Lemonade with black shadecloth
This is black shadecloth wrapped around the lemonade tree as a temporary measure. Good results can be had from hammering four stakes around a tree, then stapling frost cloth or windbreak in a double fold over the top of the trees.
This method protects them from descending frosty air at night, and from hail, but just as importantly, it still allows free air movement around the tree rather than trapping the tree in a cage of cold shade, which too much over-zealous protection can do.
Planting location is important too. Think ahead and don’t plant your trees where winter shade is going to last half the day. They like to warm up and get those rays when the sun is about.