Cold and Shiver

Not many people tuck their trees in at night. I'm one of those people.
I have three citrus trees no taller than I am and I cover them up at night. I clip sheets, (that I keep for utility purposes) together and drape them over the branches before dark. The lemon tree is loaded with fruit right now and will bloom in the next few weeks.
It has not been this cold in ten years! 22' F this week, let's wish for clouds!
I can deal with replacing flowers and little bushes, but fruit trees are expensive and take years to produce so I want to protect them.
Nighty night!