The Zima Khurma Persimmon tree, bred out of Nikitskaya Bordovaya, is extremely cold hardy and a good producer of medium to large size fruit that ripens late-season. This particular specimen has been tested to survive temperatures down to negative sixteen degrees Fahrenheit.  This cultivar was bred in Japan and brought to America. The Zima Khurma Persimmon tree is a astringent persimmon. [rootstock - Diospyros virginiana] (USDA Zones 5-8)