Cactuses, a member of the Cactaceae family with 1750 different species, are known to be one of the most resilient plants that can easily outlive humans. Two of the longest-living species are the Saguaro, at 200 years, and the Mexican Giant Cardon, at 300 years. The Saguaro can reach up to 60 feet and weigh anything from 3200 to 4800 pounds when fully hydrated. Meanwhile, the tallest Cardon recorded in the Guinness World Records was 63 feet.