Greenness of the leaves are caused by the Chlorophyll amount of the leaves. In summer it gets more sunlight, so it requires more chlorophyll which can do photosysnthesis and produce energy. read more
During the spring and summer the leaves have served as factories where most of the foods necessary for the tree's growth are manufactured. This food-making process takes place in the leaf in numerous cells containing chlorophyll, which gives the leaf its green color. read more
Plants do have a colour pigment in them i.e.chlorophyll and due to that colour pigment plants or leaves reflect green colour. Chlorophyll has different types- There are several different types of chlorophyll including chlorophyll a, chlorophyll b, chlorophyll c, chlorophyll d, chlorophyll e and bacterio-chlorophyll. read more
The pigment that causes leaves to be green is chlorophyll. Chlorophyll is important for plants to make food using sunlight. During spring and summer when there is plenty of sunlight, plants make a lot of chlorophyll. read more