I've grafted a few other varieties onto my Hachiya. It's pretty easy, and might be a work-around solution for a tree that isn't producing. At any rate, it's fun to see the different types, and compare them. For example, these are Saijo (first season producing--I hope they're bigger next year). Saijo, Tamopan, and Matsumoto are all grafted onto the upper branches of my Hachiya, and are producing.
 

I have two Saijo trees one is larger than the other, the small Saijo tree had less fruit on it this year, but the fruit was larger than the ones on the larger Saijo tree...as you may know less fruit on a fruit tree usually gets larger fruit....some folks take the time to thin some of the fruit so the ones left on the tree get larger.

Carl
Louisiana
Zone 8B

Looking for Tamopan cuttings.

Carl

That is awesome, I never tried grafting anything yet. So much I need to learn, God willing, I have the time to learn and try it.

A couple of generous forum members gave me the opportunity to do some persimmon grafting. One shared scions from his various cultivars, and the other sent a dozen or so seedlings (for rootstocks) left over from his large-scale grafting project. Since the scions arrived before the rootstocks were ready for grafting, I top-worked the scions onto my mature Hachiya, simply as a place to store them. The following year, when the seedlings were ideal for grafting, I clipped new scions from the established grafts, and grafted several new trees for myself, friends and family. Most of the original grafts are still on the Hachiya and doing fine, although one variety (Eureka) didn't survive its second year. I did graft several of one type onto the tree, just as insurance.

Here's a post from back when I was first starting to graft, describing the steps I used:

http://figs4funforum.websitetoolbox.com/post/simple-stepbystep-grafting-5830743?

I am sure there are other methods that will work, but I found this approach to be quite reliable and easy. Here are the original instructions I learned from--they are better than the description I posted, and far more detailed. However, to see the photos you'll need to register with the Citrus Growers Forum:

http://citrus.forumup.org/about500-citrus.html

A couple of questions for growing persimmons in cool climates like zone 6;

Is there a list of cold hardy Persimmons that would survive to 0F/-18C or colder? 
Does the graft union need to be protected for the winter?
Thanks

Here Pino, this can explain:   http://homeguides.sfgate.com/cold-climate-persimmon-trees-30343.html

this gets more detailed about the varieties and zones:

https://www.garden.org/ediblelandscaping/?page=Edible-of-the-MonthPersimmon

not sure about the graft unions though

My Fuyu is over 15 years old and very productive.  My Saijo is 2 years old and growing very vigorously, but no fruit yet.  When I get some Saijo fruit (next year, I hope!), I ant to try the warm water method mentioned in this video:

I love to eat persimmons and i have planted about 10 trees, all my trees are astringent unknown variety with good taste and good sized fruits.

My tree with fruits from last year video.

Nice video, great looking fruit.... thank you for sharing....

Could you guys give me some insight on when pruning should begin?  I hear that you don't want to prune for while because you want a tall central leader but when should you begin if you want to harvest easily?

Love to see persimmons. Thanks for sharing! Need to check around to get a hold of some seedlings!