<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<meta name="Generator" content="Microsoft Word 15 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:"Segoe UI";
panose-1:2 11 5 2 4 2 4 2 2 3;}
@font-face
{font-family:"Arial Narrow";
panose-1:2 11 6 6 2 2 2 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman",serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
span.EmailStyle18
{mso-style-type:personal-reply;
font-family:"Calibri",sans-serif;
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="EN-CA" link="blue" vlink="purple">
<div class="WordSection1">
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Hi Alison,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">As someone who has been heavily involved in the work around Parliament Hill in Ottawa I can tell you that the predominant cultivar
(clone) used has been ‘Liberty’ and not ‘Accolade’ (at least in the case of the elms planted adjacent to the US Embassy not far from the hill). Like many elms developed in response to Dutch elm disease it seems they do have a tendency to form poor unions
(in particular with included bark). Ultimately of course this can lead to failure as the trees mature.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">On another recent project in Ottawa this was also an issue for a number of ‘Valley Forge’ trees, none of which were over 15cm in diameter.
From what I could tell in this instance they were victims of their own success - growing so rapidly that pruning couldn’t keep them in good form. It sounds as though your clients are experiencing the same issue.
<o:p></o:p></span></p>
<div>
<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">Andrew K. Boyd, R.P.F.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Consulting Urban Forester<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">IFS Associates Inc.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">P.O. Box 13593<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Ottawa, ON<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">K2K 1X6<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Tel: 613-839-0101<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Fax: 613-839-0114<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">www.ifsassociates.ca<o:p></o:p></span></p>
</div>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif"> CANUFNET [mailto:canufnet-bounces@list.web.net]
<b>On Behalf Of </b>Alison Bond via CANUFNET<br>
<b>Sent:</b> Tuesday, January 9, 2018 4:46 PM<br>
<b>To:</b> canufnet@list.web.net<br>
<b>Subject:</b> [CANUFNET] Elms and breakage<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div id="GroupWiseSection_1515533498000_ABOND@envision-tatham.com_6D9784A083F10047889340061400B217_">
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Segoe UI",sans-serif">All:<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Segoe UI",sans-serif"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Segoe UI",sans-serif">At a conference in Quebec City I learned that much of the areas around the parliament buildings were being planted with Accolade Elm with good success. After that conference
we started incorporating elms into our street tree planting plans. Accolade wasn't always available so there were often substitutions (Valley Forge, Princeton, Pioneer, Triumph.)<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Segoe UI",sans-serif"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Segoe UI",sans-serif">I have recently noticed that some of the elms (when reaching about 15.0 cm dbh) are starting to break apart and large branches are failing. Many of these elms are vigorous
growers and municipalities haven't been able to keep up with pruning to keep the form strong.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Segoe UI",sans-serif"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Segoe UI",sans-serif">Has anyone else noticed this predisposition to breakage?
<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Segoe UI",sans-serif"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Segoe UI",sans-serif">Thanks.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Segoe UI",sans-serif">Alison<o:p></o:p></span></p>
</div>
<p class="MsoNormal" style="margin-bottom:3.75pt"><span style="font-size:10.0pt;font-family:"Segoe UI",sans-serif"><br>
<br>
</span><span style="font-size:10.0pt;font-family:"Arial Narrow",sans-serif"><o:p></o:p></span></p>
<div>
<p class="MsoNormal" style="margin-bottom:3.75pt"><span style="font-size:10.0pt;font-family:"Calibri",sans-serif">Alison Bond </span><strong><span style="font-size:7.5pt;font-family:"Calibri",sans-serif;color:gray">BSc MSc BLA OALA CSLA</span></strong><span style="font-size:10.0pt;font-family:"Arial Narrow",sans-serif"><o:p></o:p></span></p>
<div>
<p class="MsoNormal" style="margin-bottom:3.75pt"><strong><span style="font-size:7.5pt;font-family:"Calibri",sans-serif;color:gray">Landscape Architect and Certified Arborist</span></strong><span style="font-size:10.0pt;font-family:"Arial Narrow",sans-serif"><o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal" style="margin-bottom:3.75pt"><span style="font-size:10.0pt;font-family:"Arial Narrow",sans-serif"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal" style="margin-bottom:3.75pt"><strong><span style="font-size:10.0pt;font-family:"Calibri",sans-serif">ENVISION-TATHAM Inc.</span></strong><strong><span style="font-size:7.5pt;font-family:"Calibri",sans-serif"> </span></strong><span style="font-size:7.5pt;font-family:"Calibri",sans-serif">
</span><span style="font-size:10.0pt;font-family:"Arial Narrow",sans-serif"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-bottom:3.75pt"><span style="font-size:7.5pt;font-family:"Calibri",sans-serif">115 Sandford Fleming Drive, Suite 200, Collingwood, L9Y 5A6</span><span style="font-size:10.0pt;font-family:"Arial Narrow",sans-serif"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-bottom:3.75pt"><span style="font-size:7.5pt;font-family:"Calibri",sans-serif;color:fuchsia"><a href="mailto:abond@envision-tatham.com">abond@envision-tatham.com</a></span><span style="font-size:7.5pt;font-family:"Calibri",sans-serif">
I Tel: 705.445.0422 I Fax: 705.444.2327 I Cell: 705.994.2059 I </span><span style="font-size:10.0pt;font-family:"Arial Narrow",sans-serif"><a href="http://www.envision-tatham.com"><span style="font-size:7.5pt;font-family:"Calibri",sans-serif">www.envision-tatham.com</span></a><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-bottom:3.75pt"><span style="font-size:10.0pt;font-family:"Calibri",sans-serif"> </span><span style="font-size:10.0pt;font-family:"Arial Narrow",sans-serif"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-bottom:3.75pt"><span lang="EN-US" style="font-size:8.0pt;font-family:"Calibri",sans-serif;mso-fareast-language:EN-US">This email may contain confidential and/or privileged information for the sole use of the intended recipient.
Any review or distribution by others is strictly prohibited. If you have received this email in error, please contact the sender and delete all copies.</span><span style="font-size:10.0pt;font-family:"Arial Narrow",sans-serif"><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-bottom:3.75pt"><span style="font-size:10.0pt;font-family:"Arial Narrow",sans-serif"><o:p> </o:p></span></p>
</div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Segoe UI",sans-serif"><o:p> </o:p></span></p>
</div>
</div>
</body>
</html>