Saguaro cacti (IMAGE) Ecological Society of America Caption Photographing the top of a saguaro using an extendable flagpole with a camera mounted on top and connected wirelessly to a tablet (A and B). Photograph of saguaro crown with compass superimposed, used to determine the ordinal direction of buds and flowers (C). Credit National Park Service Usage Restrictions Credit must be given to the creator. License CC BY Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.