How to Build a Garden Gate

To prevent rot, wrap the sections of post to be buried with self-adhesive flashing, from near the bottom to just below ground level. Use the posts to tamp 6 inches of drainage stone into their holes; place them, and add another few inches of stone to hold them plumb. Pour dry concrete mix into one of the holes, filling it to just below the flashing. Add water until the mix is saturated, and stir it with a stick. Before setting the second post, use a board and a level to make sure the posts are the same height. Hold the board up to their faces to make sure they're not twisted. Allow the posts to sit undisturbed overnight, then sand and prime them.