Random Color Worry Free Planting: Plant Waterer, Auto plant waterer is a good assistant for the gardening, you dont have to take care of your plants every day; plant watering device is perfect for planting scientifically as different plants have different absorption, self watering spikes can prevent over-watering and make plants healthier. Self Watering Spike. Adjustable Switch-CONTROLLED In contrast to other versions, the newly upgraded valve can effectively control the water flow. You can stop traffic for 1 to 15 days or more, depending on how much time you need. The improved valve flow control is more precise and never kills your plants because the water flows too quickly or too slowly. SUITABLE FOR MORE BOTTLES The 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 bottle. LATEST DESIGN With the new anti-tilt bracket, your self-watering system cannot tip over if the attached bottle is too large. The switch has changed from a circular shape to a square shape. The spikes do not turn with the switch and are easy to adjust and water continuously. Easy To Use: Plant Self Watering Spikes Without any tedious installation, all you need to do is to cut a hole in the bottom of the bottle and tighten the drip irrigation watering devices, and then insert it into the soil, no need nail and no danger.