The elevation at which trees can no longer grow, also known as treeline or timberline, is different in various places around the world. For instance, the timberline is at 10,000 feet in many parts of the western United States and as low as 4,500 in eastern states like New Hampshire.
Some places in Mexico have a treeline as high as 13,000 feet, while the line is only 5,500 feet in most areas near the Sonoran Desert in Mexico. There are a number of different factors that determine the timberline of a specific area, including temperature, precipitation level and soil composition.
