If the Construction Official or Zoning Officer, upon inspection, determines that the landscape materials, buffer areas and screens are not being maintained in good condition, he shall notify the owner, in writing, of his findings and order that any negligent maintenance on the part of the owner be corrected within 30 days of the notice. In the event that any planting required by this chapter fails to live, it shall be replaced. If the owner fails to correct these conditions, after proper notification by the Construction Official or the Zoning Officer, the Mayor and Council may authorize correction of the condition by authorizing the appropriate legal action.