[CANUFNET] large tree moves

[james urban]

The trees at the World Trade Center Memorial had issues at first but then recovered.  But also note that there was a significant die off of the tree along the Fulton Street side of the massive fountain where a spray plume kept the tree leaves overly moist.  The 2017 and 2019 google images show these trees (replacements) still stressed.  The trees along the Greenwich Street side of the site, the portion with the greatest percent of paving, have also not grown nearly as well as the rest of the trees.

It is important to note that the soil for these trees is all highly process light weight soil mix.  To say that the process of design, detailing, construction, phasing etc of these trees and their support systems, is likely the most complex in the world is actually an understatement.  So this is not a good example of typical anything.

The World Trade trees are a  great experiment none the less, but with so many variables, not to mention a political shroud around speaking critically about the project, will make it impossible to ever draw any conclusions.

Jim Urban

> On Sep 6, 2019, at 8:53 AM, Naomi Zurcher via CANUFNET <canufnet at list.web.net> wrote:
> 
> One would have to determine if the post-transplant irrigation schedule was adequate and maintained. 
> 
> The World Trade Memorial Plaza is  an Urban Heat Island and exposing large transplanted trees to this sort of environment could be a recipe for failure.
> 
>> On Sep 5, 2019, at 3:14 PM, Jack Radecki via CANUFNET <canufnet at list.web.net <mailto:canufnet at list.web.net>> wrote:
>> 
>> It is my understanding that the City lost those trees that were moved at City Hall bare root and all. Weller Tree Service had moved the trees successfully over the years when the underground parking garage was under repair. I sent Nikki a message offline with suggestions based on my experience moving up to 18 inch DBH trees.
>> Jack Radecki RCA 342
>>  
>> From: CANUFNET <canufnet-bounces at list.web.net <mailto:canufnet-bounces at list.web.net>> On Behalf Of Alice Casselman via CANUFNET
>> Sent: September 5, 2019 2:59 PM
>> To: Canadian Urban Forest Network <canufnet at list.web.net <mailto:canufnet at list.web.net>>
>> Cc: Alice Casselman <alice.casselman37 at gmail.com <mailto:alice.casselman37 at gmail.com>>
>> Subject: Re: [CANUFNET] large tree moves
>>  
>> Sheridan Nurseries ?
>> A
>>> On Sep 4, 2019, at 5:40 PM, james urban via CANUFNET <canufnet at list.web.net <mailto:canufnet at list.web.net>> wrote:
>>>  
>>> Actually the world trade trees were large by nursery standards about 10" dbh but all were nursery grown and prepared trees.   The prep went on for many years and were very expensive.  Not very applicable to the average project.  
>>>  
>>> I would suggest looking at moving large trees bare root as was done at the Toronto city hall.  I have heard of trees over 20” dbh being moved bare root.
>>>  
>>> Jim Urban
>>> 
>>> 
>>>> On Sep 3, 2019, at 3:00 PM, Russell Eirich via CANUFNET <canufnet at list.web.net <mailto:canufnet at list.web.net>> wrote:
>>>>  
>>>> You should look at the new World Trade Tower building in New York.  They had some very large tree moves associated with that as part of the memorial. 
>>>>  
>>>> From: CANUFNET <canufnet-bounces at list.web.net <mailto:canufnet-bounces at list.web.net>> On Behalf Of Anguish, Nikki via CANUFNET
>>>> Sent: Thursday, August 29, 2019 7:44 PM
>>>> To: canufnet at list.web.net <mailto:canufnet at list.web.net>
>>>> Cc: Anguish, Nikki <Nikki.Anguish at calgary.ca <mailto:Nikki.Anguish at calgary.ca>>
>>>> Subject: [CANUFNET] large tree moves
>>>>  
>>>> Hi All
>>>>  
>>>> We are investigating moving a large elm tree.
>>>>  
>>>> It is a ~80 year old heritage tree with a canopy of 50’. We realize this is “Disney-esk” and not common in Western Canada; however, we are hoping that with the wealth of knowledge here, someone has experience and is willing to share ideas on the up-front costs and long term maintenance.
>>>>  
>>>> Thank you in advance!
>>>>  
>>>> Nikki
>>>>  
>>>> Nikki Anguish   
>>>> Superintendent, Urban Forestry
>>>> Calgary Parks 
>>>> T 403.537.7550 |
>>>> Nikki.Anguish at Calgary.ca <mailto:Nikki.Anguish at Calgary.ca>
>>>> P.O Box 2100, Station M, Calgary, AB Canada T2P 2M5
>>>>  
>>>>  
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>>> 
>>>  
>> 
>>  
> 

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