Mulchex 2 Cubic Feet Pure Canadian Cedar Mulch. Dyed Red. It is ideal for landscaping and gardens. It is ideal to use as a ground and bed cover. It delays weed growth and helps retain moisture in the soil. Mulch beds can dress up your garden to provide a unifying effect in your landscape while insulating plant roots and moderating soil temperatures. Mulches conserve water, and also help control the spread of disease because they provide a barrier between weeds and the soil, which also blocks the germination of many weed seeds.