Kiwifruit, kiwi, Radix Actinidiae Argutae, Yangtao Actinidia Root

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China

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Kiwifruit,kiwi,Radix Actinidiae Argutae,Yangtao Actinidia Root
KIWIFRUIT
Actinidia deliciosa
Actinidiaceae
Common Names:Kiwifruit,kiwi,Chinese gooseberry,Yang-tao.
Related species:Hardy Kiwi(Actinidia arguta,A.kolomikta),Chinese Egg Gooseberry (A.coriacea).Red Kiwi(A. melanandra), Silver Vine (A.polygama).Purple Kiwi (A. purpurea).
Origin:The kiwifruit is native to the Yangtze River valley of northern China and Zhejiang Province on the coast of eastern China.The first seeds were brought out of China by missionaries to New Zealand at the turn of this century.Early nurserymen in New Zealand,such as Alexander Allison,Bruno Just,and Hayward Wright, recognized the potential of the fruit and it soon became a popular backyard vine.Several plants were sent to the Chico Plant Introduction Station in California and exist to this date.In addition to New Zealand and California,kiwifruit is also grown commercially in such areas as Italy,South Africa and Chile.
Adaptation:The plants need a long growing season (at least 240 frost-free days) which will not be hampered by late winter or early autumn freezes.When fully dormant they can withstand temperatures to about 10¡ã F (and perhaps a bit lower).However they must acclimate to cold slowly and any sudden plunge in temperature may cause trunk splitting and subsequent damage to the vine.Late winter freezing temperatures will kill any exposed buds which limits the adaptable growing areas of kiwifruit.In California the kiwifruit is an appropriate crop wherever citrus fruits,peaches and almonds are successful.All cultivars need a certain period of winter chilling and their needs vary dramatically,dependent upon cultivar.The most popular cultivar,Hayward,does best with a winter rest of 800 hours of chilling (defined as total hours between 32¡ã and 45¡ã F) For warm winter areas with low chill hours (such as southern California, southern Texas, and Florida),cultivars such as Elmwood, Dexter,Abbott,or Vincent would be more suitable.In very mild winter areas the vines may retain their leaves and fail to flower the following season.Kiwi vines can be successfully grown in large containers.

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