North Carolina produces the majority of Fraser fir Christmas trees. At higher altitudes, deciduous forests give way to coniferous trees like Fraser fir. The Fraser fir is an endangered species. The county's agricultural focus is the mass production of Fraser Fir Christmas Trees. It is dominated by red spruce and Fraser fir, and coats the elevations above . Red spruce and Fraser fir are dominant canopy trees in high mountain areas. Dead Fraser fir blowdowns and low visibility complicate navigation from any direction. The mountain is predominantly covered by Fraser Fir farms, a popular choice of Christmas Tree. In the United States, Douglas-fir, Scots pine and Fraser fir all sell well. Fraser fir rarely occurs below , and becomes the dominant tree type at . A Fraser fir or Balsam fir is erected in the rotunda and decorated. Red spruce ("Picea rubens") and Fraser fir ("Abies fraseri") dominate the forest canopy. In 2009, Apple placed two Fraser fir trees in every one of its retail establishments.