263.020.  Definitions. — As used in sections 263.010 to 263.180 the following terms mean:

  (1)  "Department", the Missouri department of agriculture;

  (2)  "Director", the director of the Missouri department of agriculture;

  (3)  "Nursery", any land, ground or premises within this state on or in which nursery stock is propagated or grown for sale, or any land, ground or premises within this state on or in which nursery stock is being fumigated, packed or stored;

  (4)  "Nursery dealer", any person not a grower of nursery stock in this state who:

  (a)  Buys nursery stock for the purpose of reselling or reshipping within the state of Missouri; or

  (b)  Makes landscape plans or plants nursery stock and negotiates in the purchase of nursery stock for his clients; or

  (c)  Transplants or moves nursery stock from place to place within this state for other persons for a consideration in payment for the nursery stock, for the planting of same, or for both nursery stock and planting; or

  (d)  Gives nursery stock as a premium or for advertisement purposes;

  (5)  "Nurseryman", any person, firm or corporation who owns, leases, manages, or is in charge of a nursery within this state;

  (6)  "Pests", any of the organisms defined as plant pests;

  (7)  "Places", any vessels, cars or other vehicles, buildings, docks, nurseries, orchards and other premises where plants or plant products are grown, kept or handled;

  (8)  "Plant inspector", persons employed by the department under the supervision of the state entomologist who perform highly specialized plant protection work on a professional basis and who meet the requirements of subsection 2 of section 263.030;

  (9)  "Plant pests", any insects, arthropods, nematodes, mollusks, invertebrates, fungi, bacteria, mycoplasmas, viruses, physiological disorders or parasitic weeds and other infectious agents which are injurious to plants or plant products and the pathological conditions in plants and plant products caused by these organisms;

  (10)  "Plants and plant products", trees, shrubs, vines, vegetables, forage and cereal plants and all other plants; cuttings, grafts, scions, buds and all other parts of plants, including but not limited to fruit, roots, bulbs, corms, tubers, seeds, wood, lumber and all other plant products.