Chlorophyll dominates summer colour
It strongly reflects green wavelengths while supporting photosynthesis.
Chlorophyll declines in autumn
As it is dismantled, yellow and orange carotenoid pigments become more visible.
Some leaves produce anthocyanins
These pigments can add red and purple colours under certain conditions.
Weather affects the display
Temperature, light and moisture influence timing and pigment development.
This page explains scientific concepts for general learning. It does not replace laboratory safety procedures, professional engineering guidance, or individualized medical advice.