I've just spent a ton of money re-planting several large beds only to wake
up this morning to find that deer have visited overnight and stripped most
of the plants.

Two questions...
* What to do with the plants that have been mauled by the deer, especially
the roses. Should I prune back the areas that have been stripped?
* As most of my garden is surrounded by large hedges there are only a couple
of areas the deer could have penetrated. What are the best options for
securing the parameters against further deer raids?