The HydroHat Dripper evenly waters around the base of a plant. It is available in 6, 9, or 12-inch diameters. It works in all types of pots and growing mediums, as well as in soil and hydroponic solutions. A gap is purposely made on one side to allow it to be slipped over the stem without damaging the plant. Each one comes with 3 removable support stakes, which keep the dripper in place and stable.