There are many reasons to transplant a shrub. Whatever that reason is, success at transplanting is better if the move is made during the plant's dormancy. Late winter to early spring is best, with fall being acceptable if absolutely necessary. Never transplant shrubs in the summer, as the shrub's vulnerable root system cannot tolerate the higher temperature.
Remove weeds from the transplanting area, loosen the soil and dig a hole approximately 24 inches deep.
Gently cinch up and tie the branches of the shrub with string to keep the branches out of the way while digging and to give support to the shrub during its move.
Dig up the shrub with a shovel. Dig around the base of the bush to a depth of approximately 24 inches. Gently undercut the shrub to loosen the root ball from the soil.
Lift the shrub from the soil, keeping as much of the root ball intact as possible.
Wrap the root ball in burlap or a sheet of plastic to help keep it from falling apart and retain moisture.
Carry the shrub to its new location. Gently remove the burlap or plastic and set the shrub into the previously prepared hole.
Fill the space around the root ball with soil until the entire root system is covered. Gently tamp down on the loose soil to help give the shrub support.
Soak the soil with water. Spread a 2- to 4-inch-thick layer of mulch around the base of the shrub to help the soil retain much-needed moisture