The clay substrate Liaflor is an ecological, proven raw material for healthy indoor and terrace pants as well as for professional hydroponics. The Liaflor substrate is based on the use of natural Liassic clay. This is baked in a rotary oven at a temperature of approximately 1,200 °C, expanded, and sieved. Liaflor is frostproof, non-flammable, germ-free and chemically and biologically neutral.