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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D">Oliver,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D">In the Pacific NW ISA Chapter we gave staghorn sumac a rating of 55. In my area (interior British Columbia) sumac is somewhat invasive and I would tend to
rate it lower, although I have seen it used successfully for stabilizing steep banks and it also seems to be very drought resistant.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D">Acer negundo has a bad reputation for good reasons, but there is a clone of Acer negundo that we have experimented with in the last five years – Acer negundo
‘Sensation’. It’s a male cultivar (no seeds or boxelder bugs), it has an attractive reddish leaf colour (year round) and is a medium size tree. It is relatively fast growing so I suspect in the long run it might have some of the weak wood and decay issues
as the Acer negundo species, but in the right place I think it might be a good tree choice. I have been impressed with this tree in parking lot islands and in sidewalk cutouts where there is very limited soil and harsh conditions that would kill most trees.
At a Canadian Tire parking lot near my house I have watched some of these trees over the last 8 years growing in very small volumes of soil and as a result they are growing quite slowly, but they don’t seem to be showing any symptoms of decline or stress and
they aren’t lifting any asphalt (not yet anyway) in spite of the lack of any root barriers.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D">One tree that I’ve been impressed with as an American elm alternative is Zelkova serrata. We don’t have too many of them but they seem to be very vigorous
and well adapted to boulevards and difficult sites, and quite attractive.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D">I don’t think we’ve ever paid a nursery / landscaper for a quote – I would expect they would offer free quotes if they want our business.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D">Ian Wilson<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D">City of Kelowna<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> canufnet-bounces@list.web.net [mailto:canufnet-bounces@list.web.net]
<b>On Behalf Of </b>Oliver Reichl<br>
<b>Sent:</b> Monday, June 04, 2012 7:18 AM<br>
<b>To:</b> Canadian Urban Forest Network<br>
<b>Subject:</b> [CANUFNET] CTLA appraisals in Ontario<o:p></o:p></span></p>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Greetings:<o:p></o:p></p>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal">I'm doing a large appraisal project that has brought up a couple of interesting issues. I'm keen to hear your opinions.<o:p></o:p></p>
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<div>
<p class="MsoNormal"><o:p> </o:p></p>
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<div>
<p class="MsoNormal">1) the Ontario supplement does not contain a species rating for Staghorn sumac,
<i>Rhus typhina</i>. What would you consider the best alternative to use for a species rating? (I have one in mind ... just curious to hear what others may have used and why).<o:p></o:p></p>
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<p class="MsoNormal">2) <i>Acer negundo</i> (crapwood) and <i>Ulmus americana</i> (disease-prone) are not available in the marketplace. What would you consider the best alternatives to use for replacement plant material? (Again, I have ones in mind ... but
curious to hear what others suggest or may have used and why).<o:p></o:p></p>
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<p class="MsoNormal">3) quotes for replacement trees and their delivery/installation are an integral part of the valuations. How much, if anything, would you pay a nursery or landscaping firm for a quote?<br clear="all">
<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">Looking forward to any replies,<br>
<br>
Oliver K. Reichl, B.E.S.(Hons)<br>
Consulting Arborist-Ecologist<br>
ISA Certified Arborist #ON-1178A<br>
18 Larue Mills Rd.<br>
1000 Islands, ON K0E 1R0<br>
Tel: 613-923-8833<br>
Email: <a href="mailto:careofthetrees@gmail.com" target="_blank">careofthetrees@gmail.com</a><br>
Web: <a href="http://www.oliverkilian.com/treecare" target="_blank">www.oliverkilian.com/treecare</a><o:p></o:p></p>
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