In order to prevent the introduction, spread or dissemination of a harmful plant, the department, after written notice to the owner or his agent, may detect, take possession [of], stop movement [of], eradicate, suppress, control, treat, prevent or retard the spread of or destroy any harmful plant, or stop movement [of] or treat any article that is capable of harboring or moving a harmful plant. The department may, with the consent of the owner or by order of the district court, inspect any premises in this state for the presence of a harmful plant.