Trees are bountiful, beautiful, and majestic, but these qualities don’t contribute to a tree’s winter survival; or do they? How do pine trees stay green, and thrive, through cold seasons? How do other trees seem to come back to life after winter? The answer is not as complicated as you think. In fact, it is a very interesting and fun fact to learn about all types of trees; especially pine trees, spruce trees, evergreens, hemlocks, and more. These are all examples of trees that do not lose their foliage in the winter. Continue reading to learn how trees combat cold temperatures, snow, ice, and more in winter seasons.
A typical tree is half water. In freezing temperatures, this inner water freezes, and the trees lose their leaves. Trees cannot migrate south for the winter, or generate heat like a mammal; so how do some trees stay green all year? How do they survive? The answer is physiological changes in their foliage, roots, stems, branches, bark, and more in early seasons, and cellular changes once the cold weather hits.
For the most part, in order for trees to not die in the winter, its living cells must not freeze. The dead cells within a tree trunk do freeze, and surround the very few living cells. As for the roots, the snow preserves the ground, and prevents the root system from freezing. This is basically what allows the tree to regrow leaves, and come “back to life” after the cold is gone.
A tree must not become dehydrated, otherwise, it will not survive the winter. In freezing temperatures, the roots cannot draw moisture from the soil, in order to feed the leaves and stems. This is why trees lose their foliage in winter. Pine trees, and trees like them, retain their foliage because pine needles are resistant to drying out. Other trees lose their leaves because of drying out.