[MAIPC] Fwd: WEED ALERT | Japanese Stiltgrass

Thu Jul 15 07:40:00 PDT 2021

Here are some more guidelines:
*Foliar Spray:*  Apply a recommended herbicide before stiltgrass flowers
and sets seed, July - early September. Grass selective herbicides are most
effective. See Virginia Department of Forestry Guidelines
<https://blueridgeprism.us14.list-manage.com/track/click?u=14f106d040bc4a19e9b83a704&id=1347c58e7c&e=bf80900bf7>
 or A Management Guide for Invasive Plants in Southern Forests
<https://blueridgeprism.us14.list-manage.com/track/click?u=14f106d040bc4a19e9b83a704&id=54b76ac96c&e=bf80900bf7>
for
specific herbicide recommendations.
Rick

On Thu, Jul 15, 2021 at 7:48 AM Patrick D. Kelly <
pkelly.licensetokill at yahoo.com> wrote:

> "I would also remind everyone that if you use a product, such as vinegar,
> to purposely kill an organism then you have used that product as a
> pesticide. As such, you are using an unregistered product that is in
> violation of FIFRA. In other words, you are violating a federal law and you
> are subject to prosecution there of." Rick
>
> Not only Federal Law, but also the State of Maryland Pesticide
> Applicator's Law. As a commercial applicator that
> carries/offers/studies/uses organic and "natural" products in my toolbox,
> Maryland Law under the Department of Agriculture requires the posting of
> the "dreaded yellow warning sign" even for applications of so-called
> natural as well as Certified Organic products since they are classified,
> promoted and sold as KILLING herbicidal agents. Most of these products also
> have the HIGHEST contact toxicity for both concentrates and final use
> solutions (compared to synthetic herbicides) in my toolbox capable of
> serious burns or blindness..."natural" concentrated chemicals and acids
> that burn through plant tissues while wet, or dried residues, having the
> same or similar potential threat to children and pets in the intended
> target application areas.
>
> Patrick D. Kelly, Horticulturist
>
> PDK Horticultural, LLC Phragmites and Invasive Plant Control Services
>
> 301 Hope Road
>
> Centreville, Md 21617
>
> 443-262-2079 mobile
>
> https:// <https://pdkhorticultural.com/>PDKH
> <https://pdkhorticultural.com/>orticultural.com
> <https://pdkhorticultural.com/>
> https://www.facebook.com/PDKHorticulturalLLC
>
>
>
> On Wednesday, July 14, 2021, 7:44:46 PM EDT, Richard Johnstone <
> ivmpartners at gmail.com> wrote:
>
>
> I would also remind everyone that if you use a product, such as vinegar,
> to purposely kill an organism then you have used that product as a
> pesticide. As such, you are using an unregistered product that is in
> violation of FIFRA. In other words, you are violating a federal law and you
> are subject to prosecution there of.
> Rick
>
> Sent from my iPhone
>
> On Jul 14, 2021, at 4:24 PM, Randall, Johnny <jrandall at email.unc.edu>
> wrote:
>
> 
>
> All: I have read over and over that vinegar (and any of the suggested
> additives such as salt, dishwashing liquid, etc.) are far more toxic than
> most herbicides – particularly glyphosate. Vinegar is toxic to soil
> microorganisms including invertebrate larvae. A ½% (0.005) glyphosate
> solution works great for us at the NC Botanical Garden, which we have used
> for 20 years.
>
>
>
> Johnny Randall
>
>
>
> Johnny Randall, PhD
>
> Director of Conservation
>
> North Carolina Botanical Garden
>
> CB 3375
>
> University of North Carolina-Chapel Hill
>
> Chapel Hill NC 27599
>
> ncbg.unc.edu
>
> C – 919-923-0100
>
> W – 9191-962-2380
>
>
>
> <image001.jpg>
>
>
>
>
>
>
>
> *From:* MAIPC <maipc-bounces at lists.maipc.org> *On Behalf Of *Richard
> Gardner
> *Sent:* Wednesday, July 14, 2021 10:19 AM
> *To:* MAIPC Listserve <maipc at lists.maipc.org>; MNPS Board <
> board at mdflora.org>; Jil Swearingen <jilswearingen at gmail.com>
> *Subject:* Re: [MAIPC] Fwd: WEED ALERT | Japanese Stiltgrass
>
>
>
> I had really good results when spraying Japanese Stiltgrass with
> horticultural vinegar (30%)on a trail I use a lot. I used a standard
> backpack sprayer. The horticultural vinegar looks like it works well on
> grasses in general.
>
>
>
>
>
>                                                  Richard Gardner
>
>
>
> On Tuesday, July 13, 2021, 11:09:12 PM EDT, Jil Swearingen <
> jilswearingen at gmail.com> wrote:
>
>
>
>
>
> Please see email below.
>
> Thanks,
>
> Jil
>
>
>
> ---------- Forwarded message ---------
> From: *Blue Ridge PRISM* <info at blueridgeprism.org>
> Date: Fri, Jul 9, 2021 at 5:42 PM
> Subject: WEED ALERT | Japanese Stiltgrass
> To: Jil Swearingen <jilswearingen at gmail.com>
>
>
>
> Identify and control Japanese stiltgrass now!
>
> View this email in your browser
> <https://mailchi.mp/blueridgeprism/weed-alert-japanese-stiltgrass?e=bf80900bf7>
>
>
> <https://blueridgeprism.us14.list-manage.com/track/click?u=14f106d040bc4a19e9b83a704&id=87fe4a6d35&e=bf80900bf7>
>
>
>
> - WEED ALERT -
>
> ACT NOW ON JAPANESE STILTGRASS
>
>
>
> Image: Japanese stiltgrass.  Photo credit: Chuck Bargeron, University of
> Georgia
>
>
>
> Now is the time to begin controlling *Japanese stiltgrass, **Microstegium
> vimineum, *in the weeks just before it flowers and sets seed. A native of
> Asia, Japanese stiltgrass was once used as packing material for
> transporting porcelain-- this is probably how it was introduced to North
> America. The earliest report of Japanese stiltgrass in the United States
> was in Knoxville, Tennessee in 1919. Currently, abundant amounts of
> Japanese stiltgrass can be found in most of the eastern United States. In
> Virginia, it is present in every county
> <https://blueridgeprism.us14.list-manage.com/track/click?u=14f106d040bc4a19e9b83a704&id=8a6a21f4f7&e=bf80900bf7>
> .
>
> A single Japanese stiltgrass plant can produce up to 1,000 seeds that can
> remain viable in the soil for at least three years. The seeds are then
> spread by animals, rain runoff, soil, and even human foot traffic. Taking
> action now will help minimize seed production and prevent stiltgrass from
> achieving a wider footprint.
>
>
>
>
>
> JAPANESE STILTGRASS THREATENS
> NATIVE PLANTS AND FORESTS
>
>
>
> Japanese stiltgrass can spread quickly into a dense mat invading disturbed
> areas like floodplain forests and openings in the forest canopy. It moves
> readily along trails and roads. White-tailed deer especially avoid this
> plant increasing the browsing pressure on native plants. This leaves the
> stiltgrass to invade the ensuing open spaces, thereby posing a potential
> threat to the future of our forests. Japanase stiltgrass also increases the
> threat of intense forest fires due to the thick mats of dried leaves and
> stems present in the fall.
>
> Moreover, because infestations of Japanese stiltgrass change the habitat
> of the forest floor, it becomes less hospitable for some ground-nesting
> bird species and even the American toad. Left alone, Japanese stiltgrass
> can overtake native plant life and vegetation in just three to five years.
>
> Learn more:
> *Deer prefer native plants leaving lasting damage on forests*
> <https://blueridgeprism.us14.list-manage.com/track/click?u=14f106d040bc4a19e9b83a704&id=a6950d9882&e=bf80900bf7>
> *More wolf spiders feasting on American toads due to invasive grass*
> <https://blueridgeprism.us14.list-manage.com/track/click?u=14f106d040bc4a19e9b83a704&id=054d7c6ba3&e=bf80900bf7>
>
>
>
>
>
> Image: A forest invaded by Japanese stiltgrass.  Photo credit: USDA Forest
> Service
>
>
>
>
>
> APPEARANCE
>
>
> Japanese stiltgrass is a warm season, annual grass with shallow roots. It
> is found across a variety of light and moisture conditions. Plant height
> varies from 6 inches to 4 feet tall depending upon the growing conditions
> and grows tallest in moist and sunny environments. Taller plants will
> typically lie flat along the ground or propped up against other vegetation.
> Stiltgrass has pale green, lance-shaped leaves that are between one to
> three inches long. The leaves alternate along an often droopy stem. Look
> for a silvery main vein running just off center of each leaf.
>
>
>
>
>
> Image:  Japanese stiltgrass leaves feature an off center silverly main
> vein.  Photo credit:  West Virginia Extension Service
>
>
>
>
>
> CONTROL
>
>
> *Hand-pull:*  Small patches in garden beds or elsewhere can be easily
> hand-pulled because of Japanese stiltgrass' shallow root system. Pulling
> when the soil is moist will speed the process.
>
> *Mow:  *For larger areas of stiltgrass, use a mower set very low and cut
> as close to the ground as possible, so no green is left on the plant. This
> decreases the chance of it resprouting. If using a string-trimmer, hold the
> trimmer at a slight downward angle so the string digs about a quarter-inch
> into the ground to sever roots from stems. Leave clippings from mowed or
> cut stiltgrass in place to die if seeds have not formed. *Timing is key
> here. Mow when the plants are just about to flower, August - September. *
>
> *Foliar Spray:*  Apply a recommended herbicide before stiltgrass flowers
> and sets seed, July - early September. Grass selective herbicides are most
> effective. See Virginia Department of Forestry Guidelines
> <https://blueridgeprism.us14.list-manage.com/track/click?u=14f106d040bc4a19e9b83a704&id=1347c58e7c&e=bf80900bf7>
> or A Management Guide for Invasive Plants in Southern Forests
> <https://blueridgeprism.us14.list-manage.com/track/click?u=14f106d040bc4a19e9b83a704&id=54b76ac96c&e=bf80900bf7>
> for specific herbicide recommendations.
>
>
> *Notes:*
>
> Be aware that although you have eliminated this year’s seed production
> there is still seed in the soil that can germinate. As a result, you will
> need to employ monitoring and management techniques for a number of
> years. It is worth it!
>
> Always follow all herbicide label directions and wear personal protective
> equipment (PPE) per label instructions.
>
> Take care to avoid herbicide contact with desirable plants.
>
>
> Download our fact sheet
> <https://blueridgeprism.us14.list-manage.com/track/click?u=14f106d040bc4a19e9b83a704&id=d55a251c16&e=bf80900bf7>
>  for more information.
>
>
>
>
>
>
>
> Image:  Characteristics of Japanese stiltgrass. Photo credit: Alabama
> Cooperative Extension System
>
>
>
> Want to learn more about managing Japanese stiltgrass
> and other invasive warm season grasses?
>
> Join Blue Ridge PRISM for our quarterly summer meeting
> on Wednesday, July 21st at 1 pm!
>
> Click *HERE*
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