Landscaping. The entire lot, except areas covered by buildings or surfaced as parking or service areas, shall be suitably landscaped with grass, shrubs, trees, ground cover and pedestrian walkways in such a manner as to minimize erosion and stormwater runoff and harmoniously blend the use on the site with the character of the neighborhood. Where lot lines coincide with residence district boundaries, there shall be planted evergreen trees of such type and spacing as may be required by the Village Board of Trustees of an initial height of not less than five feet and adequate ultimately to screen as much as possible all activity on the lot from the view of residences in the adjoining residence district. A wall or fence of location, height, design and material approved by the Village Board of Trustees may be substituted for part or all of the required landscaped screening. The Village Board of Trustees may waive or modify the landscaped screening requirements of this chapter where existing topography, landscaped and/or land uses already provide adequate screening and separation. All required landscaping shall be properly maintained throughout the life of any use which it was designed to serve. If said landscaping is not maintained as required, the Building Inspector shall give 30 days' written notice by certified mail, addressed to the owner of record of such premises as shown on the most recent assessment roll. If said notice is not complied with, the Village Board may authorize the necessary maintenance and assess the cost against the property on which the landscaping is located. Any costs so incurred shall be certified to the Tax Assessor and shall become a municipal lien against the property if not paid within 30 days of the mailing of the bill.