I am really amazed that Harry is blooming again. After the glorious blooming time last April, I thought he was through for the year. But, since we have had lots of rain here, more humidity and cooler temps (if you call low 100's cooler!), he must have decided he could bloom again. Harry is also larger in circumference. Saguaros soak up water and expand in order to get themselves through the next dry spell. I don't water Harry. He gets what nature gives him.
4 hours ago