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Mike Kuhns Urban Forestry Seattle
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Mike Kuhns Urban Forestry Seattle

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  • 1. Urban Forestry in Seattle Mike 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% of city’s area i water f it ’ is t • 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’ –1
  • 2. Sabbatical with the U.S. Forest Service PNW Research Station’s New Urban Natural Resources Stewardship Program –2
  • 3. Seattle City Forestry • SDOT – Non-boulevard street trees – City Arborist; City Landscape Architect • Parks & Rec – Park and boulevard trees – City Forester • Planning & Development – Private trees • Seattle City Light – Utility trees –3
  • 4. 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 years y • 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 • Cascade L d C C d Land Conservancy • PlantAmnesty • Seattle Parks Foundation • Earthcorps • Many community, neighborhood groups Urban Canyons Space for Trees –4
  • 5. Traffic –5
  • 6. Traffic Circles SEA Streets –6
  • 7. –7
  • 8. Tree Protection –8
  • 9. Signs Woody Weeds • Woody weeds everywhere; only Tamarisk requires control. • Noxious weeds they’ve given up on: they ve – Blackberries, butterfly bush, ivies, Scotch broom. • Weeds of concern: – Common hawthorn, English holly, English laurel, European mountain-ash –9
  • 10. Woody Plants of Note • Japanese maple (Acer palmatum) • Incense-cedar (Calocedrus decurrens) • Santa B b S t Barbara ceanothus (C. i th (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) • purpleleaf plum (P l l f l (Prunus cerasifera) if ) • sawtooth oak (Quercus acutissima) • Swedish whitebeam (Sorbus intermedia) Japanese maple (Acer palmatum) incense-cedar (Calocedrus Santa Barbara ceanothus decurrens) (Ceanothus impressus) –10
  • 11. Raywood ash (Fraxinus oxycarpa) witch-hazel (Hamamelis species) variegated sweetgum (Liquidambar witch-hazel (Hamamelis species) styraciflua ‘Variegata’) cucumbertree (Magnolia acuminata) Persian parrotia (Parrotia persica) –11
  • 12. purpleleaf plum (Prunus cerasifera) purpleleaf plum (Prunus cerasifera) Swedish whitebeam sawtooth oak (Quercus acutissima) (Sorbus intermedia) Weyerhaeuser Bonsai Collection –12
  • 13. References Thanks to… • Seattle City Tree Portal – www.seattle.gov/trees • U.S. Forest Service PNW Research Station • Seattle SEA Streets – tiny.cc/SEAStreets Urban Natural Resources Stewardship • Pervious pavement – www perviouspavement org www.perviouspavement.org • Nolan Rundquist, Seattle City Arborist SDOT Rundquist Arborist, • 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 Mike Kuhns USU Extension Forester 435-797-4056 mike.kuhns@usu.edu extension.usu.edu/forestry www.treebrowser.org www.utahforestproducts.org –13

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