Actinidia /ˌæktᵻˈnɪdiə/ is a genus of woody and, with a few exceptions, dioecious plants native to temperate eastern Asia, occurring throughout most of China, Taiwan, 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.