Even though Arches National Park is a desert, there are almost 500 different plant species that live here. The conditions can be harsh with only four to thirteen inches (ten to thirty-three centimeters) of precipitation a year. The temperatures can range from -1 degree Fahrenheit (-18 degrees Celsius) to 116 degrees Fahrenheit (47 degrees Celsius). Plants have adapted to these conditions in a variety of ways.
These adaptations are grouped in three categories: drought escapers, drought resistors and drought evaders.