I noticed a few weeks back when I was treating my cactus for mealybugs that my copiapoa marginata was developing white spots on it, I thought it might be spider mites but I have never found any on it but just to be safe I did treat it for them, I was struggling with an outbreak of them on other cact...

Steve Johnson wrote: ↑Tue Jul 20, 2021 1:55 am Glad I could help!

By the way, you might want to do this:

http://www.cactiguide.com/forum/viewtop ... 24&t=43819

Fixed and thank you.

I just want to say thank you, Steve.

Thanks to this thread I finally figured out what's been making my cactus sick, I have spider mites.