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Structured Removal


 Completed Ash Structured Removal and RSVP 2010-2013* Maps: 
 
Map of 2010-2013 Ash Removals
*Residential Street Vitality Program
 2014 Structured Removal of Ash Maps
Ward 3 Map Ward 5 Map Ward 6,7 Map






What is structured removal of ash?

In response to the emerald ash borer, The City of Saint Paul employs structured removal programs for strategically reducing the total percentage of ash trees in parks and boulevards in the urban forest of Saint Paul.

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How are trees selected for structured removal?
Ash trees that are declining from non-EAB-related symptoms such as drought, salt injury, mechanical injury, and structural defects are selected for structured removal. In general, ash trees become brittle and drop many branches while reaching maturity and are a source of common complaints from residents.
           


Why are you removing live trees?

Most of the ash trees selected for structured removal are still alive but in a state of irreversible decline. Ash trees in this declining state will be removed at an increased rate in the future as EAB continues to spread. An estimated 30% of Saint Paul's urban forest is comprised of ash trees—far higher than the recommended level. Delaying the necessary removal of ash trees from the urban forest will only compound the cost and labor of removal for future generations.

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Example of an ash tree removed in Highland Park as part of
the structured removal program. This tree was technically
“alive”, but inner portion of the tree was decayed and hollow.

Why not save the trees with insecticide treatments?
Saint Paul Forestry currently treats high value ash trees on boulevards that meet the following requirements:
  • Within one mile from a known EAB infestation.
  • Between 10-20" diameter at breast height (DBH)
  • In of good health with no known defects
  • No visible conflicts with utility wires, street lights, or roadway clearance.

 
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If this is about EAB, then why aren't you removing trees in the known EAB infested areas?

EAB-infested trees are promptly removed and will continue to be removed as they are identified. Limiting removal of ash trees in the known infested areas is a strategy to contain EAB to a smaller area. The City of Saint Paul understands that, based on experiences of EAB removal in Michigan and Ohio, that eradication of ash trees from a known infested area only causes EAB to spread further. The City also employs insecticide treatments to high value ash trees located within the known EAB-infested areas to try to reduce EAB populations.
 

What happens once the ash trees are removed?
 
  • Ash trees are removed between January and April.
  • Tree stumps are removed in the spring months as soon as the snow melts and the ground has thawed.
  • A variety of new trees, with a minimum of two species per block, are planted to replace the ash trees, generally at a ratio of 1-to-1, following the general boulevard tree planting criteria.
  • The Urban Forester replanting the project will leave a door tag at all homes receiving new boulevard trees with information on the type of tree as well as how to care for and maintain the tree. Saint Paul Forestry annually hires landscape installers to replant boulevard trees in the spring from the time the ground thaws until June 15 and in the fall from October 15 to the time the ground freezes.
  • Property owners receiving new boulevard trees may request one tree watering bag per boulevard tree by contacting Saint Paul Forestry by phone at 651-632-5129.

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Example: 2009 Structured ash removal on W. California Avenue. 
New trees were planted following the ash removal.
(photo date: summer 2012)


How do I make the right decision for my ash tree(s)?
Visit the City of Saint Paul's Homeowner's Guide to EAB.


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