Vincetoxicum otophyllum, commonly known as Earleaf Swallowwort, is a perennial herb native to forest edges, grasslands, and open areas across East Asia, including China, Korea, and Japan. It typically grows to a height of 1-3 feet (0.3-0.9 meters) and features lanceolate leaves that give it its common name. The plant produces clusters of small, yellow or greenish-yellow flowers in the summer, which are not particularly showy but have a unique charm. The flowers develop into spindle-shaped seed pods that release silky-haired seeds, aiding in wind dispersal.

Earleaf Swallowwort is appreciated for its adaptability to various garden settings and is often used in border plantings or as a ground cover due to its spreading habit. It is relatively low-maintenance, thriving in both full sun and part shade. It prefers medium draining loam or clay soils. Gardeners should be cautious, as Vincetoxicum otophyllum can spread outside its native range, spreading through both seed and rhizomes, and should check local regulations before planting.CC BY-SA 4.0