(a) As used in this section:
(1) “Local legislation” means any ordinance, motion, resolution, amendment, regulation, or rule adopted by a political subdivision of this state; and
(2) “Political subdivision” means a local governmental entity, including without limitation a city, county, township, or municipal corporation and any other body corporate and politic that is responsible for government activities in a geographical area smaller than that of the state.
(b) A political subdivision shall not:
(1) Regulate the registration, packaging, labeling, sale, storage, distribution, cultivation, any other use, or application of seeds; or
(2) Adopt or continue in effect local legislation relating to the registration, packaging, labeling, sale, storage, distribution, cultivation, any other use, or application of seeds.
(c) Local legislation in violation of this section is void and unenforceable.
(d) This section does not prohibit a city of the first class, a city of the second class, or an incorporated town from exercising the legitimate police powers of the city or town over building, planning, and zoning regulations under § 14-56-201 et seq., § 14-56-301 et seq., and § 14-56-401 et seq.