10/17/2026
Why do some trees *not* change color? 🌲
Pines, spruces, and holly are all examples of trees that keep their green leaves active all year round. These trees all have different answers to surviving the drought of winter. Thin needle leaves reduce leaf surface area so the tree loses less water to evaporation and the waxy coating on the leaves of holly and rhododendron seals water inside, allowing these trees to make the most of what little water is available.