Sisymbrium murale, commonly known as Annual Wall-Rocket, is an annual herb native to a wide range of habitats including disturbed soils, waste places, roadsides, and fields across Europe, Asia, and Africa. It has naturalized in many parts of the world, including North America. The plant typically grows up to 23.6 inches (60 cm) tall and features lobed leaves that form a basal rosette. Its small, bright yellow flowers bloom prolifically from spring to early fall, depending on the region, with a peak flowering period in May to September in the UK and April to August in China. The flowers are not particularly showy but are noticeable due to their abundance.

Annual Wall-Rocket is valued for its rapid growth and adaptability to poor soils, making it a useful plant for covering bare ground quickly. It is also used in wildflower mixes for urban and disturbed sites. In cultivation, it prefers full sun to part shade and tolerates a range of soil types, though it thrives in well-drained soils. It requires minimal water once established. While it is not commonly used for culinary or medicinal purposes, it is related to other mustard species that are. Gardeners should be cautious, as Sisymbrium murale can become invasive outside its native range, outcompeting native vegetation and altering ecosystems. It is important to manage its spread to prevent potential ecological issues.CC BY-SA 4.0