Perlite, particularly, horticultural perlite has been used for many years by gardeners and growers. Perlite offers numerous benefits to gardeners and can be invaluable for those with heavy soils when used as a growing medium.
Perlite is incredibly light in weight and is therefore used extensively to loosen and lighten heavy soils and composts for plants that require a free draining medium. Furthermore, it can be used to great success with root cuttings, whereby it can be mixed with compost to produce a light growing medium with much less chance of the cuttings rotting off, which is caused, amongst other things, by compost that is too wet.
Horticultural Perlite can make a considerable difference to heavy, wet and unproductive soil, producing a much lightweight, free draining medium, providing better growing conditions for most plants and cuttings.