In Japan, persimmon trees are pruned in late autumn, but one fruit is left hanging in every tree. This is a very old custom. We say this persimmon is a charm for the next good harvest. It looks somewhat lonely, but gives a sharp accent in chill air against the blue sky, providing a clear signal that winter is on its way. It is said that there is a scientific reason for this tradition. In ancient times, Japanese people had to pick fruits or nuts by hand. They could expect more persimmon fruits by giving the last one to birds, which would eat it and drop the seeds here and there.