Perfect Plants Orchid Potting Mix is blended with all-natural ingredients that encourage orchid roots to climb and expand. Charcoal, Sponge Rock, Pine Bark, and Coconut Chips provide a well-balanced environment for roots to grow to their full potential while absorbing maximum nutrients. Orchid roots also need access to water for when they go dry. Perfect Plants Orchid Mix is professionally blended to balance overall drainage while still giving roots access to moisture. Perfect Plants Orchid Potting Mix comes in a 4 qt. re-sealable, heavy duty bag — perfect for storage or later use.