The Garden Professors blog has two interesting and related posts describing how cold-hardy plants can survive temperatures well below freezing. If you are a gardener or farmer, you might be interested in reading about this. The two posts are listed below:
Part 1: The mechanics of how plants survive cold temperatures
https://gardenprofessors.com/a-gardeners-primer-to-cold-hardiness-part-1/
Part 2: How you can use this knowledge to help your plants through cold snaps
https://gardenprofessors.com/a-gardeners-primer-to-cold-hardiness-part-2/
