This is a follow up to Protect flowering fruit trees from frost
Background: We have several fruit trees in our back yard. They are in full bloom at the moment. It was supposed to be pretty cold last night. (I don't know what the actual low temperature was here overnight.)
We had enough tarps and Christmas lights to cover some trees, but not others. So, other than waiting several months, is there a way to tell if the uncovered trees were damaged by the cold?