Cut wire mesh into 1-foot wide strips using wire cutters.
Hammer 2-foot long rebar into the ground at 18-inch intervals along the area where the ferrocement wall is needed using a ball pein hammer. Hammer the rebar until only 1 foot is above ground.
Tie the strips of wire mesh to the rebar using a wire tie at the top of the rebar and at the base next to the dirt.
Mix the cement mixture with water in a bucket using a spade. Use a 2:1 cement to water ratio when mixing. This means you will use twice as much cement mix as water.
Apply the cement to the wire mesh while wearing rubber gloves. Apply slowly to allow the cement a little time to cure while you are working with it. You want the cement to dry as it connects to the mesh before adding more cement because the wet cement is heavy and will bend the mesh or fall off the wire.
Apply a second layer of cement to the wall after the first layer has completely dried. Use a trowel to smooth the second layer.