<html><body><div style="font-family: arial, helvetica, sans-serif; font-size: 12pt; color: #000000"><div><a href="https://www.fs.fed.us/database/feis/plants/tree/ailalt/all.html">https://www.fs.fed.us/database/feis/plants/tree/ailalt/all.html</a>. Look under physiology. There are many references<br></div><div><a href="https://edis.ifas.ufl.edu/pdf%5Carchived%5CHS%5CHS186%5CHS186-11820230.pdf">https://edis.ifas.ufl.edu/pdf%5Carchived%5CHS%5CHS186%5CHS186-11820230.pdf</a>. Look at the last page. Maybe these researchers could be identified and asked about their findings<br data-mce-bogus="1"></div><div><br data-mce-bogus="1"></div><div><br></div><hr id="zwchr" data-marker="__DIVIDER__"><div data-marker="__HEADERS__"><b>From: </b>"Patricia Greenberg" <Patricia.Greenberg@fairfaxcounty.gov><br><b>To: </b>"drj11" <drj11@psu.edu>, "maipc" <maipc@lists.maipc.org><br><b>Sent: </b>Monday, April 4, 2022 10:10:38 AM<br><b>Subject: </b>Re: [MAIPC] Use of Tree of Heaven Mulch<br></div><div><br><style><!--
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<p class="MsoNormal">Hi,</p>
<p class="MsoNormal">Such great questions. Not sure if there is any research out there on this topic.
</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">I have only used mulch from invasive species as weed control in garden pathways. Pretty useful but I wouldn’t use it to mulch where I’d like native plants to grow just to be safe. I would love to see the results of a study on this. We are
in the process of taking down many Ailanthus trees these days in Fairfax County.
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<p class="MsoNormal"> </p>
<p class="MsoNormal">Warm wishes,</p>
<div>
<p class="MsoNormal"><b><span style="font-size:12pt;color:black"> </span></b></p>
<p class="MsoNormal"><b><span style="font-size:12pt;color:black">Patricia Pearl Greenberg</span></b></p>
<p class="MsoNormal"><span style="font-size:12pt;color:black">Invasive Management Area (IMA) Program Manager</span></p>
<p class="MsoNormal"><i><span style="font-size:12pt;color:black">Office: 703-324-8673</span></i></p>
<p class="MsoNormal"><i><span style="font-size:12pt;color:black">(She/Her/Hers)</span></i><i><span style="font-family:'arial' , sans-serif;color:#333333"></span></i></p>
<p class="MsoNormal"><i><span style="font-size:12pt;color:black"> </span></i></p>
<p class="MsoNormal"><i><span style="font-size:12pt;color:black"> </span></i></p>
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<p class="MsoNormal"> </p>
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<p class="MsoNormal"><b>From:</b> MAIPC <maipc-bounces@lists.maipc.org> <b>On Behalf Of
</b>Jackson, David Robert<br>
<b>Sent:</b> Monday, February 7, 2022 11:17 AM<br>
<b>To:</b> MAIPC Listserve <maipc@lists.maipc.org><br>
<b>Subject:</b> [MAIPC] Use of Tree of Heaven Mulch</p>
</div>
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<p class="MsoNormal"> </p>
<p class="MsoNormal"><span style="font-size:12pt">See question below. Does anyone have any information or knowledge on this subject? Thanks.</span></p>
<p class="MsoNormal"><span style="font-size:12pt"> </span></p>
<p class="MsoNormal"> </p>
<p class="MsoNormal"><span style="font-size:9pt;font-family:'arial' , sans-serif;color:#16325c;background:white">Ailanthus mulch</span></p>
<p class="MsoNormal"><span style="font-size:9pt;font-family:'arial' , sans-serif;color:#16325c;background:white">I had nine 30-40’ ailanthus trees cut down and mulched. I did not realize at the time that it is allelopathic. I am trying to re-grow a native Virginia
garden. Should I age this massive amount of mulch, or get rid of it? How long does its allelopathy last? Weeks? Months? Years?</span><span style="font-size:9pt;font-family:'arial' , sans-serif;color:#16325c"><br>
<span style="background:white">Thank you so much for your kind consideration.</span></span></p>
<p class="MsoNormal"><span style="font-size:9pt;font-family:'arial' , sans-serif;color:#16325c;background:white">Robin Allman</span></p>
<p class="MsoNormal"><a href="mailto:robinallman54@gmail.com" target="_blank" rel="nofollow noopener noreferrer"><span style="font-size:9pt;font-family:'arial' , sans-serif;color:#015ba7;background:white">robinallman54@gmail.com</span></a></p>
<p class="MsoNormal"><span style="font-size:9pt;font-family:'arial' , sans-serif;color:#16325c;background:white">(804) 714-5874</span></p>
<p class="MsoNormal"><span style="font-size:12pt"> </span></p>
<p class="MsoNormal"><span style="font-size:12pt"> </span></p>
<p class="MsoNormal"><span style="font-size:14pt;font-family:'arial' , sans-serif;color:#1f3864">Dave</span></p>
<p class="MsoNormal"><span style="font-size:9pt;font-family:'arial' , sans-serif;color:#323e4f"> </span></p>
<p class="MsoNormal"><span style="font-size:9pt;font-family:'arial' , sans-serif;color:#323e4f">David R. Jackson</span></p>
<p class="MsoNormal"><span style="font-size:9pt;font-family:'arial' , sans-serif;color:#323e4f">Forest Resources Educator</span></p>
<p class="MsoNormal"><b><span style="font-size:10pt;font-family:'arial black' , sans-serif;color:#323e4f">Penn State Extension-Centre County</span></b></p>
<p class="MsoNormal"><span style="font-size:9pt;font-family:'arial' , sans-serif;color:#323e4f">Willowbank Building, Room 322, 420 Holmes Street</span></p>
<p class="MsoNormal"><span style="font-size:9pt;font-family:'arial' , sans-serif;color:#323e4f">Bellefonte, PA 16823</span></p>
<p class="MsoNormal"><span style="font-size:9pt;font-family:'arial' , sans-serif"><a href="mailto:drj11@psu.edu" target="_blank" rel="nofollow noopener noreferrer">drj11@psu.edu</a> 814-355-4897(office)</span></p>
<p class="MsoNormal">Forests and Wildlife Extension: <a href="https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fextension.psu.edu%2Fforests-and-wildlife&data=04%7C01%7CPatricia.greenberg%40fairfaxcounty.gov%7Ce59d5db44375424ca47308d9ea5555dc%7Ca26156cb5d6f41729d7d934eb0a7b275%7C0%7C0%7C637798474802859096%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C2000&sdata=nMNiRhU7rtUcv8KY0CdwUgm8nHj8DC1aOdNYIA%2FP5fQ%3D&reserved=0" target="_blank" rel="nofollow noopener noreferrer">
https://extension.psu.edu/forests-and-wildlife</a> </p>
<p class="MsoNormal"> </p>
<p class="MsoNormal"><b>“Anything we can’t do forever is by definition unsustainable.”</b></p>
<p class="MsoNormal"><b><span style="font-family:'blackadder itc'">Sir David Attenborough</span></b><span style="font-family:'blackadder itc'"></span></p>
<p class="MsoNormal"> </p>
<p class="MsoNormal"> </p>
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