mike kuhns urban forestry seattle
Post on 19-Oct-2014
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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 city’s 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 Station’s 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 they’ve 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
[email protected]/forestry
www.treebrowser.orgwww.utahforestproducts.org