Pee gee tree. Spread 2 to 3 inches of mulch around the peegee hydrangea, but leave 8 inches uncovered around the base of the shrub so the mulch won't pile up against the base of the trunk. Average Shipping Height: Benefits of this type of tree include: Create a sanctuary for your feathered friends. Winter Care for Hydrangea Plants. Sweet Mockorange. A Southern Tradition HydrangeasHydrangeas. Prune Ninebark Shrubs. Some advantages of natural root trees:.