A gardener's purchase typically includes LIME, LOAM, seeds, SOD, bulbs, and SOIL. LIME is a white powdery substance made from calcium carbonate that is used to raise the pH of SOIL, making it less acidic. LOAM is a type of SOIL that is made up of sand, silt, and clay particles. Seeds are the reproductive structures of plants that can be planted to grow new plants. SOD is grass that has been cut into strips and is used to create a lawn. Bulbs are underground storage organs that contain the energy and nutrients needed for a plant to grow. SOIL is a mixture of organic matter, minerals, gases, liquids, and organisms that support life.