Nuisance Trees

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

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Nuisance Trees

  1. 1. TREES AND NUISANCE TREES 2008 04 14
  2. 2. Street Tree Program <ul><li>Program in place since 1990 </li></ul><ul><li>Over 14,500 street trees have been planted to date </li></ul><ul><li>All land development projects require installation of street trees by developer </li></ul><ul><li>All road works projects in urban areas include street trees where the road is being completed with curbs </li></ul><ul><li>Tree species chosen for hardiness, safety & long-term benefits </li></ul>
  3. 3. Benefits of Street Trees <ul><li>Neighbourhood identity </li></ul><ul><li>Improvements to microclimate (shade, stormwater, air) </li></ul><ul><li>Habitat value (nesting, shelter, food provision) </li></ul><ul><li>Aesthetics </li></ul><ul><li>Street Trees are protected and maintained by the Township </li></ul>
  4. 8. Challenges of Trees <ul><li>Leaves that need to be raked </li></ul><ul><li>Insects that are attracted to trees </li></ul><ul><li>Roots creating uneven surfaces </li></ul><ul><li>Too much shade </li></ul><ul><li>Messy fruit and seed litter </li></ul><ul><li>Tree in the way of other desired uses </li></ul><ul><li>Need to plant the right tree in the right place </li></ul>
  5. 11. Tree Planting Improvements <ul><li>Root Barriers are now part of standard planting detail where trees are close to sidewalks and driveways </li></ul><ul><li>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. </li></ul>
  6. 13. Tree Planting Improvements <ul><li>New technology of a structural cell system allows for soil volumes under hard surfaces so that future heaving is avoided. </li></ul><ul><li>Current practise is to provide as much volume of soil as possible in a utility strip to support trees. </li></ul>
  7. 15. Tree Maintenance <ul><li>Urban Forestry Section responsible for maintenance of street trees. </li></ul><ul><li>Undertook $56,000 of pruning work in 2007 to reduce tree nuisances of encroaching roots and branches. </li></ul>
  8. 17. Tree Maintenance <ul><li>Spray programs are also completed for trees that are identified with heavy insect infestations that are creating nuisances for adjacent properties. </li></ul><ul><li>These arbouricultural practises take a minimum of one complete growing cycle to be effective in reducing the nuisances. </li></ul>
  9. 20. Nuisance Trees <ul><li>Nuisance Tree Policy to Council April 7, 2008 </li></ul><ul><li>Emphasis on need to deal with nuisance trees through Arbouricultural methods first for one full growing season </li></ul><ul><li>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 </li></ul><ul><li>Clarification on maximum number of neighbours to be polled for a corner property </li></ul><ul><li>Clarification that the cost of removing and replacing a street tree will be shared 50% with adjacent neighbour and 50% by Township </li></ul>
  10. 21. Example 1 3 2 5 6 4 7 8 9 10 12 11

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