It shall be a violation of the plant pest act for any person:

1. (1) to hinder or prevent the commissioner from carrying out the duties of the act.
2. (2) to sell, transport, or offer for sale nursery stock which has not been inspected and certified, by a duly authorized nursery inspector, to be apparently free of plant pests.
3. (3) to fail to carry out the treatment or destruction of condemned plants or other material after official notification by the commissioner.
4. (4) to use an invalid certificate of inspection or shipping tag in the sale or distribution of nursery stock covered by sections 18.44 to 18.61.
5. (5) to misrepresent or mislabel nursery stock as to vigor, hardiness and viability.
6. (6) to violate any quarantine promulgated by the commissioner in accordance with the act.
7. (7) to fail to comply with any provision of the plant pest act, or any rules promulgated thereunder.
8. (8) to possess nursery stock or have it on the premises for the purposes of sale or disposition without a valid certificate of inspection, dealer's certificate or greenhouse certificate.