My mother's persimmon tree is producing fruit that tastes good, but the area at the top beneath the leaves (the hull/calyx) is black. The local nursery suggested the fruit may be getting too much sunlight, but even fruits that have grown under the shade of other leaves have the same condition.
The leaves don't sit right on the fruit, like the persimmons we see in the store. Instead, there is a little bit of a gap between the fruit and those leaves.
Any ideas what may be causing this condition, and how we can prevent it next year?