Green spaces without soil?
Almost all plants grow in soil. Unfortunately, dirt crumbles easily and can be very difficult to work with. Hydroponic conditions work for some plants, but require large and often expensive equipment. Pafcal, an innovative new material designed by Suntory through its flower business and plant science, can overcome both of these problems. Pafcal is made from polyurethane and other material that distribute water evenly. It has a lightweight structure that can maintain the right air-water balance from the top and bottom for long periods of time. Other artificial soils used in hydroponic cultivation, including rock wool and melamine resin, do not regulate the water-air mix. The use of Pafcal accelerates growth in most plants, and has allowed us to design an easy green wall system using simple vertical greening techniques.