Rumex stenophyllus, commonly known as narrow-leaf dock, is a perennial herb native to Eurasia, specifically thriving in moist meadows, riverbanks, and coastal areas where it can often be found in saline soils. It typically grows from a thick taproot and reaches heights of 1.3 to 3 feet (0.4 to 0.9 meters). The plant features narrow, lance-shaped leaves and produces small greenish or reddish-brown flowers from June to August, which are not particularly showy but are interesting for their whorled arrangement.

Narrow-leaf dock is valued for its resilience and adaptability to various moist environments. It is sometimes used in wildflower meadows or naturalized areas, especially in settings that mimic its native wetland conditions. In cultivation, it requires consistent moisture and can tolerate a range of soil types, including those with poor drainage. It prefers full sun to part shade. While not commonly used in formal garden settings, it can be an intriguing addition to a native plant garden or a restoration project. Gardeners should be cautious, as Rumex stenophyllus can become invasive outside its native range, spreading through its prolific seed production.CC BY-SA 4.0