Weeds and grass growing on all lands within the City shall be cut on a periodic basis so that the height of such is never greater than six (6) inches, with the following exceptions:
1. For undeveloped parcels containing one acre or more, all areas within 20 feet of any developed lot, any public or private street or any sidewalk, or any lot under construction shall be maintained so that no grass or weeds exceed six inches in height. Areas within such lots not within said 20 foot areas shall be maintained so that no grass or weeds exceed 12 inches in height.
2. For right-of-way and ditches adjacent to active agricultural operations, all areas between the rights-of-way and crops, and all areas within 20 feet of any developed lot or any lot under construction shall be maintained so that no grass or weeds exceed six inches in height, except in cases where a rural right-of-way cross section still exists and such maintenance is not practical. In those cases, grass and weeds shall be kept mowed to the six inch standard on the shoulder or flat part of property adjacent to the street.