Okay, we bought 35 1 gallon photina and are in the process of getting them planted. The guy at the nursery made a suggestion. He said to take some pieces of six inch pvc pipe three feet long and bury beside each plant about two to two and half feet deep.There is about a foot or so sticking out of the ground. Fill these pipes up let it soak in and fill them again. Do this once a week for about the first year depending on the rainfall. He said this would get the water down to the roots where the plants need it and would also encourange good root growth. His opinion was that a soil basin around the tree only allows the grass roots to get most of the water. Anybody ever heard of this technique?