PRO-MIX has formulated this potting mix to be suitable for indoor and outdoor potting and re-potting plants in containers. It contains a slow release fertilizer that feeds for up to nine months and is formulated with a water-saving gel to hold extra water. This product is also ideal for all seed starting applications. Contains: Canadian sphagnum peat moss, water-absorbent polymer, perlite, limestone, slow release fertilizer, and wetting agent. So give your plants the correct soil they need to thrive today with PRO-MIX!