Leaves Changing In Colorado 2025. Leaves change color each fall when they stop photosynthesis so they can rest for the winter when there isn't enough sunlight. See see our 2024 fall foliage color map to get an idea of when fall leaves change their color.
See see our 2024 fall foliage color map to get an idea of when fall leaves change their color. The green chlorophyll fades, leaving behind the others colors that.