When you pick leaves from a tree, why do they lose all their moisture?
Certified GKH Gardening Expert
Leaves are continually releasing moisture. They actually breath, a little like animals. And just like our breath contains moisture, so does theirs.
When a leaf is removed from a plant, the vascular system of the plant is no longer able to replenish the water the leave is naturally releasing. This is also combined with the evaporation, and eventually the leaf dries out.