Step 1 : Stake and dig

Set out a stake and string line to mark the location of the wall. Dig a trench along the string line that's about 6-inches deep where the bottom of the wall will rest.

Step 2 : Lay one layer of stone

Using the string line as a guide, lay the first row of stones about 1 inch apart. Pitch the stones at a slight angle, slanting from the outside of the wall to the inside and down to prevent water from washing soil as it runs down the wall.

Step 3 : Fill in spaces with soil and stone

Fill soil between stones and add about one inch of soil to the top of the row. Backfill each stone and pack it in firmly to avoid air pockets and loose soil. Pay attention to spacing between rows and fill behind the stones with soil.

Keep the rows straight by periodically checking that it is level. Stagger the rows so the stones rest between the two lower stones to spread the weight.

Step 4 : Insert decorative plants

Leave spaces between the stones for plants to cascade over the top row or in between stones. Insert them as you build the fence.