Hello JB,
I am no expert but mine are doing fine. They bloomed for a very lone time this year for me. I did have some trouble with my Huernia. Base rot. I was wondering if they need a lower PH level. I tried this by using Sulfur for Azaleas. Seems to have really helped. The lower PH prevents rot and repels insects. Just a guess. It's cheap and you could try on some. I am using this on all my Sansevieria as well.
Stush
