Nursery purchases typically refer to items purchased from a nursery or garden center, such as plants, bulbs, saplings, and seeds. Bulbs are underground storage organs that contain the energy and nutrients needed for a plant to grow. Saplings are young trees that have not yet reached maturity. Seeds are small, hard-coated structures that contain the genetic material of a plant. All of these items can be found in nurseries and garden centers, and are necessary for successful gardening.