Better-gro special orchid mix is a multi purpose potting mixture for growing cattleyas, phalaenopsis, dendrobiums, paphiopedilums, oncidiums and all epiphytic orchids. The extreme versatility of better gro special orchid mix, makes it the clear choice for orchid hobbyists, small orchid collections and professional growers. It is a dynamic combination of western fir bark, hardwood charcoal and sponge rock that has been specifically formulated by a team of highly trained orchid growers. Better-gro special orchid mix promotes healthy, strong growth by providing superior drainage, allowing for proper root ventilation. Contains 4 quarts.