(1) This chapter and its provisions are of statewide concern and occupy the whole field of regulation regarding the cultivation, production, processing, registration, labeling, sale, storage, transportation, distribution, notification of use, use of seeds, and planting of seeds to the exclusion of all local ordinances or regulations. Except as otherwise specifically provided in this chapter, no ordinance or regulation of any political subdivision may prohibit or in any way attempt to regulate any matter relating to the cultivation, production, processing, registration, labeling, sale, storage, transportation, distribution, notification of use, use of seeds, or planting of seeds.
(2) The provisions of subsection (1) of this section shall not preempt county or city local zoning ordinances governing the physical location or siting of seed facilities.