How Can You Tell The Age Of A Saguaro Cactus?
How Can You Tell The Age Of A Saguaro Cactus? For columnar type of cacti, the number of thorny “arms” branching off the main stem can also indicate the age of the cactus. For example, a Saguaro that begins to grow arms is at least 70 years old. A Saguaro with one fully grown arm