Even though the succulent is still producing vital nutrients, it can still provide essential nutrients for survival. Make sure that the part of the cactus that's still in the soil is at least a few inches long. Once you have your gloves on, grab your new pot and cactus soil and fill it up, leaving some room for the plant and its roots. The plant should receive ample sunlight. They must be pollinated in order to produce seeds. If you don't plan to plant your Christmas Cactus seeds immediately, it is important to let them dry out before you store them.