View Gallery Appalachian Antique Hardwoods' Mushroom Board is harvested from commercial beds from around the world. This unique wood has endured years of acid laden compost, moisture, and abrasion and as a result is one of our most favored character woods. Its unique washboard-like surface can be augmented with a variety of different mechanical surfacing options. The natural honey brown coloration and dark black knots make it an easy selection for a rich wood with lots of character. Mushroom Board is an excellent choice for wall and ceiling treatments, cabinetry, door making, and exterior applications.