Intended purpose. The purpose of this district is the same as the purpose set forth in § 450-55A, together with additional purposes and permitted uses as set forth hereinafter for the substantially larger minimum lot sizes than are permitted in the C-2 Commercial District. Those additional purposes are to permit the expanded sale of farm- and nursery-related products, including residential garden supplies, residential lawn and garden machinery, rental and repairs, and the sale of other products closely related to farm, residential lawn and garden activities, nursery products or farm goods.