This humidifier is ideal for your garden with dimensions 5 x 17 x 5.5 cm. When there is less water in the soil and the plants need water, the water will automatically penetrate the soil to provide the water the plants need. You need to dig a hole in the soil and then place the stake in the soil. This set of ceramic plant watering spikes is suitable for potted plants, indoor plants, terrace plants, hanging plants, and outdoor gardens.