Development Standards | Design Standards—Landscaping and Irrigation
d. When the width of any landscape strip is 20 feet or greater, the required trees shall be staggered in two or more rows.
j. New landscape material provided within areas of undisturbed vegetation or within the protected area of significant trees shall give preference to utilizing indigenous plant species.
e. Shrubs shall be:
8. Landscaping – Alternative options
i. At least an AAN container Class No. 2 size at time of planting in Type II, III and parking area landscaping; ii. At least 24 inches in height at the time of planting for Type I landscaping; and iii. Maintained at a height not exceeding 42 inches when located in Type III or parking area landscaping. f. Groundcovers shall be planted and spaced to result in total coverage of the majority of the required landscape area within three years. g. All fences shall be placed on the inward side of any required perimeter landscaping along the street frontage. h. Required street landscaping may be placed within City of Sammamish street rights-of-way subject to the City of Sammamish public works standards, provided adequate space is maintained along the street line to replant the required landscaping should subsequent street improvements require the removal of landscaping within the rights-of-way. i. Required street landscaping may be placed within Washington State rights-of-way subject to permission of the Washington State Department of Transportation.
The following alternative landscape options may be allowed, subject to City approval, only if they accomplish equal or better levels of screening, or when existing conditions on or adjacent to the site, such as significant topographic differences, vegetation, structures, or utilities, would render application of this chapter ineffective or result in scenic view obstruction: a. The amount of required landscape area may be reduced to ensure that the total area for required landscaping, and/or the area remaining undisturbed for the purpose of wildlife habitat or corridors does not exceed 15 percent of the net developable area of the site. For the purpose of this subsection, the net developable area of the site shall not include areas deemed unbuildable due to their location within sensitive areas and any associated buffers; b. The average width of the perimeter landscape strip may be reduced up to 25 percent along any portion where: i. Berms at least three feet in height or architectural barriers at least six feet in height are incorporated into the landscape design; or ii. The landscape materials are incorporated elsewhere on-site;
310 | Title 21: Sammamish Development Code
Effective | January 1, 2022
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