Our trip to Tucson last week included driving through the Saguaro National Park.
Saguaros grow slowly. In the most favorable conditions it may take 35 years for a plant to reach 6 feet; more commonly it takes 47-67 years.
Petroglyphs more than 800 years old were located on one of the trails in the western park.
Saguaros are protect by law throughout Arizona.
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