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9.6215 Credit for Preservation of Heritage Trees. Variable credit shall be allowed for <br /> preservation of heritage trees, as defined in the adopted Eugene Urban Forest <br /> Management Plan. The planning and development director shall determine the value <br /> of the Heritage Tree, according to formulas established in Valuation of Landscape <br /> Trees, Shrubs and Other Plants (International Society of Arboriculture) and shall <br /> relieve the contractor /developer from planting a number of trees having a value of up <br /> to 50 percent of the value of the Heritage Tree preserved. <br /> 9.6220 Installation and Maintenance. Installed plant materials shall meet current nursery <br /> industry standards, including necessary soil depth and quality. All required landscape <br /> areas soils shall extend to the native soil. Plant materials shall be properly supported <br /> to ensure survival. Support devices such as guy wires or stakes shall not interfere <br /> with vehicular or pedestrian movement. Maintenance of landscaped areas is the <br /> ongoing responsibility of the property owner. All landscaping shall be installed and <br /> maintained to protect it from vehicular damage through the use of curbing, to provide <br /> adequate vision clearance, and to maintain plant materials in a healthy and attractive <br /> manner. Required shrubs and trees shall not be pruned or sheared below their code - <br /> required spread or height. <br /> 9.6225 Irrigation. An automatically controlled irrigation system shall be provided for all <br /> plant materials used to meet these landscape standards. Drip irrigation and low - <br /> gallon systems are encouraged for non -turf areas. The irrigation system need not <br /> provide water to unplanted areas, or to areas where existing native plants have been <br /> preserved. The irrigation systems shall be maintained and operated in a manner that <br /> promotes the health and appearance of the plant material while minimizing water use <br /> and avoiding excessive run -off. <br /> 9.6230 Landscape Plans. Landscape plans shall be submitted in a manner approved by the <br /> city manager showing all proposed landscaped areas and verification by an Oregon <br /> licensed landscape architect that the plan complies with the applicable landscape <br /> standards in this land use code. <br /> 9.6235 Plant Materials Standards. <br /> (1) Shrubs and Ground Cover. All required plant materials shall be of sufficient <br /> size and number to meet the required 70 percent coverage standard within 3 to 5 <br /> years according to the type of landscape standard being addressed. Mulch is not <br /> a substitute for ground cover plants. All required shrubs shall be in at least 3 <br /> gallon containers prior to planting, unless otherwise specified. <br /> (2) Trees. Except where 1 or the other is specified elsewhere in this code, trees <br /> may be either deciduous or evergreen varieties. Required canopy trees at the <br /> time of planting must be fully branched and have a minimum diameter of 2 <br /> inches as measured by American Association of Nurserymen Standards. <br /> Required evergreen trees at the time of planting must be fully branched and a <br /> Ordinance - 217 <br />