The most popular type of Christmas tree is the Douglas fir, which is native to the Pacific Northwest region of North America. It has long, sturdy branches and dark green needles that make it ideal for holding ornaments. Another popular type of Christmas tree is the Norway spruce, which is native to Europe and has a pyramid-shaped silhouette with soft, dark green needles. The Colorado blue spruce, native to the Rocky Mountains, is also a popular choice for its dense, bluish-green needles and symmetrical shape.