The best time of the year to transplant trees and plants is autumn. This is because of cool temperatures and warm moist soil. Plants also require less energy as they begin enter the early stages of dormancy. They are no longer focusing on above ground growth. This is perfect for root establishment which is just what you want.
These conditions set you up for an easy transition. And that is key to a successful plant move. The less stress the more success! That will be our transplanting mantra moving forward;)
Transplanting trees in fall also gives your plant plenty of time to be thoroughly established and ready for the heat of summer.