21.06.200 Special street frontage landscaping plans

21.06.200 Special street frontage landscaping plans.

The landscaping requirements of this section shall supersede other landscaping requirements of this title and the Lynnwood Citywide Design Guidelines, as adopted by reference in LMC 21.25.145(B)(3), that may conflict. However, if it is determined through project design review (Chapter 21.25 LMC) that it is desirable to locate street trees between the street curb and walking route of the sidewalk, then a species other than London Plane shall be used that is similar in growth habit and form to London Plane but does not cause damage to sidewalks and below-ground utilities. The following street frontage landscaping plans specifying planting materials are in effect:

A. East and West Sides of 33rd Avenue W from 188th Street SW to Alderwood Mall Blvd. London plane trees two-and-one-half- to three-inch minimum caliper size, 12- to 15-foot minimum height, planted 25 feet on centers with branches eliminated to a height of six feet where necessary to prevent sight obstruction; plus lawn, except that ivy, spaced so as to achieve 50 percent groundcover within two years, may be allowed on portions demonstrated to be too steep for adequate lawn maintenance.

B. East and West Sides of 36th Avenue W from 180th Place SW to 196th Street SW. Red maple trees two-and-one-half- to three-inch minimum caliper size, 12- to 15-foot minimum height, 25 feet on centers with branches eliminated to a height of six feet where necessary to prevent sight obstruction; plus lawn, except that ivy, creeping St. Johnswort, or kinnikinnick, spaced so as to achieve 50 percent groundcover within two years, shall be allowed on portions demonstrated to be too steep for adequate lawn maintenance.

1. Planting Layout. Minimum nine-foot-wide sod lawn area between curb and sidewalk with a maximum slope of 4:1; Red Maple trees three inches minimum caliper size, 12- to 15-foot minimum height, centered in lawn area and planted 30 feet on center with branches eliminated to a height of six feet where necessary to prevent sight obstruction; sidewalk subject to public works department standards; and five-foot-wide shrub area planted with evergreen shrubs forming a solid screen and obtaining a 36-inch maximum height, and evergreen groundcover spaced to achieve 100 percent coverage within two years. Refer to Figures 21.06.1 and 21.06.2 for alternative landscape configurations when insufficient right-of-way width exists to meet the above standards.

2. Shrub Planting. The shrub area shall contain shrubs, 18-inch minimum height, planted three feet on center or greater if recommended by a landscape professional, and any of the following species:

a. Otto Luyken Laurel;

b. Apple Blossom Escallonia;

c. Raphiolepis Ovata;

d. Ilex Crenata ‘Convexa’;

e. Delavayi Osmanthus or Holly-Leaf Osmanthus.

3. Irrigation. A below-ground irrigation system shall be provided in addition to the required landscaping to insure that all plant materials receive adequate moisture on a regular basis.

1. Planting Layout. Five-foot-wide sidewalk adjacent to curb; and a 10-foot-wide landscape area consisting of a six-foot-wide sod lawn or groundcover area adjacent to the sidewalk, and a four-foot-wide area planted with evergreen or deciduous trees and evergreen shrubs. The tree and shrub area shall contain shrubs forming a screen obtaining a three-foot maximum height, and evergreen groundcover spaced to achieve 100 percent coverage within two years. Up to five feet of the above landscaping may be within excess right-of-way with approval of the public works department. Refer to Figures 21.06.3, 21.06.4 and 21.06.5 for landscape standards applying to different access driveway configurations.

WIDE ROAD SHOULDER
(16 ft. minimum between curb and property line)

NARROW ROAD SHOULDER
(16 ft. minimum between curb and property line)

Figure 21.06.1. TRANSITION FROM WIDE
TO NARROW ROAD SHOULDER

Figure 21.06.2. TREES AT SIDE PROPERTY LINE

2. Tree Planting. The above street trees shall be planted in groups of two or three at access driveways with each tree spaced 20 feet apart and at least three feet from the parking area curb. If the distance between access driveways on the same or adjoining property exceeds 150 feet, two trees 20 feet apart shall be planted at the midpoint. In addition, one tree shall be planted 10 feet from each side property line; however, a tree will not be required if the distance from the access driveway to the side property line is 75 feet or less. Trees shall be a minimum of two and one-half inches in caliper, 10-foot minimum height at time of planting with branches eliminated to a height of six feet where necessary to prevent sight obstruction for motorists and pedestrians at access driveways and street intersections.

Any of the following trees may be used; however, within each site the same type of tree shall be used along the street frontage:

a. Columnar European Hornbeam;

b. Red Spire Ornamental Pear;

c. Katsura Tree;

d. Carrierei Hawthorn;

e. Washington Thorn;

f. Holly Oak.

3. Shrub Planting. The tree and shrub area shall contain shrubs 18 inches minimum height, planted three feet on center or greater separation if recommended by a landscape professional, and any of the following species:

a. Glossy Abelia ‘Edward Goucher’;

b. Otto Luyken Laurel;

c. Japanese Holly ‘Convexa’;

d. Laurustinus ‘Spring Bouquet’;

e. Evergreen Euonymus ‘Sarcoxie’;

f. India Hawthorn (Raphiolepis);

g. Delavay Osmanthus;

h. Darwin Barberry.

4. Groundcover Planting. The tree and shrub area shall contain groundcover, spaced 18 to 24 inches on center or greater separation if recommended by a landscape professional, and any of the following species:

a. Kinnikinnick;

b. Common Wintercreeper;

c. Cotoneaster ‘Lowfast,’ ‘Dammeri’;

d. Creeping Mahonia;

e. Juniper ‘Shore Juniper,’ ‘Blue Carpet Juniper,’ ‘Shimpaku,’ ‘Tam.’

SINGLE ACCESS WITH TRAVEL LANE ADJACENT TO PLANTING

SINGLE ACCESS WITH PARKING ADJACENT TO PLANTING

Figure 21.06.4. DOUBLE ACCESS WITH PARKING ADJACENT TO PLANTING

Figure 21.06.5. DOUBLE ACCESS WITH TRAVEL LANES ADJACENT TO PLANTING

5. Irrigation. A below-ground irrigation system shall be provided in addition to required landscaping to insure that all plant materials receive adequate moisture on a regular basis.

6. Existing Vegetation. Existing vegetation shall be retained to the greatest extent possible within the required minimum 20-foot-wide buffer on properties on the north side of 194th Street SW along the property lines adjacent to residentially zoned property. This requirement shall work in conjunction with the site-screening requirements in the applicable zone. Vegetation which is diseased, dead, dying, or judged to be hazardous may be removed with permission of the city.

1. Planting Layout. A sidewalk subject to public works department standards adjacent to curb; and a 10-foot-wide landscape area with a maximum slope of 4:1 consisting of a five-foot-wide sod lawn area adjacent to the sidewalk, and a five-foot-wide tree and shrub area planted with Red Maple (Acer Rubrum) trees spaced 30 feet on center, evergreen shrubs forming a screen obtaining a three-foot maximum height, and evergreen groundcover spaced to achieve 100 percent coverage within two years. Up to five feet of the above landscaping may be within excess street right-of-way with approval of the public works department. Refer to Figures 21.06.6, 21.06.7, and 21.06.8 for landscape standards when the grade between sidewalk and parking creates a slope of more than 4:1.

2. Tree Planting. Red Maple street trees shall be planted at least three feet from the parking area curb. The trees shall be a minimum of three inches in caliper, 15-foot minimum height at time of planting with branches eliminated to a height of six feet where necessary to prevent sight obstruction for motorists and pedestrians at access driveways and street intersections.

a. Glossy Abelia ‘Edward Goucher’;

b. Otto Luyken Laurel;

c. Japanese Holly ‘Convexa’;

d. Laurustinus ‘Spring Bouquet.’

Figure 21.06.6. SIDEWALK LEVEL WITH PARKING

SIDEWALK BELOW PARKING SEPARATED BY ROCKERY

Figure 21.06.8. SIDEWALK ABOVE PARKING SEPARATED BY ROCKERY

a. Kinnikinnick;

b. Common Wintercreeper.

5. Irrigation. A below-ground irrigation system shall be provided in addition to the required landscaping to insure that all plant materials receive adequate moisture on a regular basis. (Ord. 3326 §§ 4 – 6, 2019; Ord. 2388 §§ 4, 5, 2001; Ord. 2020 § 4, 1994; Ord. 1602, 1987; Ord. 1601, 1987; Ord. 1528 § 1, 1986; Ord. 1461 § 4, 1985)