The term Pozzolan is derived from the ancient term Pozzolana, which refers to a volcanic ash (finely divided siliceous and aluminous material) found on the slopes of Mt. Vesuvius, adjacent to the small town of Pozzouli near the bay of Naples.  The Lassenite Pozzolan deposit, which is primarily amorphous silica, originated 26 million years ago when nearby volcanoes erupted and the volcanic ash was deposited into freshwater lakes.  These freshwater lakes contained large amounts of protozoa called diatoms.  The skeleton of this tiny organism is extremely porous and absorbent which allows for the efficient movement of air and water available to turf and plants.

Western  Pozzolan Corporation, produces a wide array of inorganic soil amendments designed specifically for the golf, landscaping, turf industries as well as other intensively managed turf applications.  These products range in size and temperature of kiln firing depending upon application and soil type.  We kiln fire this material to drive up the hardness and make it more resistant to breakdown. Even in its finest form, Lassenite Pozzolan is extremely porous.  Western Pozzolan Corporation has designed these products to work well with topdressing, hydraulic injection, and drill and fill equipment.