Mike Kuhns Urban Forestry Seattle

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Urban Forestry in SeattleMike Kuhns

USU Extension Forester

Seattle Facts & Figures

Metro area population 3.4 million; city 600K Density 7,100/mi2 (SLC is 1,700/mi2)

41% f it i t 41% of citys area is water 37 in./yr. precip; 0.8 in. in July; cool, mild Home of Starbucks, Nirvana, Microsoft, Pearl

Jam, Amazon, Jimi Hendrix, Boeing (sort of), Bruce Lee (buried)

Called Rain City, Emerald City, Jet City

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Sabbatical with the U.S. Forest Service PNW Research Stations New Urban Natural Resources Stewardship Program

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Seattle City Forestry

SDOT Non-boulevard street trees City Arborist; City Landscape Architect

Parks & Rec Park and boulevard trees Parks & Rec Park and boulevard trees City Forester

Planning & Development Private trees Seattle City Light Utility trees

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Seattle Urban Forestry Issues

Parking strips privately owned w/ city easement Canopy cover from 40% in 1972 to 18% in 2007

Goal to increase cover to 30% in 30 yearsy Most canopy not native New ordinance may restrict all private tree removal

Currently can remove 3 trees/year without permit Partly due to major landslide & stormwater runoff concerns

2007 Urban Forest Management Plan tiny.cc/SeattleUFMP

Citizen Involvement

Seattle Urban Forest Stakeholders Green Seattle Partnership

C d L d C Cascade Land Conservancy PlantAmnesty Seattle Parks Foundation Earthcorps Many community, neighborhood groups

Urban Canyons

Space for Trees

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Traffic

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Traffic Circles

SEA Streets

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Tree Protection

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Signs

Woody Weeds

Woody weeds everywhere; only Tamarisk requires control.

Noxious weeds theyve given up on: Noxious weeds they ve given up on: Blackberries, butterfly bush, ivies, Scotch broom.

Weeds of concern: Common hawthorn, English holly, English laurel,

European mountain-ash

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Woody Plants of Note

Japanese maple (Acer palmatum) Incense-cedar (Calocedrus decurrens)

S t B b th (C i ) Santa Barbara ceanothus (C. impressus) Raywood ash (Fraxinus oxycarpa) witch-hazel (Hamamelis species) variegated sweetgum (Liquidambar

styraciflua Variegata)

Woody Plants of Note

cucumbertree (Magnolia acuminata) Persian parrotia (Parrotia persica)

l l f l (P if ) purpleleaf plum (Prunus cerasifera) sawtooth oak (Quercus acutissima) Swedish whitebeam (Sorbus intermedia)

Japanese maple(Acer palmatum)

incense-cedar(Calocedrusdecurrens)

Santa Barbara ceanothus(Ceanothus impressus)

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Raywood ash (Fraxinus oxycarpa) witch-hazel (Hamamelis species)

witch-hazel (Hamamelis species)variegated sweetgum (Liquidambar

styraciflua Variegata)

cucumbertree (Magnolia acuminata) Persian parrotia (Parrotia persica)

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purpleleaf plum (Prunus cerasifera) purpleleaf plum (Prunus cerasifera)

sawtooth oak (Quercus acutissima)Swedish whitebeam(Sorbus intermedia)

Weyerhaeuser Bonsai Collection

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References

Seattle City Tree Portal www.seattle.gov/trees Seattle SEA Streets tiny.cc/SEAStreets Pervious pavement www perviouspavement orgPervious pavement www.perviouspavement.org Wash. Park Arboretum depts.washington.edu/wpa Butchart Gardens www.butchartgardens.com Bonsai www.weyerhaeuser.com/Company/Bonsai King County Weeds tiny.cc/KingCountyWeeds Fremont Area www.fremontseattle.com USU Extension Forestry extension.usu.edu/forestry

Thanks to

U.S. Forest Service PNW Research Station Urban Natural Resources Stewardship

Nolan Rundquist Seattle City Arborist SDOT Nolan Rundquist, Seattle City Arborist, SDOT

Mike KuhnsUSU Extension Forester

435-797-4056

mike.kuhns@usu.eduextension.usu.edu/forestry

www.treebrowser.orgwww.utahforestproducts.org