The use of simple, easy to operate, the soil humidity and automatic watering and humidity reaches a certain degree after automatically stops and does not cause the waste of water resources in the nor because the water too much or too little and effects on plant growth When you go out or do not have time to water the flowers every day, just filled the bottle with water, it can automatic watering your flowers (if you want to travel for a long time do not know how much water is, you can put 3 days to test how much water is needed, so that you can measure every day how much water, you travel days x daily water demand can calculate the total water demand). So that the flowers and plants to maintain a certain soil moisture, will not be too wet or dry. If the soil is too wet, it will automatically stop the drip irrigation, if the soil is dry, it will absorb water from the basin automatically watered until the soil to keep the water needed for the wet. water, while reducing the trouble of fertilizing. No electricity and no pump no pollution, the use of simple and convenient operation, the soil humidity and automatic watering and humidity reaches a certain degree after automatically stops and does not cause the waste of water resources in the nor because the water too much or too little and effects on plant growth. The flow rate can be controlled, and the plant watering device with a control valve can control the drip speed 0-60s / 1 drip, and the sustained-release drip lasts 1-15 daysSimple and convenient, without any cumbersome installation, just drill some holes in the bottom of the bottle or cut the tail of the bottle Accurate water volume, to provide different amounts of water for different plants and flowers,other watering plants either have too little or too much water. In some plants, the old leaves just turn yellow and fall. But if the new growth is turning yellow, it may be a sign of over-watering or underwaterSuitable for many bottles Material: PP Package Included : 8 x Self Watering Spikes 8 x Valve Switch