Q.cutting arms of a mature saguaro
I have a mature saguaro that has a large arm damaging the roof of my home. Is it permitted to cut the 1 arm off and will it permanently harm the plant? I own the property and the cactus has been here since I took ownership. I don’t want to do anything wrong or damage the plant.
Do to the protected nature of the Saguaro Cactus, I would encourage you to contact a professional.
The size and age of your plant may have special considerations for pruning.
Saguaro Cactus are one of the few cactus that will not root from cuttings, so replanting the pruned arm is not possible.
https://www.gardeningknowhow.com/ornamental/cacti-succulents/saguaro/saguaro-cactus-care.htm