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Jake,<br>
<br>
I LOVE flaming invasives (especially with the ground as wet as it
is).. It is very cathartic. Feels like watching the wicked witch
melt. Of course the advantage is that perennials and most grasses
recover fairly quickly and no herbicides used.<br>
<br>
Rather than buy the pre assembled kit, I bought the the torch and an
Alice Pack frame separately. A 20 lb cylinder feels good (attach to
frame with gripper load straps) so no need to buy the 10 lb
cylinder. Saved about $90.<br>
<br>
Freaks out one of my neighbors, but he annoys me anyway. FWIW, I do
wear Nomex.<br>
<pre class="moz-signature" cols="72">Regards,
Dewey Clark,
<a class="moz-txt-link-freetext" href="http://www.historictimekeepers.com">http://www.historictimekeepers.com</a>
Omega Recognized Service Provider
WOSTEP Certified After Sales Service of Current Watches
WOSTEP Certified Micromechanics
Restoration of Vintage Timepieces
Precision Timing Specialist
Micromachining</pre>
<div class="moz-cite-prefix">On 7/13/2015 9:32 PM, Hughes, Jake
wrote:<br>
</div>
<blockquote
cite="mid:CAMnuNmMWWNUBLBiYypkoM01EXpaGqt1mmbJmTbGctkep+VK1yQ@mail.gmail.com"
type="cite">
<div dir="ltr">
<div>Lori,</div>
<div> </div>
<div>We have a pretty bad problem with Oriental lady's thumb
(Polygonum cespitosum, Persicaria longiseta) here at
Shenandoah National Park. Like the native PA smartweed, it
has pink flowers/fruit, but they're smaller, and the leaf
sheath around the stem (ocrea) is fringed with long hairs.
It's our second most widespread and abundant nonnative weed,
and is often found in near monocultures. Oriental lady's
thumb seems to really thrive and persist in mesic, higher
elevation sites in the park. At lower elevations it seems a
bit more ephemeral. </div>
<div> </div>
<div>Assuming your smartweed is confirmed as this or another of
the small handful of nonnative species, you're
correct--you won't find much guidance on dealing with it.
We've found it's easy to kill, but not very easy to kill
without collateral damage. A glyphosate product such as Rodeo
(54% glyphosate) can be used at low concentrations (0.5% has
been pretty consistently effective, 0.25% less so) on heavy
infestations. Weed whacking it close to the ground before
seed set can knock it back. In upland areas, preemergent
products (e.g. pendimethalin, prodiamine) can be useful, and
are probably your best option for avoiding damage to native
perennials. But these may not be an option if you're near a
stream. Contact herbicides such as pelargonic acid (e.g.
Scythe at 5 to 10% concentration) are also pretty effective,
if applied early and before rigid stems develop. Flaming with
a propane torch should work too, if you're into that.</div>
<div> </div>
<div>Since mowing probably leaves enough above-ground tissue for
the plants to rebound, I doubt it would effectively control
Oriental lady's thumb. And certainly if it's being mowed
after seed set, the seeds are being thrown far and wide. </div>
<div> </div>
<div>Hope this is somewhat helpful, should you need to deal with
this plant.</div>
<div> </div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Mon, Jul 13, 2015 at 6:13 PM, Lori
Bowes <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:lrbowes2@yahoo.com" target="_blank">lrbowes2@yahoo.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
<div
style="color:rgb(0,0,0);font-family:HelveticaNeue,Helvetica
Neue,Helvetica,Arial,Lucida
Grande,sans-serif;font-size:10px;background-color:rgb(255,255,255)">
<div><span>Hi. I get confused about smartweed/knotweed
but I can say that every time I have asked a
plant-knowledgeable person about our smartweed, they
felt it was the invasive type.</span></div>
<div><span></span><br>
</div>
<div dir="ltr"><span>I think in my haste to get this
posted before a Grounds meeting I relied on a google
entry that told me that PA smartweed was invasive so
I thought that was the one we have.</span></div>
<div dir="ltr"><span></span><br>
</div>
<div dir="ltr"><span>I guess I need to affirm that my
ocrea is not bristled.</span></div>
<div dir="ltr"><span></span><br>
</div>
<div dir="ltr"><span>Assuming ours is the invasive
species, if you have guidance on whether mowing is
worsening the problem, please let me know.</span></div>
<div dir="ltr"><span></span><br>
</div>
<div dir="ltr"><span>Thanks,</span></div>
<div dir="ltr"><span>Lori</span></div>
<div>
<div class="h5"> <br>
<div><br>
<br>
</div>
<div style="display:block">
<div style="font-family:HelveticaNeue,Helvetica
Neue,Helvetica,Arial,Lucida
Grande,sans-serif;font-size:10px">
<div style="font-family:HelveticaNeue,Helvetica
Neue,Helvetica,Arial,Lucida
Grande,sans-serif;font-size:16px">
<div dir="ltr"> <font face="Arial" size="2">
On Monday, July 13, 2015 4:40 PM, Art
Gover <<a moz-do-not-send="true"
href="mailto:aeg2@psu.edu"
target="_blank">aeg2@psu.edu</a>>
wrote:<br>
</font> </div>
<br>
<br>
<div>I like PA smartweed. It’s native and
charming and fills space. Sure about the
ID?<br>
<br>
Be well.<br>
<br>
Art<br>
<br>
Penn State Wildland Weed Management<br>
116 ASI Building<br>
University Park, PA 16802<br>
<br>
(814) 863-9904<br>
(814) 863-7043 FAX<br>
<a moz-do-not-send="true"
href="http://plantscience.psu.edu/wildland"
target="_blank">http://plantscience.psu.edu/wildland</a><br>
<br>
> On Jul 13, 2015, at 16:37, frazmo <<a
moz-do-not-send="true"
href="mailto:frazmo@gmail.com"
target="_blank">frazmo@gmail.com</a>>
wrote:<br>
> <br>
> Any thoughts out there in MAIPC land?
If possible, copy the asker, <a
moz-do-not-send="true"
href="mailto:lrbowes2@yahoo.com"
target="_blank">lrbowes2@yahoo.com</a>,
directly also as I'm not sure she's on our
list. Cheers, Steve Young<br>
> <br>
> ---------- Forwarded message ----------<br>
> From: "<a moz-do-not-send="true"
href="mailto:lrbowes2@yahoo.com"
target="_blank">lrbowes2@yahoo.com</a>
[NativePlantseast]" <<a
moz-do-not-send="true"
href="mailto:NativePlantseast@yahoogroups.com"
target="_blank">NativePlantseast@yahoogroups.com</a>><br>
> Date: Jul 13, 2015 12:34 PM<br>
> Subject: [NativePlantseast] Smartweed
management?<br>
> To: <<a moz-do-not-send="true"
href="mailto:NativePlantseast@yahoogroups.com"
target="_blank">NativePlantseast@yahoogroups.com</a>><br>
> Cc: <br>
> <br>
> <br>
> <br>
> <br>
> <br>
> My community has an abundance of
Polygonum pensylvanicum on a turf hillside
that abuts a stream (on the other side of
which is a wooded area) and a terraced
native plant area (with asters, goldenrods,
grasses, viburnums, violets, etc). The
Polygonum is thriving amongst the turf and
is constantly invading the native plant
terrace.<br>
> <br>
> <br>
> <br>
> We have some flexibility in how we
manage the turf hillside in terms of
mowing. Can anyone offer some thoughts or
guidance?<br>
> <br>
> <br>
> <br>
> I haven't found much on the web in the
way of guidance for this topic.<br>
> <br>
> <br>
> <br>
> Thanks,<br>
> <br>
> Lori<br>
> <br>
> Arlington, VA<br>
> <br>
> <br>
> __._,_.___<br>
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<br>
<br clear="all">
<br>
-- <br>
<div class="gmail_signature">Jake Hughes<br>
Lead Biological Science Technician<br>
Shenandoah National Park<br>
3655 US Hwy 211 E<br>
Luray, VA 22835<br>
<a moz-do-not-send="true" href="mailto:Jake_Hughes@nps.gov"
target="_blank">Jake_Hughes@nps.gov</a><br>
Office: 540-999-3500 ext 3492 <br>
Fax: 540-999-3697<br>
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