This holds true for certain succulent groups. Our hidden cactus cup can be used as a potter for smaller succulent plants. It will not become waterlogged and can withstand extreme weather changes that may affect other plants. If you're growing Spear Head indoors, you won't need to worry too much about seasonal temperature changes. Desiccation problems can develop if roots are allowed to grow beyond their pots. To prevent root rot, succulents need well-drained soil. Regular potting dirt won't work.