This Soilless Carbon Mud Sponge is lightweight and clean which can be as a potting medium. It can be hung on the wall to green your home and save space, and can be effectively increased survival rate and conservation rate of planting. The sponge features water retention and breathability which is suitable for planting any flowers and plants. It is a green flowerpot to reduce environmental pollution. It does not contain soil, and nearly has insect or disease problems. It can avoid getting too much water for the plant, and promote root's growth.