Mont. Code Ann. § 80-7-110

If a firm, nursery, plant dealer, or landscape service that owns nursery stock or other materials infected or infested with any injurious plant pest fails to comply with the instructions of the department for the destruction or control of the injurious plant pest or the destruction of the infested or infected nursery stock or other material within the time specified by the department, the department may condemn, remove, or destroy the nursery stock or other material or treat it with a proper remedy at the expense of the owner.