MorphologyRead full entry
DescriptionMore info for the terms: cacti, stem succulent
Saguaro is a native, arborescent, stem succulent that grows from 9.8 to 52.5 feet (3-16 m) tall and 5.9 to 29.5 inches (5-75 cm) in diameter [6,10,64,65]. It is the largest of the columnar cacti growing in the United States . Saguaro has a deep anchoring taproot (up to 3.2 feet [1 m] deep) and extensive lateral roots (13 to 98 feet [4-30 m] long) [14,65]. The stems are simple with one to five (rarely up to 49) lateral, erect branches [6,10]. Saguaro trunks have many prominent ribs, armed with dense, stout spines that are up to 2.8 inches (7 cm) long [6,10,32]. Flowers are 3.4 to 4.9 inches (8.7-12.5 cm) long and occur at the ends of branches [6,32,45]. Fruits are oblong and contain up to 2,500 seeds [1,10].