Spray a line on the ground with spray paint following the pattern the mesh fence will follow. This will provide a visual line to follow when erecting the mesh fence.
Put on gloves and dig 2-foot holes about 6 to 8 inches wide with post hole diggers every 6 to 8 feet along the spray paint line.
Roll a wheelbarrow out to where you will set the first fence post into the ground. Combine 1 part mortar with 3 parts sand in the wheelbarrow and moisten with a hose. Mix thoroughly with a hoe.
Insert the first fence post into the hole and then dump the mortar mix into the hole, filling the hole and surrounding the fence post.
Repeat Steps 3 and 4 until you've set every fence post. Let the mortar mix dry overnight.
Fasten the mesh fencing to the first fence post with a hammer and nails. Stretch the mesh fencing to the next post and secure it with nails. Continue until you've fastened the mesh fencing to each post.