I have a lot of succulents but have trouble knowing when to water these two. One is a euphorbia cristata and the other is a fairy castle cactus. With most succulents you can tell by touch or feel when to water but these I need to tell by looking. I try to be aware of how plump they are or not, but still not sure how far to let them go. Does anyone have some suggestions knowing when these guys need to be watered. I use Planta of course but use it as a guide only.



