The growing media for growing interior plants requires careful preparation be cause the plants must live in it a long time. Growing media for interior plants should be porous and have a good water holding capacity. Such media should have approximately 50% air space. Most of the completely artificial mixes work exceptionally well. There are many different types of these mixes on the market. It is often better to purchase a prepared mix than to mix your own. Purchased mixes are generally sterile and free of weeds and insects. Mixes you prepare yourself often must be sterilized, especially if natural soil is one of the com ponents.
When you buy a soil mix, choose one that is coarse in texture. Do not pur chase a soil mix that has a fine, powder-like texture.