Leaf_flushing
Leaf flushing or leaf out is the production of a flush of new leaves typically produced simultaneously on all branches of a bare plant or tree. Young leaves often have less chlorophyll and the leaf flush may be white or red, the latter due to presence of pigments, particularly anthocyanins.[1] Leaf flushing succeeds leaf fall, and is delayed by winter in the temperate zone or by extreme dryness in the tropics. Leaf fall and leaf flushing in tropical deciduous forests can overlap in some species, called leaf-exchanging species, producing new leaves during the same period when old leaves are shed or almost immediately after.[2][3] Leaf-flushing may be synchronized among trees of a single species or even across species in an area.[4] In the seasonal tropics, leaf flushing phenology may be influenced by herbivory and water stress.[5][6]