nuisance trees

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Township of Langley staff presentation on nuisance tree policy, April 14, 2008.


  • 1. TREES AND NUISANCE TREES 2008 04 14

2. Street Tree Program

  • Program in place since 1990
  • Over14,500 street treeshave been planted to date
  • All land development projects requireinstallation of street trees by developer
  • All road works projects in urban areas include street trees where the road is being completed with curbs
  • Tree species chosen for hardiness, safety & long-term benefits

3. Benefits of Street Trees

  • Neighbourhood identity
  • Improvements to microclimate (shade, stormwater, air)
  • Habitat value (nesting, shelter, food provision)
  • Aesthetics
  • Street Trees are protected and maintained by the Township

4. 5. 6. 7. 8. Challenges of Trees

  • Leaves that need to be raked
  • Insects that are attracted to trees
  • Roots creating uneven surfaces
  • Too much shade
  • Messy fruit and seed litter
  • Tree in the way of other desired uses
  • Need to plant the right tree in the right place

9. 10. 11. Tree Planting Improvements

  • Root Barriers are now part of standard planting detail where trees are close to sidewalks and driveways
  • Trees need sufficient soil volume to be healthy and mature into a significant contributor to a healthy urban ecosystem. The optimum for a 12 calibre tree is a soil volume of 22 cu. meters.

12. 13. Tree Planting Improvements

  • New technology of a structural cell system allows for soil volumes under hard surfaces so that future heaving is avoided.
  • Current practise is to provide as much volume of soil as possible in a utility strip to support trees.

14. 15. Tree Maintenance

  • Urban Forestry Section responsible for maintenance of street trees.
  • Undertook $56,000 of pruning work in 2007 to reduce tree nuisances of encroaching roots and branches.

16. 17. Tree Maintenance

  • Spray programs are also completed for trees that are identified with heavy insect infestations that are creating nuisances for adjacent properties.
  • These arbouricultural practises take a minimum of one complete growing cycle to be effective in reducing the nuisances.

18. 19. 20. Nuisance Trees

  • Nuisance Tree Policy to Council April 7, 2008
  • Emphasis on need to deal with nuisance trees through Arbouricultural methods first for one full growing season
  • Revisions made on number of neighbours to be required to be in support of removing a tree where the nuisance can not be reduced via Arbouricultural methods
  • Clarification on maximum number of neighbours to be polled for a corner property
  • Clarification that the cost of removing and replacing a street tree will be shared 50% with adjacent neighbour and 50% by Township

21. Example 1 3 2 5 6 4 7 8 9 10 12 11 22. 23.


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