This Watering Bulb passively keeps your soil moist and your plant watered by releasing water as the soil dries out. Simply fill the bulb with water and quickly turn it upside down, jamming it into the soil. You'll notice it won't empty its water quickly - rather, it will take a few days. Watering the plant before inserting the Watering Bulb gives you the best results, as the Bulb won't immediately work to release water. Perfect for sensitive plants while you're on vacation!