Barkdust is the recycled outer layer of trees that are milled for lumber. It can also be produced by way of composting yard debris. According to the Mulch and Soil Council, bark is the “corky exterior covering of trees” and does not exceed a wood content of more than 15%.Click to see full answer. Simply so, is bark dust the same as mulch?In agriculture, gardening, and landscaping, barkdust (also bark dust, bark chips, bark mulch, or beauty bark) is a form of mulch produced out of chipped or shredded tree bark. Coarser forms of barkdust may be known as bark nuggets.Additionally, what type of bark mulch is best? Shredded bark is one of the most common and least expensive types of mulch. It comes from a variety of sources, including cedar trees. Shredded bark is one of the best mulch types to use on slopes and it breaks down relatively slowly. Subsequently, one may also ask, what is bark dust used for? Bark dust, also called “beauty bark,” is commonly used in gardening and landscaping. It helps regulate the temperature of the underlying soil, preventing water loss and erosion as well as affecting the soil pH.Does bark dust prevent weeds?Bark mulch is used with ornamental shrub planting as a method of weed control. Bark mulch suppresses weeds by blocking light that seeds need to germinate, but it doesn’t completely prevent weeds. It also helps retains moisture in the soil and keeps plant roots cool in hot weather.