Martins Regular Potting Mix with the addition of coir has an improved water holding capacity greater than most regular grade potting mixes. This mix is a general purpose potting mix suitable for indoor and outdoor use. It is a high quality free draining mix suitable for most plants. When planting natives we suggest using Martins Native Planting Mix. The inclusion of a soil wetter in this mixture will assist in water penetration, eliminating water run-off and improving the re-wettability of the potting mixture for up to six months after potting up.