| This is my understanding of what happens when plant tissue freezes.... Think about what happens when water freezes.... it expands. That is a unique property of water freezing. So, when plant cell tissue is cold enough that any water inside the plant freezes, the water expands and ruptures the cell wall. When the cell wall ruptures, it loses is rigidity (stiffness), and that is why it goes limp. When that happens, it cannot go back to being rigid (stiff) again. So, yes, if you are seeing rhubarb stalks that seems normal - have normal rigidity (stiffness), then I think it is safe to assume that particular stalk did not freeze - did not get cold enough to freeze. And yes, if you have soft stalks, they will die down to the ground on their own. |