The growth rate of this cactus is strongly dependent on precipitation; saguaros in drier western Arizona grow only half as fast as those in and around Tucson. Saguaros grow slowly from seed, and may be only 6. 4 mm (1⁄4 in) tall after two years. Cuttings rarely root, and when they do, they do not go through the juvenile growth phase, which gives a different appearance. Since 2014,[update] the National Register of Champion Trees listed the largest known living saguaro in the United States in Maricopa County, Arizona, measuring 13. 8 m (45 ft 3 in) high with a girth of 3. 1 m (10 ft 2 in); it has an estimated age of 200 years and survived damage in the 2005 Cave Creek Complex Fire. The tallest saguaro ever measured was an armless specimen found near Cave Creek, Arizona. It was 78 ft (23. 8 m) in height before it was toppled in 1986 by a windstorm. Saguaros are stem succulents and can hold large amounts of water; when rain is plentiful and the saguaro is fully hydrated, it can weigh between 1,500 and 2,200 kg (3,200 and 4,800 lb).

Saguaro cactus coloring page, Pearson explains that the therapeutic effect can be further understood by considering that the image you are coloring replaces any negative ones you may be harboring.