[MAIPC] Mugwort Control

[Nathan Hartshorne]

If I recall correctly, 2% is pretty standard for foliar applications, but I
just found a WVU page that suggests 3-4%.  Plenty of stuff works on mugwort
(I used 2, 4-D effectively as wll), it's just a matter of making sure one
gets around to it.  In a different attempt, I once had some engineer get us
to plow mugwort which failed miserably since the root fragments are happy
to grow back.


https://extension.wvu.edu/lawn-gardening-pests/weeds/mugwort

On Fri, Mar 27, 2020 at 5:45 PM Moore, April -FS <april.moore at usda.gov>
wrote:

> Do you find a particular percent solution of glyphosate better than
> another?
>
>
>
> Thanks.
>
>
>
> *From:* MAIPC [mailto:maipc-bounces at lists.maipc.org] *On Behalf Of *Nathan
> Hartshorne
> *Sent:* Friday, March 27, 2020 4:59 PM
> *To:* Gover Jr., Arthur Earl <aeg2 at psu.edu>
> *Cc:* MAIPC Listserve (maipc at lists.maipc.org) <maipc at lists.maipc.org>
> *Subject:* Re: [MAIPC] Mugwort Control
>
>
>
> We have a surprising range of sprout times from Virginia up to northern
> PA/jersey as well as other mountainous regions, so that does not surprise
> me yours hasn't sprouted.  Where I am in Philly it is a few inches tall
> already.  So there is certainly no problem waiting until yours has sprouted
> and then let it get a couple inches.
>
>
>
> I have used a few different herbicides including glyphosate and clearcast,
> but have no personal preference.  It takes a long time with each different
> one to get a preference, and I did not have that, so I have no particular
> recommendation.  My recommendation really was just about the strategy to
> start early.  Mugwort can take over a field if ignored, and spraying only
> in the fall after it seeds has not shown me any particular usefulness.  So
> if you hit it when it is young short, it is easy to avoid hitting other
> plants, helps suppress mugwort height, and does kill a fair percent of the
> plants.
>
>
>
> On Fri, Mar 27, 2020 at 4:05 PM Gover Jr., Arthur Earl <aeg2 at psu.edu>
> wrote:
>
> Hi, Nathan.
>
> Could you elaborate on the current stage of the mugwort your addressing.
> In Central PA, mugwort emergence is in the future.
>
> What material are you using?
>
> Thanks.
>
> Be well.
>
> Art
>
> Penn State Wildland Weed Management
> 116 ASI Building
> University Park, PA  16802
>
> (814) 863-9904
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> > On Mar 27, 2020, at 15:23, Nathan Hartshorne <nshartshorne at gmail.com>
> wrote:
> >
> > Hi All,
> >
> > I just wanted to say that in the past I have had success reducing
> mugwort invasions by spraying at this point of the year when it is still
> short and a lot of the natives still haven't even shown their sprouts.  Now
> I got maybe as little as 20% killed and the rest grew back, but that 20%
> was very helpful in thin areas.  Also, the mugwort that did resprout grew
> shorter and was significantly easier to manage later in the season when I
> hit it again.  If you have ever waded through a field of 5 ft tall mugwort
> trying to spray it with a backpack sprayer, it is not easy.  Anyways, just
> some advice.
> >
> > Best,
> > Nathan
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