Giving freshly cut grass a run for it's money, taking in a deep waff of mulch might just be the best thing to go through pathways when working on a yard. But using it can be hit or miss. As horticulturist William Fountain says "Mulching is one of the best things that we can do for plants in our landscapes or one of the worst things we can do to them." So here are the facts and the fiction surrounding these little chips of wood.