Preparing for a Killer Frost (Zone 6) for your Vegetable Garden

from Red Gardens in Ireland, in what we (America) would call a Zone 6...
"Figuring out how to work around the likelihood of frosts is one of key tasks for any vegetable grower in colder regions of the world, but misjudging when the last frost of the spring might occur and how strong that frost might be, can be the difference between success and failure for certain crops. There are things that we can do to mitigate against the damage of frosts, but sometimes things can be a lot worse than expected."