At the time your trees are installed, the planting crew will water in the tree as required to last for 5 to 7 days. The 'soil well' built around the tree is for watering purposes and should remain intact for the first year. When watering your tree fill soil well with a water hose and allow water to soak in. Repeat this process 3 or 4 times for deep watering. Normal hand watering for the first year is every 5 to 7 days as needed during hot summer, in cooler months water at 2 to 4 week intervals. Check moisture level with moisture meter before watering especially after a heavy rain shower.
Caution - There is no set watering schedule. Only water as needed. Check the moisture level first. Sprinkler systems are not sufficient when it comes to properly watering your trees. Trees require deep watering.