20 PCS Plant Waterer, Self-Watering Spike Slow Release

20 pcs plant waterer, self-watering spike slow release vacation plants watering system plant waterer self-watering spike slow release vacation plants watering system automatic watering devices with control valve switch for outdoor indoor plants worry-free planting: the automatic plant watering system is a good helper for gardening because you don't have to worry about your plants every day the plant watering device is perfect for scientific planting because different plants have different absorption the self-watering spikes prevent overwatering and make your plants healthier adjustable switch: with slow release switch for watering plants, you can control the speed of the flow the drip speed is adjustable from 0 seconds 1 drop to 90 seconds 1 drop slow drip speed lasts for 1-15 days depending on how long you are on vacation