Hydroclay

With qualities of water-storing properties. It offers excellent evaporation protection as a top layer. Helps create an ideal soil environment for your potted plants. Lighter than lava, gravel, or similar materials. Does not rot. Can also be used to fill any remaining space in a plant pot containing a smaller plant, real or artificial. Absolutely odourless and plant friendly. Hydro clays are pH neutral. No actual help to nourish the plant. They have no nutritional value and are primarily meant to use as vessels for the other food provided to your plants.