, especially after heavy rainfall. Dig out any perennial weeds and then apply your chosen mulch over the area to a depth of 3-4 inches. To make the mulch last longer consider applying it over a permeable membrane or planting fabric, this reduces contact between the soil and the mulch and slows down the degradation of the mulch. Always make sure that the soil is fully saturated with water before applying any mulch or it may prevent vital moisture reaching your plant roots.