badatusernames
Omono
My advice was for shogun's specific weak tree, to not touch it all this year until it is back on its feet. If your tree is humming along do whatever you want.
In general, you can prune anytime you want and these trees are very good at back budding everywhere. Flower buds start forming in September on previous year's growth, so if you are trying to show a tree you can wait and prune later in the year and you can actually tell if there is a flower bud or a leaf bud. Usually the flowers are out on the ends of branches. If you are building a tree then just ignore the fruit factor.
The sand is from previous ownernot me. I have mine in 100% pumice. If it is in a bonsai pot then I have it in 50/50 akadama pumice. I don't think the soil is a huge factor.
The best analogy for princess persimmons is they are like a train on rails. If you are on the rails then it will grow like crazy and you can treat them however you want. But if you fall off the rails it is a real train wreck and takes 2-3 years to get it back on the rails. Careful weaning and protection etc.
Thank you! Good to know.