Potting soil is a common term used for the soil used in pots where the plants are grown. This potting soil has to provide all the nourishment in the confined space to the plant. This is definitely a challenging task and hence this soil is made in a special manner. If you are a gardener by hobby or by profession, you might know the process. It is a mix of peat, composted bark, sand, perlite and recycled mushroom compost. But what happens to the soil after the plant is removed? The plant might be diseased or would have grown too big to be contained in such a confined space. Efficient waste removal is the key to successful planting.