Assuming you are referring to Diospyros nigra, the black sapote, sometimes called chocolate sapote. I have two small trees that have flowered, but never held fruit. Has not been a problem with colder temps. Seeds came from Mexico where fruit was more like axle grease than chocolate. Blended with other fruit or sugar would help. Still, an attractive tree in the persimmon family.
They made flowers but no fruit ,because they are both male or both female trees.These are dioecious trees most likely ,but sometimes they can make one year female flowers then 2 years after they make male flowers and sometimes.they can make.both types of flowers in the same year.
Texas persimmon is a lot better than black sapote and the asian persimmon pollination variant , ,,chocolate,, its an interesting tree.
Ah, learn something new today. My black sapote (in a big trash container) had about 18 flowers a couple months ago, all dropped. So you're saying I'll just have to wait for that one special year where both male and female flowers are produced at the same time?
Not all the trees ( of D Nigra) can make male and female flowers.Those are rare and usually they make male or female flowers all their life.
You need 2 trees for polination ,male and female.Or you could graft a male branch on a female tree and vice versa.
Also,there might be allready self fertile cultivars that have both type of flowers ,for sale and if you have a single female tree ,then a self fertile cultivar will polinate it.
Sometimes ,a persimmon tree from a closely related specie could pollinate them and make them set fruit and if you plant those seeds then you will get verry interesting hibrids that could be more.cold hardy or taste better/ have bigger fruit,etc.D. virginiana X D. Kaki hibrids Rosseyanka,Nikitas gift are allready famous hibrids.Similar hibrids can be obtained with D Nigra also.