Heritage tree explained

A heritage tree is typically a large, individual tree with unique value, which is considered irreplaceable. The major criteria for heritage tree designation are age, rarity, and size, as well as aesthetic, botanical, ecological, and historical value.^[1] Heritage tree ordinances are developed to place limits upon the removal of these trees; the ordinances are oriented towards a specific tree, not a woodland.^[2] Heritage trees in Singapore are protected by law under the Heritage Trees Scheme adopted on 17 August 2001. The oak is depicted as England's heritage tree.^[3] In the US, the first state-sponsored heritage tree program began in 1995 in Oregon with the Giant Sitka Spruce.^[4] In Iowa, the Living Heritage Tree Museum contains descendants of famous trees.^[5] In the state of Washington, there are several categories of heritage trees, such as Historical, Specimen, Rare, or Significant Grove.^[6]

The city of Portland, Oregon maintains a database of trees designated as heritage trees. ^[7]

Notes and References

1. Book: Coates, Peter A.. American Perceptions of Immigrant And Invasive Species: Strangers on the Land. registration. 30 June 2012. 2006. University of California Press. 978-0-520-24930-1. 140–.
2. Book: Giusti, Gregory A.. A Planner's Guide For Oak Woodlands. 30 June 2012. 2005. ANR Publications. 978-1-879906-75-4. 90–91.
3. Book: Waterton. Emma. Watson. Steve. Culture, Heritage and Representation: Perspectives on Visuality and the Past. 30 June 2012. 31 May 2010. Ashgate Publishing, Ltd.. 978-0-7546-7598-3. 152–.
4. Book: Barnes, Christine. Only in Oregon: Natural and Manmade Landmarks and Oddities. 30 June 2012. 30 May 2004. Farcountry Press. 978-1-56037-292-9. 10–.
5. Book: Jones. Eric. Coffey. Dan. Thorkelson. Berit. Iowa Curiosities: Quirky Characters, Roadside Oddities & Other Offbeat Stuff. 30 June 2012. 10 November 2009. Globe Pequot. 978-0-7627-5419-9. 195–.
6. Book: Nolon, John R.. Open Ground: Effective Local Strategies for Protecting Natural Resources. 30 June 2012. 1 May 2003. Environmental Law Institute. 978-1-58576-055-8. 441–.
7. https://www.portlandoregon.gov/parks/38294 Urban Forestry | The City of Portland, Oregon