[CANUFNET] Trees and boulevards

[Meagan Hanna]

Hi Ian,

Everyone loves a good debate!

Barlett's multi-year study comes up often to illustrate this point, but perhaps there might be some more recent research on this topic. If this is the case, I haven't run into it yet. Feel free tp share!

https://www.deeproot.com/blog/blog-entries/suspended-pavement-study-at-the-bartlett-tree-lab-year-9/

I can recommend an interesting site to follow up on over Google Street view, in front of Montreal's Saint-Josepth's Oratory along Queen Mary street, south side. A very busy, urban site.

The street was ripped up between 2007 and 2009. New tree pits were introduced and the municipality planted Accolate elms in tree pits at the main entrance in August 2008. Needless to say, not all of them have made it to 2021. Around the same time, in 2008, further west down the road, between the sidewalk and the parking lot, the property managers planted an alignment of trees as well. I believe they're Siberian elms. Not the same rate of development without a doubt! It's interesting to move through every year and see all of the work that has occurred around that site.

Across the street, in front of Collège Notre Dame, you can see some magnificent Kentucky Coffeetrees as well 🙂 Enjoy!

https://www.google.com/maps/@45.4934882,-73.6204576,3a,75y,128.15h,96.13t/data=!3m7!1e1!3m5!1s43HfNkuKULQ9tcK7SC5pGA!2e0!5s20090401T000000!7i16384!8i8192

I'm eager to see other examples!

All the best,
Meg


Meagan Hanna, MA.
meagan.hanna at mail.mcgill.ca
________________________________
From: CANUFNET <canufnet-bounces at list.web.net> on behalf of Ian Wilson via CANUFNET <canufnet at list.web.net>
Sent: September 28, 2021 3:59 PM
To: 'canufnet at list.web.net' <canufnet at list.web.net>
Cc: Ian Wilson <IWilson at kelowna.ca>
Subject: [CANUFNET] Trees and boulevards


All, we are having a bit of an internal debate about standards for local/residential roads and boulevards.  My observation is that trees that are planted in a boulevard behind a monolithic sidewalk (sidewalk up against the curb and planting area next to the property) generally do better. They have access to more soil volume in the front yard, they get more water and the boulevard is tidier since the homeowner treats it like part of their yard. Also fewer issues with roots lifting sidewalks. Some of our staff prefer the separated treed boulevard, for various reasons. Note, I’m not talking about busier roads where the trees in boulevards help to form a barrier from traffic.



We don’t have a lot of good examples here that directly show a comparison. Does anybody have some photos that might show the performance of trees on one side of the road in a separated boulevard, vs. trees on the other side behind the sidewalk?



Below is an example that doesn’t exactly show this, but it does show the value of soil volume, with the trees on the left side being able to access the lawn area behind the sidewalk, vs. the trees in “coffins” on the right. These are lindens planted at the same time.





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Ian Wilson
Infrastructure Operations Manager | City of Kelowna
250-469-8842 | iwilson at kelowna.ca<mailto:iwilson at kelowna.ca>
Submit a request for service on the go | kelowna.ca<http://kelowna.ca/>

I acknowledge that my workplace is located on the traditional, ancestral, unceded territory of the syilx/Okanagan people.


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