Frost on rhododendron

This plant will provide us with a fabulous show in May of glorious pale pink blooms, in spite of the fact that it is called Cunningham White. We planted it 14 years ago and have done nothing to it, even the secateur maniac leaves it alone. Last year it survived a drought, this year a flood and at the moment sub-zero temperatures. With plants like this it isn't difficult to see why I enjoy being in the garden, is it?