Dew Right Tree Water Bag
The Dew Right Tree Water Bag is a 20 gallon watering bag designed to prevent the severe water stress many new trees experience after transplanting. Through the process of drip irrigation, the Water Bag releases water directly into the new tree's root system, providing it with nourishment as needed. Made from UV-stabilized heavy duty green-coated polypropylene, the Water Bag features nylon webbing, poly straps, and black nylon zippers.
These are great for what I need, our soil is so sandy, my fruit trees dry out quickly. When I water with these, I know my trees are getting what they need.
Doesn't work as well if the tree is not of a certain height (so it doesn't work as well on my short, shrubbier avocado tree). But otherwise, it works as advertised.