Self Watering Spikes?Slow Release Control Valve Switch Automatic Irrigation Watering Drip System?Adjustable Water Volume Drip System for Outdoor and Vacation Plant Watering-12Pack?6 green&6 blue? by QQCherry

ADJUSTABLE VELOCITY DESIGN: The plant watering Device with control valve can control the dripping speed of 0-60s/drip. You can set traffic for 3-15 days or More depending on the time you need and will never kill your plants because the water is flowing too fast or too slow. SIMPLE AND CONVENIENT TO USE: 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. and then insert it into the soil SUITABLE FOR DIFFERENT BOTTLES: The plant self watering devices are suitable for all most bottles. it not only can be used for 1-inch bottle, but also the new waterer suitable for the bottle from 0.8in to 1.2in. Don't waste time finding the right bottle, most bottle make the self-watering system work. Such as Coca-Cola bottle, soda bottle, even the wine bottle. NEW DESIGN ANTI-COLLAPSE: The self watering devices new bracket has the feature of anti-collapse when the fitted bottle is too large. Its automatic watering device won't rotate simultaneously when you twist its switch, and self watering spikes for outdoor plants is easy to adjust the water-flow. ECO-FRIENDLY AND DURABLE: The plant self watering spikes system made of high-quality PP plastic and you can use it repeatedly because each irrigation drippers ensure long service life. The plant waterer for outdoor plants with high strength and toughness, good heat and cold resistance, safe and durable. Recycle plastic bottles effectively. it reduces waste and protect the environment.