Frost Wedge Theory

The Frost Wedge Theory suggests that during cold weather, freezing temperatures create a "wedge" or barrier that separates healthy, live cells in a plant from damaged or dead ones. When frost occurs, it causes water inside plant tissues to freeze and expand, forming ice crystals that can puncture cell walls. This separation helps identify which parts of the plant are still alive and capable of recovery versus those that are permanently damaged. Essentially, frost acts as a natural marker, revealing the plant's resilience and guiding horticulturists on pruning or care decisions.