All nurserymen shall register with the State Entomologist each year, on or before July first, and make application for inspection, and furnish such data on such blanks as the State Entomologist prescribes and furnishes. All firms, stores and individuals who sell but do not grow nursery stock shall be classed as dealers and shall, each year, on or before March first, register with the State Entomologist, giving the chief sources of their nursery stock and such data as he requires, on such forms as he prescribes and furnishes, and the State Entomologist may issue a permit allowing such dealer to sell such nursery stock. The State Entomologist may make such regulations as he deems necessary to govern the shipment of nursery stock into the state by any nursery, person, firm or corporation outside the state.