The Blue Pine (Pinus wallichiana) is a pine native to the Himalaya, Karakoram and Hindu Kush mountains, from eastern Afghanistan east across northern India to Yunnan in southwest China. It grows at high altitudes in mountain valleys at altitudes of 1800-4300 m (rarely as low as 1200 m), and is a tree from 30-50 m in height. It grows in a temperate climate with dry winters and wet summers. This pine is also called the Himalayan White Pine. It is also often known as 'Bhutan Pine', a name which can cause confusion with the more recently-described Pinus bhutanica, a closely related species. In the past, Blue Pine was also known by the invalid Latin names "Pinus griffithii" McClelland or "Pinus excelsa" Wall., and was also known as "Pinus chylla" Lodd. when the tree became available through the European nursery trade in 1836, nine years after Dr Wallich first introduced seeds to England. The leav

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