Zanthoxylum ailanthoides, commonly known as ailanthus-like prickly ash, is a deciduous tree native to various habitats including mixed forests, forest margins, and valleys in southeastern China, Taiwan, Southeast Asia, and Japan. It typically grows to a height of 5-10 meters with a similar spread, featuring a rounded crown and pinnately compound leaves that give a feathery appearance. The tree is notable for its aromatic bark and foliage, and it produces small, inconspicuous yellow-green flowers in spring, followed by reddish-brown fruit clusters that resemble peppercorns.

Ailanthus-like prickly ash is valued for its culinary uses, as its fruit is used as a pepper substitute and young leaves are incorporated into Taiwanese cuisine. It is also used in traditional medicine. In cultivation, it prefers full sun to part shade, well-drained soils, and moderate water. It can be used in ornamental plantings, particularly in Asian-themed gardens, and as a spice plant. However, gardeners should be aware of its potential invasiveness when grown outside its native range and check local regulations before planting. The plant may also have thorns, which should be considered when choosing a planting location.CC BY-SA 4.0