This tree watering ring provides reliable hydration for newly planted or drought-sensitive trees. With 20 gallons (75.7L) capacity, the bag releases water slowly over 6 to 9 hours, nourishing the tree roots. It reduces the need for frequent manual watering, saving water, time, effort, and money. | Vevor | | Tree Watering Rings, 4 Pcs 20 Gallons Tree Watering Bags, 6-9 Hours Slow Release, Refillable Planting Water Bags | Green | Best Buy