This article examines the life of leaves in all its botanical diversity, and through all their artistic seizures. Through chlorophyll photosynthesis, to which they owe their green color, leaves are naturally linked to the atmosphere they oxygenate and the light they seek. The life of deciduous leaves is punctuated by their unfolding from a bud, their quivering in the wind and their fall in winter.
We will discuss the climatic conditions of the appearance of leaves, the biological stages of their evolution, their seasonal and adaptive transformations. They will also be considered as sources of inspiration: poets celebrate them in connection with their states of mind, and artists reveal their formal beauty or sensitivity, use some of their capacities and care for them as vulnerable living beings.