In any district where tree and plant nurseries and greenhouses are permitted, the establishment of such uses shall be subject to the following requirements:
(A) No fertilizer, compost, manure or other odor or dust producing substance shall be stored within 50 feet of any property line.
(B) Greenhouse heating plants shall be in an enclosed building and shall not be less than 50 feet from any property line.
(C) Along any side or rear lot line, there shall be provided and maintained a planting or other appropriate screen of such size and density as to provide visual screening from adjacent residential properties.
(`92 Code, § 40-3-17)