Q.Saguaro cactus
Saguaro cactus grown in a garden pot for approx. 25 yrs. Provides white blooms yearly. Seems healthy. Now it has a round red bulb growing on its side which is a new development. It does not resemble a bloom. Any suggestions as to what this could be? I cannot put a picture on the internet to display the cactus. It is a lovely plant and I would like to repot it into a larger container. It is probably close to 10 ft. tall.
Certified GKH Gardening Expert
This sounds like the bloom was pollinated. This will lead to a red fruit, where the seeds will be located. There is nothing that needs to be done, as this is part of the natural life cycle.
Here is more information on the care of the cactus: https://www.gardeningknowhow.com/ornamental/cacti-succulents/saguaro/saguaro-cactus-care.htm
