Turf

Permitted on slopes less than 3:1 (three feet horizontal to one foot vertical).

Evergreen groundcover

Permitted-less than 18" in height at maturity

Shrubs

Not permitted as a continuous hedge or when located within site distance areas at street intersections, alleys, or driveways.  Permitted, up to 36” in height, as individual specimens or accent plants when not located within site distance areas.  Shrubs shall not be planted at a spacing that would result in a visual barrier between the street and sidewalk. (see Section 21A.48.060.G.)

Trees

Permitted-See Section 21A.48.060.D.

Annual & Perennial Flowering Plants

Permitted - not to exceed18" in height at maturity when located within site distance areas at street intersections, alleys, or driveways.  Annuals and perennials, up to 36” in height, may be used as individual specimens or accent plants when not located within site distance areas.  These plants shall not be planted at a spacing that would result in a visual barrier between the street and sidewalk.

Carriage Ways providing access to street

Permitted-Carriage ways not to exceed 4' wide if they are poured concrete.

Organic Mulch such as bark, shredded plant material, or compost

Permitted and encouraged to conserve water around plants.  May also be used as the only material on portions of the park strip.

Inorganic Materials including pervious materials (gravel, stone, and boulders) or paving materials (limited to brick, concrete, or natural stone pavers)

Park strips 36” or less:  Permitted in 100% of the park strip surface area.  The use of plants in combination with these materials is encouraged.

Park strips over 36” in width: Permitted either as water-conserving mulch for plants or may also be used alone on portions of a park strip. 

Paving materials shall be kept a minimum of 18” away from existing street trees.

Water

Sufficient water shall be provided to keep all plants in a healthy condition.

Prohibited materials

•      Asphalt

•      poured concrete, except in park strips under  24” in width or for carriage ways less than 4 feet in width.  If used in park strips that are 24” or less in width, concrete shall be finished with a stamped pattern resembling brick or natural stone or scored with another decorative pattern to distinguish it from the adjacent sidewalk.

•      thorn-bearing plants

•      structural encroachments

•      plants (except trees), boulders, and other objects over 18” in height in site distance areas

•      The total coverage of all organic mulch and inorganic material used without plants shall not exceed 67% of the park strip surface area.