"I primarily work with local woods,” Harvey says, “often with pieces that might otherwise be hauled away to the chipper. My favorite types of wood are Bradford Pear, maple, cherry, hackberry, ash, pecan, and walnut.” But while the wood species is important, the striking coloration of many of Roger’s pieces comes from ‘spalting’. Spalting is caused by fungi that invade the fresh wood, creating beautiful abstract patterns and variations in color. Maple and hackberry are particularly prone to this process. Harvey will sometimes push this natural coloration even further with alcohol inks.