Just moved to Arizona and bought a house. I’m trying to find out what is wrong with the cacti in my new backyard. They appear di
seased, sunburned or frost bitten. Can they be saved? When we looked at the house about a month ago, the cacti did not appear in this condition. I thought they looked healthy and beautiful. I am new to the desert, so I am not sure of the proper care for cacti but I am ready to learn. Please let me know if/how these cacti can be saved. If not, please let me know how to trim or discard of them.
This looks like it is a case of phythium rot. This article has more information.