Reports of plants' deaths might be greatly exaggerated.

Dennis Horazak, Plant Kingdom Correspondent

This message is for all homeowners who are dealing with plants that were damaged by the recent freezing weather. LEAVE THEM ALONE! Don't prune or trim anything until the spring. This advice comes from WLCA's Certified Consulting Agronomist-Horticulturist, who cautioned against pruning freeze-damaged plants - even if they look "dead" -- until they have a chance to recover. Plants rebound first at their tips and along their edges, and cutting those parts away now undermines the plant's chances for survival. Also, the dead material helps to protect the underlying live plant in case there is another freeze.
For these reasons, refrain from pruning until the spring, when everything will look much better.