Bamboo is one of the fastest-growing plants on Earth, with reported growth rates of 100?cm (39?in) in 24 hours.?However, the growth rate is dependent on local soil and climatic conditions, as well as species, and a more typical growth rate for many commonly cultivated bamboos in temperate climates is in the range of 3?10 centimetres (1.2?3.9?in) per day during the growing period. Primarily growing in regions of warmer climates during the late?Cretaceous period, vast fields existed in what is now Asia. Some of the largest timber bamboo can grow over 30?m (98?ft) tall, and be as large as 15?20?cm (5.9?7.9?in) in diameter. However, the size range for mature bamboo is species dependent, with the smallest bamboos reaching only several inches high at maturity. A typical height range that would cover many of the common bamboos grown in the United States is 15?40 feet (4.6?12?m), depending on species.