Hello Sarahbean19, I actually spritz the entire caudex and branches, next to really drenching the media. Humidity is so low anyways during the peak of summer, I can even see that within a minute it has dried off from the surface of the plant. Do your watering early in the day, before the hot sun hits it. I know my media is very coarse and gritty so I am not afraid of having root rot here when I do my daily watering in summer.
It will be concerning for the caudex if your media is not well draining, and I can see it looks well draining. Just be careful that it does not sit in water, got to let that excess water out.
