Saguaros have a relatively long lifespan, often exceeding 150 years. They may grow their first side arm any time from 75–100 years of age, but some never grow any arms. A saguaro without arms is called a spear. Arms are developed to increase the plant's reproductive capacity, as more apices lead to more flowers and fruit.
A saguaro is able to absorb and store considerable amounts of rainwater, visibly expanding in the process, while slowly using the stored water as needed. This characteristic enables the saguaro to survive during periods of drought.
JW. .Org article https://www.jw.org/en/publications/magazines/g200908/Watching-the-World/#?insight%5Bsearch_id%5D=67e5f1f7-ff0b-4b60-b777-409457bd2da8&insight%5Bsearch_result_index%5D=0Bus Schedule: insert link here
Photo credits: Janea McDonald
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