Lighting guidelines will vary depending on whether your succulent is indoors or outside. Make sure you have adequate lighting, and only water your plant after the soil has dried to the top. Your plant might not get enough water if the soil dries out too quickly during summer. This little gem can grow in clumps of up to four inches high and approximately 12 inches diameter. They can be placed in a window sill at the west or south side of a windowsill. A modern, white window sill pot like this one will look fantastic with the Bishop’s Cap cactus.