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
Hybrid wood extrusion of a correctly assayed compound and application through extrusion at high temperature of a layered adhesive. This "fusion" of such different materials – composite wood and aluminum – is made possible by the thin adhesive layered sandwiched between outer skin and central core. This breakthrough allows today to market easy to install products with the look and feel of exotic wood and perfectly durable without maintenance. For new buildings as well as for renovations, hybrid wood profiles are perfectly suitable for cladding, siding, screen wall, windbreak, fence, pergola, trims, louvers and railings. Hybrid wood Hybrid wood or wood hybrid