
Wood chips, wood mulch, and decorative stone are a great way to enhance your landscape, particularly where it’s difficult or impossible to grow grass. I can’t tell you how often we see decorative rock or wood mulch that is not properly installed. In order to keep weeds and grass from growing through wood mulch alone, the mulch needs to be at least 10cm thick if it is a heavy mulch, and 16cm thick for lighter mulches. Keep in mind that both light and heavy mulches will settle by as much as 20%. New mulch should be added after one year to insure the proper depth is maintained. If you prefer not to use such a large volume of wood mulch, a weed barrier may be used. Heavy duty weed barrier is available at most garden centres. It comes in rolls either four feet or five feet wide. Simply measure the…