Water new trees once a week, regularly, during the first season, with l0 gallons of water. More for large trees. Pour the water down the trunks so it goes into the root ball, not along the top of the ground. In addition, whenever the leaves droop down or it is very hot, water again and mist the tops with the hose. Do not fertilize the first year.
The width of your bandsaw blade and its tooth set will determine the smallest circle you can cut without damaging the blade or the saw guides. Generally a 3/16-in. blade will cut a radius as small as 5/16 in.; a 1/4-in. blade will cut as small as 5/8, and a 3/8-in. blade as small as 1-7/16. The wider a blade, the thicker it will be and the longer it will stand up and keep its edge.