This is by far the Rolls Royce of potting mixes. It contains a 6-9 month release fertilizer. The water holding capacity is increased by the inclusion of water crystals and wetting agents. This mix also contains peat moss which holds water and buffers pH. This is a great mix for most plants; indoor and outdoor ornamentals, as well as making growing vegetables in pots very easy. This is a popular top of the range potting mix.