N.C. Gen. Stat. § 106-423

The Board of Agriculture shall have the authority to define nursery stock. The Commissioner of Agriculture shall have the right to cause all plant nurseries, and narcissus bulb fields where narcissus bulbs are commercially raised, within the State to be inspected at least once each year for serious plant pests. Every person, firm or corporation buying and reselling nursery stock shall register and secure a dealer's certificate for each location from which plants are sold.