive bright, indirect sunlight. Water the plants after two weeks, providing just enough moisture to dampen the soil.
Tug gently on the succulents after two weeks. If you feel resistance, the plants have rooted sufficiently for hanging. If they pull out of the soil, allow them to root for an additional two weeks.
Hang the frame from sturdy picture hooks on an interior wall that receives bright sunlight. Water the succulents once monthly. Remove the frame from the wall and lay it flat to water. Hang the frame back up after the exterior of the frame dries.