Shasta Forest Products, Inc. has been manufacturing decorative bark products since 1975 and we only use untreated White Fir Bark for the production of our Orchid Bark. Shasta Forest Products, Inc. has found over the years that White Fir Bark is best suited for the orchid grower's needs. White Fir Bark is a denser bark, therefore does not decompose as fast and supports the orchid plant for a longer period of time. White Fir Bark also helps to aerate the roots more efficiently and maintains a better drainage for your orchid plants.