Rough potato

Rough potato, scientifically known as Metaplexis japonica, is a member of the Asclepiadaceae family and can grow up to 8 meters tall in its native regions including Amur, China North-Central, South-Central, Southeast, Inner Mongolia, Japan, Khabarovsk, Korea, Kuril Islands, Manchuria, Primorye, Qinghai, and Tibet. This plant thrives in moist environments with light or partial sun exposure, adapting to various soil types such as light (sandy), medium, and heavy (clay). The rough potato is notable for its edible fruit, leaves, and roots, which are used for culinary purposes. Its native range spans across eastern Asia, highlighting its significance in local ecosystems and traditional uses. In cultivation, the rough potato requires moist soil and can be grown in full sun to partial shade. It has been introduced into Iowa, making it adaptable beyond its natural habitat. The plant's edible parts—fruit, leaves, and roots—are prepared by boiling before consumption or eaten raw. Roots may also be dried for later use. While not traditionally used medicinally, the rough potato remains an important part of local flora and culinary traditions in its native regions.