Description With a particle size of between 5 and 16 mm, and a density ranging from 325 kg/m3 to 750 kg/m3, arlite has multiple uses in the field of gardening and construction. The expanded clay keeps the soil moist for much longer and is recommended for hot and/or sunny places. Using expanded clay keeps the soil moist and makes it less necessary to water it as often. Therefore, we can say that expanded clay helps us save water costs. To save water, it is advisable to place a layer of clay balls on the surface of pots that are in semi-shade. You should never put clay balls on a plant that is in the sun, as doing so could burn the roots. In addition, arlite can be used as a decorative element. Another function of clay mulch is to prevent roots from rotting, improve soil drainage, protect plants from the cold and prevent weeds from growing.