Worry-free planting: Plant sprinkler, the automatic plant sprinkler is a good helper for gardening, you don't have to take care of your plants every day; The plant watering device is perfect for planting Scientific, because different plants have different absorption, self watering spikes can prevent over watering and make plants healthier. Self-watering tip. Adjustable Switch - CONTROLLED Unlike other versions, the newly upgraded valve can effectively control the water flow. You can stop traffic for 1-15 days or more depending on how much time you need. Control Improved valve flow rate is more accurate and never kills your plants because the water flows too fast or too slow. SUITABLE FOR MORE BOTTLESThe new upgrade design can be used for most bottle sizes. Don't waste time trying to find the right bottle. The automatic irrigation system can work with most bottles. LATEST DESIGNWith the new anti-tip bracket, your self-watering system cannot tip over if the bottle attached is too large. The switch changed from a circular shape to a square shape. Points don't turn with the switch and are easy to adjust and water continuously. Easy to Use: Planting self watering spikes Without any tedious installation, all you need to do is drill a hole in the bottom of the bottle and tighten the drip irrigation devices , then insert it in the ground, no need for nails and no danger.