Actinidia /ˌæktᵻˈnɪdiə/ is a genus of woody and, with a few exceptions, dioecious plants native to temperate eastern Asia, occurring throughout most of China, ******, Korea and Japan, and extending north to southeast Siberia and south into Indochina. The genus includes shrubs growing to 6 m (20 ft) tall, and vigorous, strong-growing vines, growing up to 30 m (98 ft) in tree canopies. They mostly tolerate temperatures down to around −15°C (5°F), and some are much hardier.