1 2 3 4 5 6 Sifting the old rock beds is labor-intensive and requires a few steps. (1) Find a rock bed that is full of weeds. It shouldn't be too hard. They are everywhere. (2) Get a shovel, wheelbarrow, and a sifter. Place about 4 shovels worth of rock into the sifter. Move the sifter back and forth and remove weeds/trash until it looks like picture 3. Picture 4 shows the dirt and rocks smaller than 1/2 inch that fell through the sifter. Dispose of this on the rock pile. (5) Put down new landscaping fabric in the rock beds and pour sifted rock on new fabric until it looks like picture 6. This is a good job for 2 or more people. Try to find a rock bed that will allow you to work in the shade for a while. Some of the islands on the north side of the building have been sifted. Pretty much all other rock beds around the building also need to be sifted.