When buying a plant, it is always practical to order potting soil at the same time. Unless otherwise specified, the soil is universal and suitable for most types of garden and houseplants. Quality potting compost contains essential nutrients that keep plants healthy and vigorous. Whenever you repot a plant, it is important to use fresh soil to ensure the best growing conditions. The same applies when adding compost to a garden border – new soil will provide the structure and nourishment your plants need to thrive.