Precise and efficient: When the potting soil is dry, this spike will gradually and precisely drip water. When the soil is sufficiently moist, the drip irrigation stops automatically. You can also add liquid plant food to stimulate growth. Enjoy your vacation: Enjoy time with your family; your plants can stay away. Use these automatic watering spikes, and you can relax without having to worry about your plants. Our automatic watering system is ideal for watering indoor flowers, outdoor plants, or your vegetables while you're on vacation.