Finally, a low-cost, field-tested way to water trees! Our Tree Ooze Tube Watering System is the perfect way to establish new trees, plants or shrubs or water hard-to-reach plants. It will automatically release the optimal amount of water in a steady drip that only requires refilling every two weeks. Because it's above ground, it's easy to see when it needs refilling. Designed by an ISA Certified Arborist.