Around here we practically need to include decorative boulders in the garden designs. I’d go as far as to say that boulders are an absolutely essential element of the garden. Choosing the right boulder is important. I tend to appreciate a more weathered boulder like the Sandstone boulder pictured here versus a river washed boulder like Wisconsin Granite. You want your boulders to be interesting because when your beautiful garden plants go dormant for the winter, your boulders will take center stage.