Citrus limon is an evergreen lemon tree with large dark green leaves and blooms with white flowers in spring, followed by lemons that grow all year round. The leaves are lance-shaped and grow up to about 8 cm (3 inches) long. New leaves are mostly purple at first. The flowers are white, up to 4 cm (1.5 inches) in size and give off a very pleasant fragrance. Color and shape of the fruits are well known in the trade.

The Citrus limon is not hardy.