DIY Potting Soil
The basic soil-less potting mix found on big box shelves is composed mainly of Sphagnum Peat Moss some perlite and often contains fertilizer. It can become very expensive particularly for those gardening in containers. Gardener's can mix their own at lower cost in order to grow more plants. Here is a widely recommended seed and potting mix that can be adjusted to one's particular climate and plant needs. Basic Mix with Compost 2 parts well composted manure and other compost. Finely screened mushroom compost is an excellent option. 2 parts Sphagnum Peat Moss or Coconut Coir (Either retain significant moisture. In cooler slower drying conditions it may be wise to lessen the amount of either in the mix.) 1 part Perlite 1 part Vermiculite Perlite and vermiculite are both good at retaining water, but vermiculite acts more like a sponge, holding much more water than perlite and offering less aeration for the plant roots. Perlite retains water because of its large surfa...