1. Does it Suit My Trees? This lowprofile tree watering ring is perfect for ly planted trees, evergreens or shrubs, with branches beginning only 6' from the ground or higher, and the trunk Max diameter is 5.7 inches(14.5cm) 2. How it Works? Water ring is professionally designed, holds up to 15 gallons of water with a continuously water for 4 to 6 hours, two PVC emitters provide drip irrigation system for even water distribution, fill just 1 to 2 times per week or as needed 3. Is it Easy to Install? Very simple and easy to install, no need special tools. Place the bag on level ground around the trunk, filling via hose, pipe or other suitable way, the diameter of the filling cap is 1.5inch, make sure to use suitable hose to fill the bag, walk away after filling, automatic watering saves your effort 4. What is the Benefit of Using This Bag? Deep root watering is the way to reduce the effects of transplant and drought shock, absorption eliminates water waste, saves your time, money and effort; Plus brown color and low profile can blend with existing landscape