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<p class="MsoNormal">Hi,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">One key point to add onto the recommendations listed below is to ask that herbicide be applied immediately after cutting. I know this is hard to do with a large tree removal but the herbicide wants to be applied with a minute or so of the
cutting (important detail to include in the contract or to staff). We have had success with both triclopyr and glyphosate for cut stump treatments. However, using an oil-based herbicide treatment would makes sense in case the trees are being removed during
the growing season instead of fall/winter since it allows the herbicide to stick longer on the stump for better absorption. Just my two cents.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Warm wishes,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="vertical-align:baseline"><b><span style="color:#1F4E79;mso-ligatures:standardcontextual">Patricia (Pa-tree-syah) Greenberg<o:p></o:p></span></b></p>
<p class="MsoNormal" style="vertical-align:baseline"><span style="color:#1F4E79;mso-ligatures:standardcontextual">Community and Urban Forest Coordinator</span><span style="font-family:"Forte Forward";color:#1F4E79;mso-ligatures:standardcontextual"><o:p></o:p></span></p>
<p class="MsoNormal" style="vertical-align:baseline"><span style="mso-ligatures:standardcontextual"><a href="https://www.fairfaxcounty.gov/publicworks/trees/forest-pests"><span style="color:#0563C1">Forest Pest Branch</span></a><span style="color:#1F4E79">,
</span><a href="https://www.fairfaxcounty.gov/publicworks/trees/forest-pests"><span style="color:#0563C1">Urban Forest Management Division</span></a></span><span style="font-family:"Forte Forward";color:#1F4E79;mso-ligatures:standardcontextual"><o:p></o:p></span></p>
<p class="MsoNormal" style="vertical-align:baseline"><span style="color:#1F4E79;mso-ligatures:standardcontextual">Dept. of Public Works and Environmental Services, Fairfax County </span><span style="font-family:"Segoe UI",sans-serif;mso-ligatures:standardcontextual"><o:p></o:p></span></p>
<p class="MsoNormal" style="vertical-align:baseline"><span style="font-size:4.0pt;mso-ligatures:standardcontextual"> </span><span style="font-size:9.0pt;font-family:"Segoe UI",sans-serif;mso-ligatures:standardcontextual"><o:p></o:p></span></p>
<p class="MsoNormal" style="vertical-align:baseline"><b><span style="font-size:9.0pt;color:#1F4E79;mso-ligatures:standardcontextual">Phone:</span></b><span style="font-size:9.0pt;color:#1F4E79;mso-ligatures:standardcontextual">
</span><span style="font-size:9.0pt;mso-ligatures:standardcontextual">703-324-8673 </span><span style="font-size:9.0pt;font-family:"Segoe UI",sans-serif;mso-ligatures:standardcontextual"><o:p></o:p></span></p>
<p class="MsoNormal" style="vertical-align:baseline"><span style="font-size:9.0pt;mso-ligatures:standardcontextual">ISA Certified Arborist, MA-6067A </span><span style="font-size:9.0pt;font-family:"Segoe UI",sans-serif;mso-ligatures:standardcontextual"><o:p></o:p></span></p>
<p class="MsoNormal" style="vertical-align:baseline"><span style="font-size:9.0pt;mso-ligatures:standardcontextual">Tree Risk Assessment Qualified (TRAQ) </span><span style="font-size:9.0pt;font-family:"Segoe UI",sans-serif;mso-ligatures:standardcontextual"><o:p></o:p></span></p>
<p class="MsoNormal" style="vertical-align:baseline"><span style="font-size:9.0pt;mso-ligatures:standardcontextual">(She/Her/Hers) </span><span style="font-size:9.0pt;font-family:"Segoe UI",sans-serif;mso-ligatures:standardcontextual"><o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b>From:</b> MAIPC <maipc-bounces@lists.maipc.org> <b>On Behalf Of
</b>Patrick D. Kelly<br>
<b>Sent:</b> Monday, August 7, 2023 2:43 PM<br>
<b>To:</b> Ossi, Damien (DOEE) <damien.ossi@dc.gov>; Elizabeth Mizell <beth@blueridgeprism.org><br>
<b>Cc:</b> MAIPC Listserve <maipc@lists.maipc.org><br>
<b>Subject:</b> Re: [MAIPC] Basal oil on ailanthus as stump treatment<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">Being a one-man "Shop" both in PRE-retirement municipal govt AND now POST-retirement (2010 business started PT/retirement FT effective 2018) operating my own invasive plant
control business...oil-based basal bark application has been my cost/time efficient and go-to remedy for Ailanthus. Trunk cutting mature ailanthus trees is the Looney Tunes "don't EVER push the red button" equivalent in invasive plant management. The process
is made easier by the use of pre-mixed RTU (Ready To Use) oil-triclopyr herbicide product Pathfinder II. I add red-dye forestry Base-Oil to the mix as a tracer colorant to ensure applications are even and well distributed. Got HUGE Ailanthus? I recall attending
an Invasive Plant Control Inc. workshop MANY years ago at Ft. Detrich, MD where they demonstrated the greater the trunk diameter, the higher UP the trunk was treated (painted). IPC Inc. lamented that on the largest diameter trees a followup application may
be needed the next year to seal the deal. I've found some sprayer application methods cumbersome and instead opted for brushes, sponges or small paint rollers "on-a-stick" i.e. mounted on broomsticks or long house painting applicators (the small rollers can
screw into the house panting extension handles). You want to apply a good oil/herbicide bark soak application; pretend you are painting a wall... BUT not to the point of runoff or drip down to the soil. The oil will be readily absorbed through the thin Ailanthus
bark taking the herbicide into the tree's vascular system.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">I'm currently using this Pathfinder II method to address invasive Ailanthus at Adkins Arboretum, Ridgely MD, on the Eastern Shore as part of a corporate sponsorship. Spring
2023 results at isolated groves (post trunk cutting) have been extremely successful.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">Hope this helps.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">Patrick D. Kelly, Principal and Horticulturist<o:p></o:p></span></p>
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<p style="margin-bottom:0in"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">PDK Horticultural, LLC Phragmites and Invasive Plant Control Services<o:p></o:p></span></p>
<p style="margin-bottom:0in"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">301 Hope Road<o:p></o:p></span></p>
<p style="margin-bottom:0in"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">Centreville, Md 21617<o:p></o:p></span></p>
<p style="margin-bottom:0in"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif">443-262-2079 mobile<o:p></o:p></span></p>
<p style="margin-bottom:0in"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif"><a href="mailto:pkelly.licensetokill@gmail.com" target="_blank">pkelly.licensetokill@gmail.com</a><o:p></o:p></span></p>
<p style="margin-bottom:0in"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif"><a href="https://pdkhorticultural.com/" target="_blank">https://</a><a href="https://pdkhorticultural.com/" target="_blank">PDKH</a><a href="https://pdkhorticultural.com/" target="_blank">orticultural.com</a><o:p></o:p></span></p>
<p style="margin-bottom:0in"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif"><a href="https://www.facebook.com/PDKHorticulturalLLC" target="_blank">https://www.facebook.com/PDKHorticulturalLLC</a><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A">On Monday, August 7, 2023 at 11:59:29 AM EDT, Elizabeth Mizell <<a href="mailto:beth@blueridgeprism.org">beth@blueridgeprism.org</a>> wrote:
<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:#26282A">If the timing works, you might consider this strategy recommended by Penn State Extension:<o:p></o:p></span></p>
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<p class="MsoNormal"><i><span style="font-size:13.5pt;font-family:"Arial",sans-serif;color:#1F212E">If cutting tree-of-heaven for immediate safety reasons, do so and treat the stump. However, cut stump herbicide applications are not recommended because they
do not provide effective control of roots. Stump treatments will keep the stump free of sprouts, but they will not prevent root suckering. When tree removal is necessary, it is best to treat with one of the above-mentioned herbicide applications first, wait
for symptoms to develop (generally 30 days), and then cut.</span></i><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:#26282A"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:#26282A"><a href="https://extension.psu.edu/tree-of-heaven" target="_blank">https://extension.psu.edu/tree-of-heaven</a><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"new serif",serif;color:black">_______________________________________</span><span style="font-size:12.0pt;font-family:"Arial",sans-serif;color:#26282A"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:13.5pt;font-family:"Arial",sans-serif;color:black">Elizabeth Anne Mizell
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Executive Director | Blue Ridge PRISM</span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><a href="mailto:beth@blueridgeprism.org" target="_blank">beth@blueridgeprism.org</a> </span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><a href="https://blueridgeprism.org/" target="_blank">Blue Ridge PRISM</a> is a partnership for regional invasive species management in Virginia.</span><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A">On Mon, Aug 7, 2023 at 10:50 AM Ossi, Damien (DOEE) <<a href="mailto:damien.ossi@dc.gov" target="_blank">damien.ossi@dc.gov</a>> wrote:<o:p></o:p></span></p>
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<p class="yiv9548335679msonormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A">Hi MAIPC members,<o:p></o:p></span></p>
<p class="yiv9548335679msonormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"> <o:p></o:p></span></p>
<p class="yiv9548335679msonormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A">Does anyone use oil-based triclopyr rather than water-based on ailanthus as a stump-cut treatment? We’re looking to remove a large number of ailanthus
in DC before the spotted lanternflies arrive in force, and the vendor is proposing to do a stump-cut treatment with triclopyr. I want to recommend that they use Garlon-4 or equivalent rather than Garlon-3a or equivalent, because the herbicide can be applied
to both the sapwood on the stump and the bark on base of the stump. But I also saw a study from Italy that indicated that glyphosate is better for stump-cut treatment of ailanthus.<o:p></o:p></span></p>
<p class="yiv9548335679msonormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"> <o:p></o:p></span></p>
<p class="yiv9548335679msonormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A">The trees must be removed at the time of treatment, so using hack-and-squirt or typical basal bark treatments won’t fly. Any advice from the membership?<o:p></o:p></span></p>
<p class="yiv9548335679msonormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"> <o:p></o:p></span></p>
<p class="yiv9548335679msonormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A">Thanks,<o:p></o:p></span></p>
<p class="yiv9548335679msonormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A">Damien
<o:p></o:p></span></p>
<p class="yiv9548335679msonormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"> <o:p></o:p></span></p>
<p class="yiv9548335679msonormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"> <o:p></o:p></span></p>
<p class="yiv9548335679msonormal"><b><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A">Damien P. Ossi</span></b><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><o:p></o:p></span></p>
<p class="yiv9548335679msonormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A">Wildlife Biologist<o:p></o:p></span></p>
<p class="yiv9548335679msonormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A">Fisheries & Wildlife Division<o:p></o:p></span></p>
<p class="yiv9548335679msonormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A">Department of Energy & Environment<o:p></o:p></span></p>
<p class="yiv9548335679msonormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A">Government of the District of Columbia<o:p></o:p></span></p>
<p class="yiv9548335679msonormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A">1200 First Street NE, 5th Floor<o:p></o:p></span></p>
<p class="yiv9548335679msonormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A">Washington, DC 20002<o:p></o:p></span></p>
<p class="yiv9548335679msonormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A">(202) 741-0840<o:p></o:p></span></p>
<p class="yiv9548335679msonormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"><a href="mailto:damien.ossi@dc.gov" target="_blank">damien.ossi@dc.gov</a><o:p></o:p></span></p>
<p class="yiv9548335679msonormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Helvetica",sans-serif;color:#26282A">_______________________________________________<br>
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