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</o:shapelayout></xml><![endif]--></head><body lang=EN-CA link="#0563C1" vlink="#954F72" style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal><span style='mso-fareast-language:EN-US'>Sounds like salt accumulating in the soil. Do the soil cells have good drainage built in? I know of a project here in Toronto where the drainage system wasn’t built properly so the salty water accumulated in the system and didn’t drain away as planned.<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><div><p class=MsoNormal>Stephen Smith<o:p></o:p></p><p class=MsoNormal>Urban Forest Associates<o:p></o:p></p><p class=MsoNormal>Urban Forestry & Ecological Restoration<o:p></o:p></p><p class=MsoNormal>www.ufora.ca<o:p></o:p></p><p class=MsoNormal>Office/fax 416-423-3387<o:p></o:p></p><p class=MsoNormal>Cell 416-707-2164<o:p></o:p></p></div><p class=MsoNormal><span style='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 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US>From:</span></b><span lang=EN-US> CANUFNET <canufnet-bounces@list.web.net> <b>On Behalf Of </b>Alison Bond via CANUFNET<br><b>Sent:</b> June 3, 2022 9:27 AM<br><b>To:</b> Canadian Urban Forest Network <canufnet@list.web.net><br><b>Cc:</b> Alison Bond <abond@envision-tatham.com><br><b>Subject:</b> [CANUFNET] Soil Cells, Salt, & Poor Leaf Expansion<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span lang=EN-US>Hello CANUFNET,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>I’m wondering whether anyone has come across this. We have two streetscape projects (different municipalities) that include soil cells installed over the last two years. The Freeman Maples, in particular, have been unsuccessful and typically leaf expansion begins and then stops. The very small leaves turn brown, as though scorched. On one project, Freeman Maples were also planted in sod and the trees are fine.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Both projects were installed by the same contractor and I believe they used soil from the same source. In both projects, stormwater is directed to the soil cells from the catchbasins. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>The contractor has indicated that it is the high salt level in the soil (in the soil cells) that is causing the trees to fail. They have had the soil tested (probably at the tree pit) and it is high in salt. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>That said, Freeman Maples have been used successfully in soil cells on other projects.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>I haven’t seen this symptom attributed to soil salt… where the buds break and the leaves start to expand, but then stop. Is this a symptom of high salinity or is this perhaps something else, exacerbated by less than ideal soil salt levels? I’ve had someone suggest maybe verticillium. Any ideas?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US><img width=419 height=445 style='width:4.3666in;height:4.6333in' id="Picture_x0020_1" src="cid:image001.png@01D87760.FA9EB360"><img width=343 height=447 style='width:3.575in;height:4.6583in' id="Picture_x0020_2" src="cid:image002.png@01D87760.FA9EB360"></span><span lang=EN-US><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Thank you.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Regards,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Alison<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal style='margin-bottom:3.75pt'><span lang=EN-US style='font-size:10.0pt'>Alison Bond </span><b><span lang=EN-US style='font-size:7.5pt;color:gray'>BSc MSc BLA OALA CSLA</span></b><span lang=EN-US><o:p></o:p></span></p><p class=MsoNormal style='margin-bottom:3.75pt'><b><span lang=EN-US style='font-size:7.5pt;color:gray'>Landscape Architect and Certified Arborist</span></b><span lang=EN-US><o:p></o:p></span></p><p class=MsoNormal style='margin-bottom:3.75pt'><span lang=EN-US style='font-size:10.0pt;font-family:"Arial Narrow",sans-serif'> </span><span lang=EN-US><o:p></o:p></span></p><p class=MsoNormal style='margin-bottom:3.75pt'><b><span lang=EN-US style='font-size:10.0pt'>ENVISION-TATHAM Inc.</span></b><span lang=EN-US><o:p></o:p></span></p><p class=MsoNormal style='margin-bottom:3.75pt'><span lang=EN-US style='font-size:7.5pt'>115 Sandford Fleming Drive, Suite 200, Collingwood, L9Y 5A6</span><span lang=EN-US><o:p></o:p></span></p><p class=MsoNormal style='margin-bottom:3.75pt'><span lang=EN-US style='font-size:7.5pt;color:fuchsia'><a href="mailto:abond@envision-tatham.com"><span style='color:purple'>abond@envision-tatham.com</span></a></span><span lang=EN-US style='font-size:7.5pt'> I Tel: <a href="tel:7054450422"><span style='color:purple'>705.445.0422</span></a> I Fax: <a href="tel:7054442327"><span style='color:purple'>705.444.2327</span></a> I Cell: <a href="tel:7059942059"><span style='color:purple'>705.994.2059</span></a> I </span><span lang=EN-US 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;color:purple'>www.envision-tatham.com</span></a></span><span lang=EN-US><o:p></o:p></span></p><p class=MsoNormal style='margin-bottom:3.75pt'><span lang=EN-US style='font-size:8.0pt'>This email may contain confidential and/or privileged information for the sole use of the intended recipient. 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