North American Fruit Explorers mailing list at ibiblio

[Richard Moyer <ramoyer@gmail.com>]

Henry,
Hidden Springs Nursery sells Norris #1, which is from the Norris Dam
planting in East TN.  A small, tooth-shaped form, very sweet, very heavy
bearing in the S. Appalachians.  Tolerant of hot, dry conditions (for us),
intolerant of afternoon shade.

See this link:
http://www.hiddenspringsnursery.com/plants.php#jujube

Note from the picture at the link, the fruit in that bowl is of the "Li" or
"Lang" shape, how many of them are not brown, or just a bit.  In parts of
India and Vietnam, this is how the fruit is preferred, as I've been told.
Whereas during my time in Korea, and talking with Chinese coworkers, the
fully brown-shriveled form is most commonly consumed.  Again, if faced with
a hard freeze, the fruit can be picked and enjoyed at this 'green' stage,
where the color has just started to turn.

P.S.  Remember there are books with info, such as an "Uncommon Fruits"
chapter by Lee Reich on jujubes, and a book by Roger Meyer and ? Ashton
devoted to jujubes.  Undoubtedly there are other sources of info on US
culture of jujubes.  Don't give up on these, if you happen to have a
cultivar which blooms but does not set fruit for you...