A: Yes. Succulents in black are as easy to maintain as any other succulent. Aside from its aesthetic benefits, this is aside from having a plant that adds colors to our gardens or succulent collections. The potting mix provides nutrients for the soil. You can determine if your plant can be watered by looking at the soil below. Be sure to scoop up the top two- or three inches of soil and feel it before you water your plant. Two main methods are available for Agave propagation. The most common symptoms are: diarrhea, vomiting, stomach upset, and abnormal heart rhythm (rare).