Diplotaxis tenuifolia, commonly known as Perennial Wall-Rocket, is a glabrous perennial herb that is native to the Mediterranean region, including Europe and western Asia, and has become naturalized in many temperate regions worldwide. It can grow up to 4 feet tall and is characterized by its deeply pinnate leaves and bright yellow, four-petaled flowers that bloom from late spring to early autumn, adding a splash of color to the garden. The flowers are moderately showy and attract pollinators such as bees and butterflies.

Perennial Wall-Rocket is valued for its ease of maintenance and its ability to thrive in disturbed areas, making it a suitable choice for urban gardens, borders, and as a ground cover in full sun environments. It prefers moderately damp, slightly alkaline soils but is adaptable to a range of soil conditions, provided they are well-drained. While it is drought-tolerant once established, regular watering will promote more vigorous growth. Gardeners should be cautious, as Diplotaxis tenuifolia can be potentially invasive outside its native range due to its prolific self-seeding habit. It is also used as a culinary herb, particularly in salads for its peppery flavor, and has been used traditionally in herbal medicine.CC BY-SA 4.0