citrus trees and hard freezes

I have found that most gardeners don't know this simple trick to protecting their fruit trees. When you know a hard freeze is expected make sure to soak your citrus trees from top to bottom making sure the entire tree (leaves and all) are completely drenched right before the  freeze hits. I know it sounds kind of silly but when the water on the trees freeze it actually forms a protective layer of ice on the tree which then acts as an insulator and keeps the tree from freezing. If the hard freeze isn't expected to last more than a few hours any fruit on the tree will be protected as well. However, if the freeze lasts longer than 8 hours you may want to pick the ripened fruit as the cold will cause the fruit to become somewhat mealy in oranges or turn to a mealy soft mush in the case of lemons. This trick also works on most other trees.