If there is some new growth, the frozen plant should be salvageable. To revive damaged plants, use a sharp knife dipped in rubbing alcohol and cut away the damaged parts, removing all tissue that looks soft or has brown in it. … Put container plants in a dry place away from direct sun.
Furthermore, can a frozen plant be saved?
While saving frozen plants is possible, freeze damage to plant tissue and other cold injuries can often be prevented. When frost or freezing conditions are expected, you can protect tender plants by covering them with sheets or burlap sacks. These should be removed once the sun returns the following morning.