I just replaced all my cactus soil and now I have a ton of white mold growing all in the pots especially the one that had several cacti in it. Two of my cacti rotted and I've cut off the infected part in hopes I can maybe save them. The others I pulled out and they had mold on the roots but I wiped them with peroxide, dabbed them dry and I'm going to let them air dry. Now I'm thinking I should probably take out all my cacti out of their pots to let them air dry as there could be mold that I can't see under the soil. Why is this happening? Is it because the soil was still damp when I put the cacti in?? I've done that before and had no problems. I was dealing with some sort of fungal issue already that's why I did the soil change. Should I get fungicide?? This is getting really bad as I don't want all my cacti to die especially the baby barrels. I have oxalis that I'm trying to grow too and I don't want the mold to get to them either. What do I do???
