209 LANDSCAPE Planting Standards 12 Chapter Franklin Zoning Ordinance Effective January 1, 2023 12.9 Planting Standards 12.9.1 Minimum Quality and Size Standards A. Newly planted landscape plant materials shall conform to the latest version of the American Standard for Nursery Stock, ANSI Z60.1-2014. B. Type 1, 2, and 3 Trees, shall meet the planting and size requirements as defined in ANSI Z60.1. 1. Canopy trees shall be a minimum of two inches in caliper at the time of planting, as determined in the American Standard for Nursery Stock, ANSI Z60.1-2004. 2. Understory trees shall have a caliper of 1.5 inches at time of planting, as determined in the American Standard for Nursery Stock, ANSI Z60.1-2004. Multi-stem varieties shall be a minimum of ten feet in height above ground level at the time of planting. 3. Evergreen trees shall be a minimum of six feet in height and a minimum of two inches in caliper at the time of planting. 4. Except where required to be taller, shrubs shall be a minimum of 18 inches in height above ground level at the time of planting, and shall typically grow to a minimum height of five to six feet within four years. C. Plant materials used to meet the requirements of this Ordinance shall be selected, installed, and maintained from the City’s approved list, specifications, and details on the City website, unless otherwise approved by the Department of Planning and Sustainability. D. Plants listed on the current edition of the Invasive Exotic Pest Plants of Tennessee, as published by the Tennessee Exotic Pest Plant Council, shall be prohibited and shall not be credited towards the minimum requirements of this Ordinance. 12.9.2 Plant Diversity To maintain plant species diversity and health, new plantings shall meet the following: Number of Required Trees or Shrubs Minimum Number of Different Genuses in Roughly Equal Proportions Less Than 20 2 Genuses 20 to 39 3 Genuses 40 or More 4 Genuses 12.9.3 Stabilization Landscape planting areas shall be stabilized and maintained with seed, sod, ground covers, mulches, or other approved materials to prevent soil erosion and allow rainwater infiltration. 12.9.4 Planting in Easements A. Groundcover may be planted or installed within any utility or drainage easement. Trees and shrubs require approval by the easement holder. B. In areas that require canopy trees where overhead utilities prevent the use of canopy trees, understory trees may be substituted. Multi-stemmed understory trees may be used provided they meet the minimum size at time of planting. 12.9.5 Planting Near Light Poles Trees shall be clustered or moved to a more appropriate location if light poles conflict with tree locations. 12.9.6 Planting Near Fire Hydrants Tree locations near fire hydrants shall comply with the Fire Code, as applicable.
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