Lemon leaves are composed of leaf body, petiole and wing, which are called single compound leaves. The shape and size of leaves are slightly different according to different varieties and seasons.

According to the observation of Eureka lemon, its leaves are oval, the tip of the leaf is gradually pointed, the leaf base is narrow and wedge-shaped, the leaf margin is shallow and serrated, and the veins on the back of the leaves are slightly obvious.

The wing leaves are not obvious and linear. The tender leaves are purplish red, gradually yellow-green, and late dark green. The leaf area is the smallest in spring and the largest in summer. < P > The leaf size has a great relationship with soil fertility and water sufficiency. There are many pores on the surface of leaves, especially on the back of leaves.

Leaflets of lemon are linear or obovate, tender leaves are yellow-green, and mature leaves are dark green.