I'Riga - ceramic irrigation pot 400 ml for potted and garden plants B'RIGHT. Placed in the ground and filled with water, the water passes through its entire surface, watering directly the plants roots. This solution significantly reduces water runoff and evaporation losses. How to use: place pot in the ground and fill it with water. Refill the water every 5-7 days. Save up to 70% water and take care of your plants also during holidays or business trips!. Product Material : Clay.