Figure 2-34. Planting Zones
Plant Lists For more information about a number of these plants, please visit the Portland Plant List. No plants off the Portland Nuisance Plant List area allowed in stormwater management facilities or drainageways (See Section 4.1 of the Portland Plant List). A number of other plants may be appropriate for private stormwater management facilities – see Section 2.4 (Deciduous Forested Wetlands and Floodplains), Section 2.5 (Scrub-Shrub Wetlands) and Section 2.6 (Marsh) of the Portland Plant List. Additionally, see the Bureau of Development Services Tree and Landscaping Manual for plant suggestions that also meet required landscaping and screening goals.
City of Portland Stormwater Management Manual— August 2016 2-232 Chapter 2: Stormwater Facility and Conveyance Design, Submittal Requirements Public Stormwater Facility Plant List
(including Green Streets and Basins)
Botanic Name Common Name Zone NW Native Evergreen Height Potential Spacing O.C. Under Powerlines
Carex obnupta Slough Sedge A Y Y 48" 12" -
Juncus patens Spreading Rush A y Y 36" 12" -
Liriope muscari Big Blue Lilyturf A/B N Y 12-18” 12" -
Herbaceous Plants ‘Big Blue’
Arctostapylos
Kinnickinnick B Y Y 6" 12" - uva-ursi
Fragaria chiloensis Coastal Strawberry B Y Y 6" 12" -
Groundcovers Rubus calcynoides & Creeping Bramble A N Y 6" 12" - pentalobus
Carex morrowii Ice Dance Japanese A/B N N 12" 12" - ‘Ice Dance’ sedge
Iris douglasiana Douglas Iris B Y N 18" 12" - Accent Plants
Berberis (Mahonia) Creeping Oregon Grape B Y Y 18-24" 24" - repens Kelsey’s dwarf
Cornus sericea 'Kelseyi' A/B N N 36" 24" - red-twig dogwood Lavandula angustifolia Hidcote Blue English B N Y 24-36” 24" - ‘Hidcote Blue’ lavender
Small Shrubs Nandina domestica Moon Bay heavenly A/B N Y 36" 24" - ‘Moon Bay’ bamboo Nandina domestica Dwarf heavenly B N Y 15” 24" - ‘Nana’ bamboo
City of Portland Stormwater Management Manual— August 2016 2-241 Chapter 2: Stormwater Facility and Conveyance Design, Submittal Requirements
Public Stormwater Facility Plant List
(including Green Streets and Basins)
Botanic Name Common Name Zone NW Native Evergreen Height Potential Spacing O.C. Under Powerlines
Spiraea japonica Magic Carpet Japanese A/B Y N 24" 24" - ‘Walbuma’ spirea
Spiraea japonica Goldmound Japanese A/B N N 36" 24" - Small Shrubs ‘Goldmound’ spirea
Celtis occidentalis Common Hackberry N N 50’ - N
Cascara Buckthorn, Frangula purshiana Y N 25’ - Y Cascara Sagrada Gleditsia triacanthos Imperial Thornless N N 35’ - Y var. inermis 'Impcole' Honeylocust Gleditsia triacanthos Skyline Thornless N N 50’ - N var. inermis 'Skycole' Honeylocust
Nyssa sylvatica Black Tupelo N N 50’ - N
Trees Prunus virginiana Canada Red A/B N N 25' - Y 'Canada Red' Chokecherry
Quercus bicolor Swamp White Oak N N 50’ - N
Quercus shumardii Shumard Oak A/B N N 50' - N
Zelkova serrata Green vase Japanese N N 45’ - N ‘Green Vase’ zelkova Zelkova serrata Village Green Japanese N N 35’ - Y ‘Village Green’ zelkova
Minimum size is a # 1 Container for all plants, 2"- 3.5" caliper B&B for all trees.
City of Portland Stormwater Management Manual— August 2016 2-242 Chapter 2: Stormwater Facility and Conveyance Design, Submittal Requirements