Most folks will use one kind of mulch or another, depending on the plants and how frequently you will want to reapply or replace, however you could potentially cover pine bark with cedar. Pine Bark mulch will decompose more quickly and be reapplied as needed. Cedar mulch decomposes more slowly, but when reapplying you will want to remove the old mulch and then apply fresh mulch in its place. If you have young, tender plants, then cedar mulch may damage them.
We apologize, but per the manufacturer, the Organic Pine Bark Mulch chips vary in size and there really is not a standard measurement that can be provided.
