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Urban Forestry in Seattle
                                 Mike Kuhns
                       USU Extension Forester




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




       ...
Seattle City Forestry

• SDOT – Non-boulevard street trees
  – City Arborist; City Landscape Architect
• Parks & Rec – Par...
Seattle Urban Forestry Issues
                                          • Parking strips privately owned w/ city easement
...
Traffic




          –5
Traffic Circles




SEA Streets




                                –6
–7
Tree Protection




                  –8
Signs




                                       Woody Weeds

        • Woody weeds everywhere; only Tamarisk
          re...
Woody Plants of Note

                                            •   Japanese maple (Acer palmatum)
                     ...
Raywood ash (Fraxinus oxycarpa)     witch-hazel (Hamamelis species)




                                    variegated swe...
purpleleaf plum (Prunus cerasifera)   purpleleaf plum (Prunus cerasifera)




                                      Swedis...
References                                         Thanks to…
•   Seattle City Tree Portal – www.seattle.gov/trees      • ...
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Mike Kuhns Urban Forestry Seattle

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Transcript of "Mike Kuhns Urban Forestry Seattle"

  1. 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. 2. Sabbatical with the U.S. Forest Service PNW Research Station’s New Urban Natural Resources Stewardship Program –2
  3. 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. 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. 5. Traffic –5
  6. 6. Traffic Circles SEA Streets –6
  7. 7. –7
  8. 8. Tree Protection –8
  9. 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. 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. 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. 12. purpleleaf plum (Prunus cerasifera) purpleleaf plum (Prunus cerasifera) Swedish whitebeam sawtooth oak (Quercus acutissima) (Sorbus intermedia) Weyerhaeuser Bonsai Collection –12
  13. 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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