24Pcs Plant Watering Spikes Self Watering Devices Automatic Plant Waterer with Slow Release Control Valve For Outdoor Indoor Plant

This plant watering spike can control the water flow rate and the dripping speed with control valve. It can be adjusted to provide appropriate water volume according to different plant needs. Installed without any tools, just drill some holes in the bottom of the bottle or cut the tail of the bottle to keep the air flowing, the plant watering devices can be inserted into the soil without worrying about water pressure and water leakage.