Town Center | Development Standards—Landscaping and Irrigation
throughout the landscape strip spaced to create a filtered screen; ii. At least 50 percent deciduous trees and at least 30 percent evergreen trees (use of Leyland Cedars is discouraged); iii. Trees provided at the rate of one per 200 square feet or one per 20 linear feet, whichever is greater, of landscape strip; iv. Shrubs and perennials provided at the rate of one per 20 square feet of landscape strip and spaced no more than eight feet apart on center;
c. Curb cuts shall be provided where wheel stops or other structural barriers are present to allow surface water to drain to landscaped areas from adjacent impervious surfaces.
3. Type III Landscaping Screen.
v. Perennials;
a. Type III landscaping is a “see-through screen” that functions as a partial visual separator to soften the appearance of parking areas and building elevations. This landscaping is typically found along street frontage or between multifamily developments;
vi. Groundcover pursuant to SDC 21.07.070G.;
vii. Applicants shall demonstrate to the director’s satisfaction that the selected plant materials and configuration will meet the intent of the standards within three years of planting. This requirement will account for the size of materials and the growth rate; viii. No plants included in the King County noxious weed list.
b. Type III landscaping shall minimally consist of:
i. A mix of deciduous and evergreen trees generally interspersed throughout the landscape strip and spaced to create a continuous canopy;
ii. At least 70 percent deciduous trees;
iii. Trees provided at the rate of one per 250 square feet or one per 25 linear feet, whichever is greater, of landscape strip and spaced no more than 30 feet apart on center;
510 | Title 21: Sammamish Development Code
Effective | January 1, 2022
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