A customer of mine wants these dogwoods trimmed back from the walk for trick or treaters next week. By the looks of them, the ones in the first and third pictures are at least half dead. If I trim the dead areas, the shrubs are gonna look really thin. Are these shrubs gonna come back and grow new shoots in the spring if I cut them at the base of the shrub or are they gonners and I should relay that to the customer and rip them out. Thanks.