Answer: The pollination needs of the jujube are not clearly defined, but appear to be done by ants or other insects and possibly by the wind. Most jujube cultivars produce fruit without cross-pollination so I don't think that's the problem with yours. They do require a winter chill in order to develop fruit so that might be a contributing factor, but I suspect that your jujube tree is just too immature to produce mature fruit. As long as it looks otherwise healthy you may simply need to be a little more patient with your jujube. Wish I had more suggestions!
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