Expert Gardener Black Mulch is a ready to use mulch made from Canadian natural recovered forest products. This mulch has been coloured a rich black that is long lasting. Expert Gardener Black Mulch will not only add attractive colour and texture to your gardens to allow your plants and shrubs/trees to pop, but it will help to reduce the growth of weeds as well. Expert Gardener mulch helps to retain moisture in the soil and provides excellent winter protection for plants. For maximum weed suppression and moisture retention, it is recommended that Expert Gardener Black Mulch be applied at least 2” to 3” deep.