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 squarrosa Diospyros squarrosa Diospyros squarrosa, the rigid star-berry, is a dioecious, deciduous shrub or small tree that is native to the tropical and subtropical Afrotropics. Its wood and edible, fleshy fruit are harvested locally. The bark is grey to brown, and smooth with shallow longitudinal fissures. It grows from 2 to 10 metres tall, and may start flowering while still small. They produce flowers from early to midsummer, which are greenish to creamy-white and fragrant. The flowers are axillary, in lax cymes in males plants, and solitary in female plants. The near-spherical fruit (of female plants) are some 2 cm in