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Christmas tree cultivation is an agricultural, forestry, and horticultural occupation which involves growing pine, spruce, and fir trees specifically for use as Christmas trees. The first Christmas tree farm was established in 1901, but most consumers continued to obtain their trees from forests until the 1930s and 1940s. Christmas tree farming was once seen only as a viable alternative for low-quality farmland, but that perception has changed within the agriculture industry. For optimum yield and quality, land should be flat or gently rolling and relatively free of debris and undergrowth. A wide variety of pine and fir species are grown as Christmas trees, although a handful of varieties stand out in popularity. In the United States, Douglas-fir, Scots pine and Fraser fir all sell well. Nordmann fir and Norway spruce sell well in the United Kingdom, the latter being popular throughout Europe. Like all conifers, Christmas trees are vulnerable to a range of pests. The final stage of cultivation, harvesting, is carried out in a number of ways; one of the more popular methods is the pick-your-own tree farm, where customers are allowed to roam the farm, select their tree, and cut it down themselves. Other farmers cultivate potted trees, with balled roots, which can be replanted after Christmas and used again the following year == History == The practice of cultivating evergreens specifically to sell as Christmas trees dates back to 1901, when a 25,000 tree Norway spruce farm was sown near Trenton, New Jersey.〔Faber Harold. (Off to the farm for a Christmas tree ), ((ProQuest )), ''The New York Times'', December 2, 1990, p. 17. Retrieved September 5, 2007. 〕 The commercial market for Christmas trees had started fifty years earlier when a farmer from the Catskill Mountains brought trees into New York City to sell.〔Summers, Will. (From Seed to Santa – A Tale of a Christmas Tree ), ''Oregon Employment Department'', November 28, 2005.〕 Despite these pioneering efforts, most people still obtained wild-grown Christmas trees from forests into the 1930s and 1940s.〔 More trees were grown in plantations after World War II, and by the 1950s farmers were shearing and pruning trees to meet customer demands. The Christmas tree market burgeoned through the 1960s and 1970s, but from the late 1980s onward prices and the market for natural Christmas trees declined. In the early 21st century, nearly 98 percent of all natural (non-artificial) Christmas trees sold worldwide were grown on tree farms.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Christmas tree cultivation」の詳細全文を読む スポンサード リンク
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