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Urban Forestry
Arborist's Office
206-684-TREE (8733)
Street Tree Planting Procedures
New Tree Planting
Tree Planting Tips
Trees Approved with Reservations
Watering Newly Planted Trees
Watering Established Trees
Urban Forestry Permits
Tree Service Companies With An Annual Permit
Tree Pruning Guide
Landscape Architecture
Seasonal Tree Care
Utility/Tree Inspections
Heritage Tree Program
Seattle Tree Inventory
Landscape Architecture & Natural Systems
Urban Forestry Class and Resources
A City Among the Trees
Traffic Circles

Street Tree Planting Procedures

Medium/Large Trees: Not Appropriate Under Wires
Approved For Planting Strips 5 or larger
(Wider planting strips recommended where space allows)


Botanical name

Common Name

Height in feet

Spread in feet

Flowers

Fall Color

Comments/Notes

Acer freemanii

Autumn Blaze Maple

50

40

 

orange

 

Acer nigrum Green Column

Green Column Maple

50

20

 

yellow to orange

Good close to buildings.

Acer platanoides

Columnar

40

15

 

yellow

Good close to buildings.

Acer platanoides

Emerald Queen

50

40

yellow

yellow

 

Acer platanoides

Parkway

40

25

yellow

yellow

 

Acer rubrum Bowhall

Bowhall Maple

40

15

 

yellow orange

 

Acer rubrum Karpick

Karpick Maple

35-40

20

 

yellow to orange

May work under very high powerlines with arborists approval.

Acer rubrum Scarsen

Scarlet Sentinel Maple

40

20

 

yellow orange

 

Acer pseudoplatanus Atropurpureum

Spaethii Maple

40

30

 

not significant

Leaves green on top purple underneath.

Aesculus x carnea Briottii

Red Horsechestnut

30

35

large 10 red clusters

no

Resists heat and drought better than other horsechestmuts.

Carpinus betulus Fastigiata

Pyramidal European Hornbeam

35

25

 

yellow

 

Fagus sylvatica Dawyck Purple

Dawyck Purple Beech

40

12

 

no

Purple foliage.

Betula jacquemontii

Jacquemontii Birch

40

30

 

yellow

White bark makes for good winter interest.

Fraxinus oxycarpa Raywood

Raywood Ash

35

25

 

reddish purple

 

Fraxinus pennsylvanica Patmore

Patmore Ash

45

 

35

 

yellow

Extremely hardy, may be seedless.

Fraxinus americana

Autumn Applause Ash

40

25

 

purple

 

Fraxinus pennsylvanica

Urbanite Ash

50

40

 

deep bronze

 

Ginko biloba Autumn Gold

45

35

 

yellow

 

Ginko biloba Princeton Sentry

40

15

 

yellow

Very narrow growth.

Nothofagus antarctica

Southern Beech

50

35

 

none

Rugged twisted branching and petite foliage.

Oxydendron arboreum

Sourwood

35

12

white, not noticeable

red

Consistent and brilliant fall color.

Gleditsia triacanthos

Shademaster Honeylocust

45

35

not noticeable

yellow

Do not confuse with Sunburst.

Quercus Crimschmidt

Crimson Spire Oak

45

15

   

Hard to find.

Quercus Ilex

Holly Oak

20

20

   

Prune to keep small, leave it alone to grow large.

Prunus sargentii

Columnarus

35

15

pink

orange to orange red

The cherry with the best fall color.

Prunus cerasifera Thundercloud Plum

20

20

light pink

 

Dark purple foliage.

Tilia americana Redmond

35

20

fragrant

yellow

Pyramidal, needs water.

Robinia x ambigua

Idahoensis Pink Idaho Locust

35

25

rose pink

yellow

Fragrant flowers.

Tilia cordata Chancole

Chancelor Linden

35

20

not noticeable

yellow

Pyramidal.

Tilia cordata Greenspire

Greenspire Linden

40

30

 

yellowish

Symmetrical, pyramidal form.

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