Section 22. Landscape. The Owner of each Lot, as a minimum, shall sod the front of his Lot with grass, and shall at a times maintain such grass in a neat, clean and attractive condition, periodically resodding damaged areas of the lawn as they occur. No more than ten percent (10%) in area of the front yard area of any Lot, excluding driveways and sidewalks, may be covered by rock material other than vegetation.