An owner, lessee, agent, and any other person in charge of land in a subdivision or within 100 feet of a subdivision must not allow:
(a) The generalized growth of any weed; and
(b) Any generalized plant growth more than 12 inches high within 15 feet of any property boundary. Generalized plant growth does not include trees, ornamental shrubs, flowers, or garden vegetables. (Mont. Co. Code 1965, § 116-3; 1972 L.M.C., ch. 3, § 1; 1977, L.M.C., ch. 40, § 2; 1989 L.M.C., ch. 21, § 1.)