Grow beautiful blooming orchids with Miracle-Gro Indoor Potting Mix for Orchids. Formulated to provide quick drainage, this potting mix is for use with epiphytic Orchids, including Phalaenopsis (moth orchids), Cattleya, Epidendrum, and Dendrobium. One 8-quart bag will fill (5) 6-inch containers (may vary depending on the root ball size).