It shall be unlawful to deliver, transport or ship within this state, nursery stock which has not been inspected in accordance with the provisions of this article and which does not carry an inspection certificate attached to each carload, truckload, box, bale, package or item, or to deliver, ship, send or bring any such nursery stock into this state from any place outside thereof, unless there is attached to each carload, truckload, box, bale, package or item, in a conspicuous place, a valid certificate of inspection issued by the proper official of the state, territory, district or country from which it was shipped, sent or brought, showing that such nursery stock, including soil, was found to be free from plant pests at the time of inspection.

Nursery stock brought into the state under an inspection certificate, as above required, may be sold and moved under the certificate of a registered West Virginia nurseryman or dealer or agent, but this shall not preclude inspection at any time within the state.