Overall Design Concept

Project Goals

A B • Create distinct, yet complementary identities for each of the 4 regions, that are on par with neighboring city medians C • Incorporate existing vegetation, including trees, where possible • Increase driver visibility by reducing sightline obstructions D • Add color and interest to roadway experience, without creating excessive maintenance requirements • Improve soil conditions, which will lead to decreased plant mortality rates E • Create planting design that can be installed in phases, taking advantage of planting during the rainy season • Provide annual maintenance outline 1 Hidden Springs/Santa Anita

Project Design Team F Walker Macy: G Mike Zilis, Principal-in-Charge Ben Vaughn, Project Manager H Claudia Sims, Landscape Desginer

City of West Linn: I 2 J Upper Salamo Road Lance Calvert, Public Works Director K Jeffrey Randall, Transportation Supervisor Michael Perkins, Park Development Coordinator and City Arborist

N 3 Middle Salamo Road 205

West Linn P Oregon City Q

R 4 Lower Salamo Road Willamette River

0 200 400 800ft N Overall Design Concept West Linn Median Planting Design November 2013 1 Lake Oswego • Highly varied planting design, with a higher percentage of Arctostaphylos uva-ursi - Kinnikinnick perennials used for color, texture, and interest Berberis thunbergii atropurpurea - Purple Barberry • Incorporation of planters and decorative elements Bergenia crassifolia - Pigsqueak • Deciduous large canopy trees Geranium sp. - Geranium • 25% evergreen Helleborus orientalis - Hellebore • Higher maintenance level Nandina domestica - Heavenly Bamboo Rudbeckia hirta - Yellow Conefl ower Magnolia sp. - Dwarf Magnolia Viburnum davidii - David Viburnum

Wilsonville • Pared-down plant palette, with emphasis on simple seasonal Berberis thunbergii atropurpurea - Purple Barberry shifts in color and contrasting green tones Lonicera pileata - Boxleaf Honeysuckle • Spring blooming ornamental deciduous trees Prunus sp. - Ornamental Cherry Tree • 25% evergreen Rosa sp. - Rose • Low maintenance

Rosemont Ridge • Somewhat varied plant palette, with emphasis on massing of Anemone hupehensis var. sinensis - Japanese Anemone grassy textures and meadow-like perennials Calamagrostis acutifl ora ‘Karl Forester’ - Feather Reed Grass • Minimal use of trees Pennisetum alopecuroides ‘Hameln’ - Fountain Grass • 25% evergreen Potentilla fruticosa - Shrubby Cinquefoil • Moderate maintenance level Rosa rugosa - Dog Rose

Meadows Shopping Center • Non-fl owering plant palette, with emphasis on textural shifts Lonicera pileata - Boxleaf Honeysuckle and compact growth Pennisetum alopecuroides ‘Hameln’ - Fountain Grass • 50% evergreen Rosa rugosa - Dog Rose • Low maintenance Ulmus parvifolia - Chinese Elm Viburnum davidii - David Viburnum

Planting Precedents West Linn Median Planting Design November 2013 2 • Blue Rug Juniper 60% cover, with large portions of dead plant material HIDDEN SPRINGS ROAD A • Soil appears to be compacted and lacking in fertility

• Remove all existing roots and vegetation • Import topsoil, scarify subgrade

• Shrubby Juniper, 5’ Forsythia, and declining Weeping Cherry Trees existing • Minimal exposed soil • Shrub height and hanging tree branches obstruct visibility

• Remove all existing roots and vegetation C • Import topsoil, scarify subgrade

• Blue Rug Juniper 30% cover, with large portions of dead plant material • 2 large Weeping Cherry Trees D • Soil appears to be compacted and lacking in fertility

• Remove all existing roots and vegetation • Import topsoil, scarify subgrade

SANTA ANITA DRIVE

• Arctostaphylos 30% cover, with large portions of dead plant material • Soil appears to be compacted and lacking in fertility

E • Remove all existing roots and vegetation • Import topsoil, scarify subgrade

• Large patches of overgrown shrubby Juniper • Large Douglas Fir Tree • Approx. 1:1 slopes currently retained by existing vegetation • Large bare areas • Remove all existing roots and vegetation, except for large juniper shrubs which should be removed during the dry summer months to prevent erosion and soil runoff • Remove Douglas Fir Tree • Import topsoil, scarify subgrade 0 50 100 200ft N • Install erosion control mats on slopes greater than 3:1

Region 1 - Existing Conditions/Demolition West Linn Median Planting Design November 2013 3 Acer freemanii ‘Autumn Blaze’ Hidden Springs/Santa Anita Drive Median Planting Concept Autumn Blaze Red Maple 2” caliper or larger

Lonicera pileata Nandina domestica ‘Moon Bay’ Pennisetum alopecuroides ‘Hameln’ Cistus ‘Snowfi re’ Pyracantha x ‘Monelf’ Boxleaf Honeysuckle Moon Bay Heavenly Bamboo Fountain Grass Snowfi re White Rockrose Red Elf Pyracantha #1 container #1 container #1 container #3 container #1 container Region 1 - Proposed Design West Linn Median Planting Design November 2013 4 Typical Planting Layout Nandina domestica at 3’ o.c.

P P P P P P P BBBB B BBB C C C C C C C C C C C B B B B BBB C P P P P P P P P

Cistus ‘Snowfi re’ at 4’ o.c. Pennisetum alopecuroides Acer freemanii ‘Autumn Blaze’ at 40’ o.c. Lonicera pileata at 4’ o.c. ‘Hameln’ at 3’ o.c. Pyracantha x ‘Monelf’ at 2’ o.c. Every 80’ provide: 24 Lonicera pileata PLANT SPACING NOTES: 9 Cistus ‘Snowfi re’ 15 Nandina domestica A. Where median width is less than 2’, install concrete 36 Berberis buxifolia ‘Nana’ pavers with concrete sub-base. Alternatively provide 2” 15 Pennisetum alopecuroides ‘Hameln’ mulch with weed barrier if concrete pavers are not installed 2 Acer freemanii ‘Autumn Blaze’ at this time. B. Where vehicle visibility is an issue, offset typical planting layout 40’ from end of median and plant as noted in the typical median-end planting layout. At view triangles, do Typical Median-End Planting Layout not plant plants greater than 24” height at maturity or any plantings if it obscures views of oncoming cars. We recommend that each intersection view triangles be verifi ed in the fi eld prior to planting.

PLANT INSTALLATION NOTES:

1. Install erosion control measure as required. Teucrium chamaedrys at 2’ o.c. 2. Provide jute netting on all slopes greater than 3:1. 3. Mulch all planting with bark dust at minimum 2” depth. Perennial mix at 1’ o.c. Hold bark dust away from trunks of trees and shrubs. 4. Set root ball of shrubs and trees 1” above fi nish grade of Plant 40’ median ends with: the soil. Teucrium chamaedrys 5. Stake all trees with two 2” dia. round 8’ ht. poles and tree Perennial mix consisting of ties. Echinacea and Rudbeckia 6. Plant shrubs and trees with 20-12-5 slow release fertilizer tablets. Provide quantity of tablets per manufacturer (Amounts will vary based on median width) instruction. 7. Provide hand watering of all plantings without irrigation during summer months when there is not enough precipitation to maintain soil moisture. We recommend hand watering when there is no precipitation between July 1st and October 1st for the fi rst and second Verify view triangle on-site summer after planting. After two years, no irrigation should be necessary unless there is an unusually long drought.

Teucrium chamaedrys Rudbeckia fulgida ‘Goldsturm’ Echinacea purpurea ‘Leuchstern’ 8. Consider hardscape, such as a broom fi nish concrete Wall Germander Black-Eyed Susan Conefl ower #1 container #1 container #1 container surface, in areas where islands are four feet wide or less and /or where visibility is an issue . Region 1 - Proposed Design West Linn Median Planting Design November 2013 5 • 12 trees HIDDEN SPRINGS ROAD A • 138 Lonicera pileata • 52 Cistus • 86 Nandina domestica ‘Moon Bay’ • 207 Pyracantha x ‘Monelf’ • 86 Pennisetum setaceum ‘Hameln’

• 5 trees • 64 Lonicera pileata • 24 Cistus • 40 Nandina domestica ‘Moon Bay’ • 96 Pyracantha x ‘Monelf’ C • 40 Pennisetum setaceum ‘Hameln’

• 3 trees • 33 Lonicera pileata • 12 Cistus D • 21 Nandina domestica ‘Moon Bay’ • 50 Pyracantha x ‘Monelf’ • 21 Pennisetum setaceum ‘Hameln’

SANTA ANITA DRIVE

• 5 trees • 48 Lonicera pileata • 18 Cistus • 30 Nandina domestica ‘Moon Bay’ • 72 Pyracantha x ‘Monelf’ E • 30 Pennisetum setaceum ‘Hameln’

• 12 trees • 157 Lonicera pileata • 59 Cistus • 98 Nandina domestica ‘Moon Bay’ • 236 Pyracantha x ‘Monelf’ • 98 Pennisetum setaceum ‘Hameln’

0 50 100 200ft N

Region 1 - Plant Counts West Linn Median Planting Design November 2013 6 LATIN NAME COMMON NAME SIZE SPACING/PLANTING NOTES MAINTENANCE NOTES

Acer freemanii ‘Autumn Blaze’ Autumn Blaze Maple 2 in. 40’ o.c. Prune as needed to maintain 10’ minimum distancefrom canopy Acer freemanii ‘Armstrong’ Armstrong Maple cal. to ground

Pyracantha x ‘Monelf’ Red Elf Pyracantha #1 2’ o.c. Do not prune; dwarf form should remain compact without pruning Min. 1’ from curb

Cistus ‘Snowfi re’ Snowfi re Rock Rose #3 4’ o.c. Prune every 2-3 years to maintain compact form Min. 4’ from curb

Echinacea purpurea ‘Leuchtstern’ Purple Conefl ower #1 1’ o.c. Prune to within 6” of ground every February Min. 1’ from curb

Lonicera pileata Boxleaf Honeysuckle #1 4’ o.c. Prune annually along roadway to control growth Min. 2’ from curb

Nandina domestica ‘Moon Bay’ Moon Bay Dwarf Heavenly Bamboo #1 3’ o.c. Do not prune; dwarf form should remain compact without pruning Nandina domestica ‘Gulf Stream’ Gulf Stream Dwarf Heavenly Bamboo Min. 18” from curb

Pennisetum alopecuroides ‘Hameln’ Hameln Fountain Grass #1 3’ o.c. Prune to within 6” of ground every February Pennisetum orientale ‘Karly Rose’ Pink Fountain Grass Min. 18” from curb

Rudbeckia fulgida ‘Goldsturm’ Black-Eyed Susan #1 1’ o.c. Prune to within 6” of ground every February Min.1” from curb

Teucrium chamaedrys Wall Germander #1 2’ o.c. Do not prune; dwarf form should remain compact without pruning Min. 1’ from curb

*Alternate variety

Region 1 - Plant Schedule West Linn Median Planting Design November 2013 7 • Dense cotoneaster • No trees • No exposed soil

• Selectively remove cotoneaster to accomodate new trees

ROSEMONT ROAD

• Dense cotoneaster, with Rosa nutkana growing through in patches • Marginally healthy Katsura Trees, though some appear to be failing • No exposed soil

F • Selectively remove cotoneaster to accomodate new trees • Remove Roses • Remove Katsura trees

• Dense cotoneaster, with Rosa nutkana growing through in patches • Marginally healthy Katsura Trees, though some appear to be failing G • Half of median planter completely bare

• Remove cotoneaster to accomodate new trees SALAMO ROAD • Replant cotoneaster in bare areas at density similar to existing areas • Remove Roses • Remove Katsura trees • Replant with following Region 3 design.

• Dense cotoneaster, with Rosa nutkana growing through in patches • Marginally healthy Katsura Trees, though some appear to be failing • No exposed soil

• Selectively remove cotoneaster to accomodate new trees H • Remove roses • Remove Katsura trees

• Dense cotoneaster, with Rosa nutkana growing through in patches • Marginally healthy Katsura Trees, though some appear to be failing • No exposed soil

PARKER ROAD • Remove roses I • Remove Katsura trees J

0 50 100 200ft N

Region 2 - Existing Conditions/Demolition West Linn Median Planting Design November 2013 8 Acer freemanii ‘Autumn Blaze’ TYPICAL SPACING: 40 FT.

6’ WIDE

REMOVE COTONEASTER

Cotoneaster horizontalis Salamo Road Medians

Region 2 - Proposed Design West Linn Median Planting Design November 2013 9 LATIN NAME COMMON NAME SIZE SPACING/PLANTING NOTES MAINTENANCE NOTES

Acer freemanii ‘Autumn Blaze’ Autumn Blaze Maple 2 in. 40’ o.c. Prune as needed to maintain 10’ minimum distancefrom canopy Acer freemanii ‘Armstrong’ Armstrong Maple cal. to ground

Region 2 - Plant Schedule West Linn Median Planting Design November 2013 10 • Arctostaphylos ground cover • Berberis, Dwarf Ilex, and Cornus kelseyi planted in groups of two • Marginally healthy Katsura Trees, though some appear to be failing

K • Remove Arctostaphylos to accomodate new trees and shrubs • Remove Katsura trees • Remove barberry and replace with dwarf variety

• Arctostaphylos ground cover • Large Chinese Elm trees

• Remove Arctostaphylos to accomodate new trees and shrubs • Limb-up Elm trees to 10’ to remove visual obstructions at eye level

L • Arctostaphylos ground cover • Large Cornus stolonifera and Roses • Large Chinese Elm trees

SALAMO ROAD • Remove Arctostaphylos to accomodate new trees and shrubs • Remove Cornus stolonifera; Roses to remain • Limb-up Elm trees to 10’ to remove visual obstructions at eye level

• Arctostaphylos ground cover • Large Cornus stolonifera, Rosa nutkana, various overgrown shrubs M • Large Chinese Elm trees • Extensive patches of exposed soil

PONDERAY DRIVE • Remove Arctostaphylos to accomodate new trees and shrubs • Remove Cornus stolonifera; Roses to remain • Limb-up Elm trees to 10’ to remove visual obstructions at eye level

• Arctostaphylos ground cover • Large Cornus stolonifera, Rosa nutkana, various overgrown shrubs • Large Chinese Elm trees • Extensive patches of exposed soil N • Remove Arctostaphylos to accomodate new trees and shrubs • Remove Cornus stolonifera; Roses to remain • Limb-up Elm trees to 10’ to remove visual obstructions at eye level

0 50 100 200ft N

Region 3 - Existing Conditions/Demolition West Linn Median Planting Design November 2013 11 Salamo Road

Ulmus parvifolia Berberis thunbergii ‘Crimson Pygmy’ Perovskia atriplicifolia Pyracantha x ‘Monelf’ Prunus laurocerasus ‘Otto Luyken Chinese Elm Purple Leaf Barberry Russian Sage Red Elf Pyracantha Otto Luyken English Laurel

Region 3 - Proposed Design West Linn Median Planting Design November 2013 12 Prunus laurocerasus ‘Otto Luyken’ at 4’ o.c. Pyracantha x ‘Monelf’ 2’ o.c. Perovskia atriplicifolia 3’ o.c. Berberis thunbergii ‘Crimson Pygmy’ 3’ o.c.

Every 80’ provide: PLANT SPACING NOTES:

22 Prunus laurocerasus ‘Otto Luyken’ A. Where median width is less than 2’, install concrete 36 Pyracantha x ‘Monelf’ pavers with concrete sub-base. Alternatively provide 2” 15 Berberis buxifolia ‘Nana’ mulch with weed barrier if concrete pavers are not installed 15 Perovskia atriplicifolia at this time.

B. Where vehicle visibility is an issue, offset typical planting layout 40’ from end of median and plant as noted in the typical median-end planting layout. At view triangles, do not plant plants greater than 24” height at maturity or any plantings if it obscures views of oncoming cars. We recommend that each intersection view triangles be verifi ed in the fi eld prior to planting. Teucrium chamaedrys at 2’ o.c. PLANT INSTALLATION NOTES: Perennial mix at 1’ o.c. 1. Install erosion control measure as required. Plant 40’ median ends with: 2. Provide jute netting on all slopes greater than 3:1. Teucrium chamaedrys 3. Mulch all planting with bark dust at minimum 2” depth. Perennial mix consisting of Hold bark dust away from trunks of trees and shrubs. Echinacea and Rudbeckia 4. Set root ball of shrubs and trees 1” above fi nish grade of the soil. (Amounts will vary based on median width) 5. Stake all trees with two 2” dia. round 8’ ht. poles and tree ties. 6. Plant shrubs and trees with 20-12-5 slow release fertilizer tablets. Provide quantity of tablets per manufacturer instruction. 7. Provide hand watering of all plantings without irrigation Verify view triangle on-site during summer months when there is not enough precipitation to maintain soil moisture. We recommend hand watering when there is no precipitation between July 1st and October 1st for the fi rst and second summer after planting. After two years, no irrigation should be necessary unless there is an unusually Teucrium chamaedrys Rudbeckia fulgida ‘Goldsturm’ Echinacea purpurea ‘Leuchstern’ Wall Germander Black-Eyed Susan Conefl ower long drought. #1 container #1 container #1 container 8. Consider hardscape, such as a broom fi nish concrete surface, in areas where islands are four feet wide or less and /or where visibility is an issue . Region 3 - Proposed Design West Linn Median Planting Design November 2013 13 LATIN NAME COMMON NAME SIZE SPACING/PLANTING NOTES MAINTENANCE NOTES

Echinacea purpurea ‘Leuchtstern’ Purple Conefl ower #1 1’ o.c. Prune to within 6” of ground every February Min. 1’ from curb

Perovskia atriplicifolia Russian Sage #1 3’ o.c. Prune to within 6” of ground every February Min. 18” from curb

Prunus laurocerasus ‘Otto Luyken’ Otto Luyken Dwarf English Laurel #3 4’ o.c. Do not shear; dwarf form should remain compact without pruning Min. 2’ from curb

Pyracantha x ‘Monelf’ Red Elf Pyracantha #1 2’ o.c. Do not prune; dwarf form should remain compact without pruning Min. 1’ from curb

Rudbeckia fulgida ‘Goldsturm’ Black-Eyed Susan #1 1’ o.c. Prune to within 6” of ground every February Min.1” from curb

Teucrium chamaedrys Wall Germander #1 2’ o.c. Do not prune; dwarf form should remain compact without pruning Min. 1’ from curb

*Alternate variety

Region 3 Plant Schedule West Linn Median Planting Design November 2013 14 • Creeping Cotoneaster ground cover • Liquidambar styracifl ua (Sweetgum) trees

• Selectively remove cotoneaster to accomodate new trees and shrubs • Replant cotoneaster in bare patches at ends of medians • Add Sweetgum as needed to recreate regular spacing

BLAND CIRCLE

O SALAMO ROAD

• Creeping Cotoneaster ground cover • Liquidambar styracifl ua (Sweetgum) trees • Large areas of exposed soil

• Replant cotoneaster in bare patches at ends of medians • Add Sweetgum as needed to recreate regular spacing

P • Creeping Cotoneaster ground cover • Liquidambar styracifl ua (Sweetgum) trees • Large areas of exposed soil

• Selectively remove cotoneaster to accomodate new trees and shrubs • Replant cotoneaster in bare patches at ends of medians • Add Sweetgum as needed to recreate regular spacing Q

• Creeping Cotoneaster ground cover • Liquidambar styracifl ua (Sweetgum) trees • Large areas of exposed soil • Scattered weedy patches

• Selectively remove cotoneaster to accomodate new trees and shrubs • Replant cotoneaster in bare patches at ends of medians • Add Sweetgum as needed to recreate regular spacing

R • Creeping Cotoneaster ground cover • Liquidambar styracifl ua (Sweetgum) trees

BARRINGTON DRIVE • Large areas of exposed soil • Scattered weedy patches

• Selectively remove cotoneaster to accomodate new trees and shrubs • Replant cotoneaster in bare patches at ends of medians • Add Sweetgum as needed to recreate regular spacing

0 50 100 200ft N

Region 4 - Existing Conditions/Demolition West Linn Median Planting Design November 2013 15 Salamo Road Median

Nandina domestica ‘Moon Bay’ Lonicera pileata Spiraea betulifolia ‘Tor’ Liquidambar styracifl ua Yucca fi lamentosa ‘Bright Edge’ Moon Bay Heavenly Bamboo Boxleaf Honeysuckle Birchleaf Spirea Sweetgum Bright Edge Yucca

Region 4 - Proposed Design West Linn Median Planting Design November 2013 16 Spiraea betulifolia ‘Tor’ 4’ o.c. Lonicera pileata 4’ o.c. Yucca fi lamentosa ‘Bright Edge 2’ o.c. Nandina domestica ‘Moon Bay’ 3’ o.c.

PLANT SPACING NOTES:

Every 80’ provide: A. Where median width is less than 2’, install concrete pavers with concrete sub-base. Alternatively provide 2” 8 Spiraea betulifolia mulch with weed barrier if concrete pavers are not installed 16 Lonicera pileata at this time. 12 Yucca fi lamentosa ‘Bright Edge 24 Nandina domestica ‘Moon Bay’ B. Where vehicle visibility is an issue, offset typical planting layout 40’ from end of median and plant as noted in the typical median-end planting layout. At view triangles, do not plant plants greater than 24” height at maturity or any plantings if it obscures views of oncoming cars. We recommend that each intersection view triangles be verifi ed in the fi eld prior to planting.

PLANT INSTALLATION NOTES: Teucrium chamaedrys at 2’ o.c. 1. Install erosion control measure as required. Perennial mix at 1’ o.c. 2. Provide jute netting on all slopes greater than 3:1. 3. Mulch all planting with bark dust at minimum 2” depth. Plant 40’ median ends with: Hold bark dust away from trunks of trees and shrubs. Teucrium chamaedrys 4. Set root ball of shrubs and trees 1” above fi nish grade of Perennial mix consisting of the soil. Echinacea and Rudbeckia 5. Stake all trees with two 2” dia. round 8’ ht. poles and tree ties. (Amounts will vary based on median width) 6. Plant shrubs and trees with 20-12-5 slow release fertilizer tablets. Provide quantity of tablets per manufacturer instruction. 7. Provide hand watering of all plantings without irrigation during summer months when there is not enough precipitation to maintain soil moisture. We recommend hand watering when there is no precipitation between July 1st and October 1st for the fi rst and second summer after planting. After two years, no irrigation should be necessary unless there is an unusually

Teucrium chamaedrys Rudbeckia fulgida ‘Goldsturm’ Echinacea purpurea ‘Leuchstern’ long drought. Wall Germander Black-Eyed Susan Conefl ower 8. Consider hardscape, such as a broom fi nish concrete #1 container #1 container #1 container surface, in areas where islands are four feet wide or less and /or where visibility is an issue .

Region 4 - Proposed Design West Linn Median Planting Design November 2013 17 LATIN NAME COMMON NAME SIZE SPACING/PLANTING NOTES MAINTENANCE NOTES

Echinacea purpurea ‘Leuchtstern’ Purple Conefl ower #1 cont. 1’ o.c. Prune to within 6” of ground every February Min. 1’ from curb

Lonicera pileata Boxleaf Honeysuckle #2 cont. 4’ o.c. Prune annually along roadway to control growth Min. 2’ from curb

Nandina domestica ‘Moon Bay’ Moon Bay Dwarf Heavenly Bamboo #1 cont. 3’ o.c. Do not prune; dwarf form should remain compact without pruning Nandina domestica ‘Gulf Stream’ Gulf Stream Dwarf Heavenly Bamboo Min. 18” from curb

Prunus laurocerasus ‘Otto Luyken’ Otto Luyken Dwarf English Laurel #3 cont. 4’ o.c. Do not shear; dwarf form should remain compact without pruning Min. 2’ from curb

Pyracantha x ‘Monelf’ Red Elf Pyracantha #1 cont. 2’ o.c. Do not prune; dwarf form should remain compact without pruning Min. 1’ from curb

Rudbeckia fulgida ‘Goldsturm’ Black-Eyed Susan #1 cont. 1’ o.c. Prune to within 6” of ground every February Min.1” from curb

Spiraea betulifolia ‘Tor’ Birchleaf Spirea #1 cont. 4’ o.c. Prune to within 6” of ground every February Min.1” from curb

Yucca fi lamentosa ‘Bright Edge’ Bright Edge Yucca #1 cont. 2’ o.c. Do not prune; dwarf form should remain compact without pruning Min. 1’ from curb

*Alternate variety

Region 4 Plant Schedule West Linn Median Planting Design November 2013 18