07/06/2010 Council Packet - Laserfiche WebLink

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• Attachment 2: Landscaping and Tree Preservation Standards - REVISED JUNE 21, 2010 Page 8 height, width, form, hardiness zone, and other relevant information. The City shall classify new species based on tree size standards. For large projects the City may require applicants to comply with the following requirements: i. Species diversity ii. A minimum percentage of native species iii. A minimum percentage of large trees iv. A minimum percentage of evergreen trees. 2) The City shall maintain a list of prohibited species. This list includes species that are invasive or have other negative characteristics that may lead to ecological damage. 3) Exposed soil is not allowed. All areas not covered by a structure or hardscape shall be planted and mulched in accordance with the following: i. In areas with low pedestrian traffic, the use of low maintenance turf, typically fescue blends, is encouraged. In areas of high pedestrian traffic, the use of turf mixes with a higher percentage of rye grass is encouraged. ii. Turf in areas near roads and parking lots shall be salt tolerant. iii. Groundcovers shall be turf, perennials, annuals, small grasses, or low spreading shrubs. Type of groundcover should be determined by site conditions and anticipated use. Mulch is acceptable in landscape beds and areas not suitable for living groundcovers. iv. Hardy perennial forbs and ornamental grasses should be used in car overhang areas and places where snow may be stored. 4) Annual plantings should be minimized within 10' of a tree. The process of frequently replanting may damage the tree's shallow root system. 5) Seed mixes should be used in large expanses of naturalized areas. The City shall maintain a list of approved seed mixes. Where seed mixes are used, the City may request that visible edge treatments be planted with more deliberate groupings of flowering plants. 6) A permanent solid edge such as a 6" concrete, stone or other barrier is required between native seeded areas and turf unless otherwise approved by the City.