During winter, when temperatures drop below freezing, water in the soil and within the tree's vessels can freeze and form ice crystals. These ice crystals can damage cell walls and disrupt the movement of water and nutrients throughout the tree.

However, due to the strong cohesive properties of water molecules, water can continue to be transported through the tree even in freezing conditions. The water molecules stick together and form a continuous column that allows water to move from the roots to the leaves.

This cohesion helps maintain the tree's internal water balance and prevents dehydration and damage to the cells, allowing the tree to survive the harsh winter conditions.