Large non-evergreen trees are best moved in early spring before growth starts. Hardy species can also be successfully moved in the fall upon leaf-drop. Large evergreens are also best moved in early spring. However, spruce and pine can be successfully moved in late August or September. Transplanting shock is severe when large trees are moved in active growth.
Planting Dig each hole about twice the diameter of the container or rootball.
Remove clay subsoil from the bottom of the holes and replace with topsoil when planting. This is especially important near foundations where poor soil may have been used for backfill. Water thoroughly after planting to settle the soil. Supply water every 10 days during the establishment period. With larger size stock, attention to watering should extend through the second or additional growing seasons according to the rule of thumb above.