Cited from en.wikipedia.org:
Flowers appear early in spring, before the leaves are fully expandedDue to their relatively high price and the large
size of the fruit of cultivars, the pears tend to be served to guests or given as gifts, or eaten together in a family setting.
In cooking, ground pears are used in vinegar- or soy sauce-based sauces as a sweetener, instead of sugar.
They are also used when marinating meat, especially beef.
In Australia, these pears have been commercially produced for more than 25 years.
In China, the trees are popular, and are referred to in a number of sayings.
In Japan, fruit is harvested in Chiba, Ibaraki, Tottori, Fukushima, Tochigi, Nagano, Niigata, Saitama and other prefectures,
except Okinawa. Nashi (ja:梨) may be used as a late Autumn kigo, or “season word”, when writing haiku. Nashi no hana
(ja:梨の花, pear flower) is also used as a kigo of spring. At least one city (Kamagaya-Shi, Chiba Prefecture)
has the flowers of this tree as an official city flower.
In Korea, the fruit is grown and consumed in great quantity. In the South Korean city of Naju,
there is a museum called The Naju Pear Museum and Pear Orchard for Tourists (나주 배 박물관 및 배밭 관광체험).
In Nepal and the Himalayan states of India, they are called nashpati and are cultivated as a cash crop in the Middle Hills between
about 1,500 and 2,500 meters’ elevation where the climate is suitable. The fruit are carried to nearby markets by human porters or,
increasingly, by truck, but not for long distances because they bruise easily.
In Taiwan, pears harvested in Japan have become luxurious presents since 1997 and their consumption has jumped.
In Cyprus, the pears were introduced in 2010 after initially being investigated as a new fruit crop for the island in the early 1990s.
They are currently grown in Kyperounta.
 CultivarsCultivars are classified in two groups. Most of the cultivars belong to the Akanashi ('red pears') group,
and have brownish-yellow rinds. The Aonashi ('green pears') have yellow-green rinds.
Important cultivars include:
'Chojuro' (ja:長十郎, Japan, 1893?)
'Kosui' (ja:幸水, Japan, 1959; the most important cultivar in Japan),
'Hosui' (ja:豊水, Japan, 1972)
'Imamuraaki' (ja:今村秋, Japan, native)
'Nijisseiki' (ja:二十世紀, Japan, 1898; name means "20th century", also spelled 'Nijusseiki')
'Niitaka' (ja:新高, Japan, 1927)
'Okusankichi' (ja:晩三吉, Japan, native)
'Shinko' (ja:新興, Japan, 1941)
'Whangkeum' (ko:황금, zh:黄金, Korea, 1984, 'Niitaka' x 'Nijisseiki')