page_title: Christmas tree
section_title: Environmental issues
hierarchical_section_title: Christmas tree / Environmental issues
caption_attribution_description: English: Discarded Christmas trees waiting curbside for pickup by the City of Los Angeles for conversion to mulch
context_page_description: A Christmas tree is a decorated tree, usually an evergreen conifer, such as a spruce, pine or fir, or an artificial tree of similar appearance, associated with the celebration of Christmas, originating in Northern Europe. The custom was developed in medieval Livonia, and in early modern Germany where Protestant Germans brought decorated trees into their homes. It acquired popularity beyond the Lutheran areas of Germany and the Baltic countries during the second half of the 19th century, at first among the upper classes. The Catholic Church had long resisted this Protestant custom and the Christmas Tree stood for the first time in Vatican in 1982.
  The tree was traditionally decorated with "roses made of colored paper, apples, wafers, tinsel, [and] sweetmeats". In the 18th century, it began to be illuminated by candles, which were ultimately replaced by Christmas lights after the advent of electrification. Today, there is a wide variety of traditional and modern ornaments, such as garlands, baubles, tinsel, and candy canes. An angel or star might be placed at the top of the tree to represent the Angel Gabriel or the Star of Bethlehem, respectively, from the Nativity.
context_section_description: The debate about the environmental impact of artificial trees is ongoing. Generally, natural tree growers contend that artificial trees are more environmentally harmful than their natural counterparts. However, trade groups such as the American Christmas Tree Association, continue to refute that artificial trees are more harmful to the environment, and maintain that the PVC used in Christmas trees has excellent recyclable properties.
  Live trees are typically grown as a crop and replanted in rotation after cutting, often providing suitable habitat for wildlife. Alternately, live trees can be donated to livestock farmers who find that such trees uncontaminated by chemical additives are excellent fodder. In some cases management of Christmas tree crops can result in poor habitat since it sometimes involves heavy input of pesticides.
  Concerns have been raised about people cutting down old and rare conifers, such as the Keteleeria evelyniana and Abies fraseri, for Christmas trees.
  Real or cut trees are used only for a short time, but can be recycled and used as mulch, wildlife habitat, or used to prevent erosion. Real trees are carbon-neutral, they emit no more carbon dioxide by being cut down and disposed of than they absorb while growing. However, emissions can occur from farming activities and transportation. An independent life-cycle assessment study, conducted by a firm of experts in sustainable development, states that a natural tree will generate 3.1 kg (6.8 lb) of greenhouse gases every year (based on purchasing 5 km (3.1 miles) from home) whereas the artificial tree will produce 48.3 kg (106 lb) over its lifetime. Some people use living Christmas or potted trees for several seasons, providing a longer life cycle for each tree. Living Christmas trees can be purchased or rented from local market growers. Rentals are picked up after the holidays, while purchased trees can be planted by the owner after use or donated to local tree adoption or urban reforestation services. Smaller and younger trees may be replanted after each season, with the following year running up to the next Christmas allowing the tree to carry out further growth.
  Most artificial trees are made of recycled PVC rigid sheets using tin stabilizer in the recent years. In the past, lead was often used as a stabilizer in PVC, but is now banned by Chinese laws.
  The use of lead stabilizer in Chinese imported trees has been an issue of concern among politicians and scientists over recent years. A 2004 study found that while in general artificial trees pose little health risk from lead contamination, there do exist "worst-case scenarios" where major health risks to young children exist. A 2008 United States Environmental Protection Agency report found that as the PVC in artificial Christmas trees aged it began to degrade. The report determined that of the fifty million artificial trees in the United States approximately twenty million were nine or more years old, the point where dangerous lead contamination levels are reached. A professional study on the life-cycle assessment of both real and artificial Christmas trees revealed that one must use an artificial Christmas tree at least twenty years to leave an environmental footprint as small as the natural Christmas tree.
caption: Discarded trees curbside in North Hollywood, Los Angeles
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