system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How do grass and trees survive prolonged sub-zero exposure?

I get that plant cells have huge vacuoles, but wouldn't the freezing of the cytoplasm overcome those volumes? What about nutrient transportation (like tree sap)?
gpt
Trees have the ability to not run water/nutrients close to the outside when its winter, this is somewhat to prevent freezing. This also creates age rings in the wood, since the water level and therefor color changes based on the temperature.