Lycium shawii, commonly known as desert thorn or Arabian boxthorn, is a thorny shrub native to arid and semi-arid regions, including the Arabian Peninsula and parts of Africa. It is well-adapted to hot, dry climates, often found in gravel plains, foothills up to 1200 meters (3937 feet), and wadis, where it contributes to the stability of these ecosystems. Desert thorn can grow up to 3 meters (10 feet) in height and is characterized by its spiny branches, which provide a defense mechanism against herbivory.

The plant produces small, tubular flowers that are whitish-pink or purple, typically blooming from October to April, depending on the local climate. The flowers are followed by red, pea-sized berries that are both edible and ornamental. These berries are a source of food for wildlife and are also used in traditional medicine for their laxative properties. In cultivation, Lycium shawii is valued for its drought tolerance and is used in xeriscaping, as well as for erosion control due to its extensive root system. It requires minimal water once established, prefers well-drained soils, and thrives in full sun. While it is not commonly found in ornamental horticulture, it can be used as a barrier plant or in naturalistic plantings where its thorny nature is beneficial. Care should be taken as the spines can be a hazard, and the plant may spread if conditions are favorable, potentially becoming weedy outside its native range.CC BY-SA 4.0