Diospyros virginiana In respect to the power of making heartwood, the persimmon rarely develops any heartwood until it is nearly one hundred years old. This heartwood is extremely close-grained and almost black, resembling ebony (of which it is a true variety). It is a common misconception persimmon fruit needs frost to ripen and soften, called bletting. Some, such as the early-ripening varieties "pieper" and "NC21"(also known as "supersweet"), easily lose astringency and become completely free of it when slightly soft at the touch—these are then very sweet, even in the British climate. On the other hand, some varieties (like the very large
Diospyros celebica wood in fingerboards for guitars and other related instruments. The tree grows up to high under favourable circumstances, although such trees are rarely seen nowadays. Since Makassar ebony has been a woodworkers' favourite for centuries, most of it has been felled and used in high-quality furniture. The wood is often defective, showing cracks, and in particular heart shakes and splits. It is not easy to dry and is best given ample time for this. Converting logs into boards as soon as possible is recommended. Diospyros celebica Diospyros celebica (commonly known as black ebony or Makassar ebony) is a species of