Karen, if your talking about the Euphorbia lactea 'cristata' I can tell you what I did but it is the same as I do for most of my succulents and is not the typical advice given. I use nice organic soils that still are well draining like rose soil. This works with my style of watering habits matched with my climate. I never fertilized. Let me look around and try to find the photos. I think I saw some of them in one of my 2015 folders the other day. The roots get truly massive if given the space. Off to look for photos....might be a while!
