According to Wikipedia, Saguaro cacti "can grow to be over 12 meters (40 feet) tall". So, a real old and real huge Saguaro can be bigger than your average house

According to Wikipedia, Saguaro cacti "can grow to be over 12 meters (40 feet) tall". So, a real old and real huge Saguaro can be bigger than your average house (or palm tree): https://en.wikipedia.org/wiki/Saguaro#/media/File:Saguaro_with_many_arms.jpg https://en.wikipedia.org/wiki/Saguaro#/media/File:Saguaro_wi.... But I would say 99% of them aren't...