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DESCRIPTIONTownship 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)
- 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.