Plant Nanny 8100 Clear Watering Globe Hand-blown glass watering globes are a simple solution to keeping your plants healthy Since the stake remains in the soil the plant roots will actually grow around the stake and use water more efficiently Water level is visible through the globe even at a distance, so you'll know exactly when to add water Designed to water an average-sized plant, these can be used indoors or on a deck or porch Each unit contains a 5-inch Plant Nanny stake and a globe that holds approximately 12 ounces of water