Lemon trees generally grow to about 6m (20ft), but can reach 10m (33ft). The branches are thorny and the leaves are shiny green, while the flowers are white on the outside with a violet streaked interior. The flowers have a strong fragrance. As the flower petals fall away, a small green nub is left behind, which matures in the fruit. The lemon fruit when ripe are bright yellow, oval shaped with a pointed tip. There is a layer of pith under the skin and a paler yellow segmented interior. The fruits also contain seeds.
Lemon trees can be propagated by means of grafting. Lemon trees thrive in warm or semi-arid climates.