There are many reasons you would want to add a topsoil dressing to your plants, not only it will make your plant look more attractive, but it can protect your plants from standing water and rot. It keeps the base of your plants dry after watering as well as helping to disperse the water easily and prevent the soil from spilling. Without a top soil dressing, the plant may look more boring, by putting less focus on the plant, and more on the soil. With some dressing, the plant stands out in a more put together way. Every succulent owner knows well to add top soil to every potted plant.