Japanese Stiltgrass (Microstegium vimineum) - Identification & Control June 4, 2020
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- Опубліковано 4 чер 2020
- Japanese Stiltgrass is a highly invasive, non-native plant that has a significant negative impact on our native woodlands. We discuss its identification (including some look-alikes) and control thorough the use mowing, mechanical pulling, and chemical spraying (using glyphosate, Grass-B-Gone, Fusilade II, Acclaim Extra, and Milestone). Join the Woodland Steward in this visit to Oak Haven, a 60-acre private woodland in Southwest Ohio near Cincinnati, where stiltgrass is the new threat on the block.
I love how you work through the options to control stilt grass from round, the option with the most impact to the most conservative.
Interesting history on how it came to the U.S. Thanks for all the info!
shiny center, palmic fashion, sheath -- all very helpful. thank you.
Love the information ~ and the dog looking for your attention ❤️
She always needs more attention!
Important info. Thx
Glad it was helpful!
I have been letting this stuff get noticeably higher (mid summer before it flowers) than other grasses, in the 18 to 24 inch height so its easy to see and hitting it with the standard roundup sprayer you get it stores. Its not really a spray more like a wide trickle stream so its not airborne and easy to dribble directly on the stiltgrass. It takes about two weeks to kill it turning it like straw color. You can control what the dribble sprayer hits pretty easy not hitting other plants or shorter grasses under it. I can treat 5 acres of breakout patches in a few hours this way. I decon my exposed body parts using a mix of 3 parts water to 2 parts household beach for 30 seconds and rinse off with water. This deactivates the roundup and renders it inactive breaking its chemical bonds.
Thanks for the input! I could see how spraying over the top of more desirable plants could be helpful. In our woods Stiltgrass is often growing under other things, so I'm not sure I could spray it and miss the other plants in the area. I've never heard of deconning your body with bleach. Because I have a dye in the spray, it's pretty obvious when I get it on my body, then I usually wash with Lava soap. I'm a little uncomfortable putting bleach that strong on my body.
I'd be very interested in a future video comparing these herbicides in regards to stilt grass. Most of my problem aggressive exotic stuff I've tried to pull by hand, but acres and acres of stiltgrass is a bit beyond me :)
I have been very happy with the Acclaim Extra, but we only have been using it for two seasons. The first season we tried a comparison of Grass-B-Gone RTU, 2% Glyphosate, and the Acclaim Extra. The Grass-B-Gone worked great, but was too expensive ($32/gallon in little bottles). The same active ingredient is in Fusilade II, which is available in a concentrate, which lowers the price to $6.74/gallon, but that is still pretty expensive. The 2% glyphosate $0.68/gallon) worked fine on the Stiltgrass, but also killed off any other grasses and forbs in the area. The Acclaim Extra was a good balance of price and targeted treatment ($1.48/gallon diluted from 16 oz. bottles purchased from Seedbarn.com). I had high hopes for Milestone, which was billed to kill everything bad and keep everything good (and make you more handsome in the process), but the list of plants it controls includes Redbud, Bedstraw, Buttercup, and other things I might want to keep. It is by far the cheapest option ($0.30/gallon), but you have to buy 32 oz. of concentrate ($138.96), which is enough for about 460 gallons of solution. I was tempted, but then realized that Milestone is also a pre-emergent herbicide, so it sticks around in the soil to kill plants as they germinate. That has some serious benefits, but also some serious risks. I prefer to use Glyphosate and Acclaim Extra which have much shorter half-lives. The fenoxaprop-p-ethyl in Acclaim Extra supposedly has a half-life of less than three days. I hope that was helpful. Keep me posted on how your battle goes.
@@TheWoodlandSteward That was excellent info! Thank you very much! Was especially looking forward to becoming more handsome with each gallon I use with the Milestone, but will stick with the Acclaim :)
@@TheWoodlandSteward I've ordered the Acclaim Extra, and will try an early season test. Millions of stiltgrass seedlings are rapidly growing and I'm keen to see if early season spraying might be enough to give some of the natives a chance to gain ground this season. I fully expect to spray later too. Will update everyone on the results. Thanks for the advice!
Just an update. The Acclaim Extra worked wonders! Killed stiltgrass and left everything else alive. Including perennial native grasses. Only downside is the cost, at over $100 a pint, and I have acres and acres of stiltgrass throughout the woodland. Still, I now have a weapon with which to kill this blanketing tide of evil :)
I have a serious stilt weed problem along with many other unvasive species. I will try acclaim
I have a suggestion for silt grass I live in Hidden valley lake in Se Indiana at one time we used herbicide to kill silt grass now we use a weed wacker. If area is small I just pull it if area is large I wait till grass blooms hit with the weed wacker, by the time the grass grows back and blooms again we have a hard freeze and kills it.. it works very well also doesn't kill other grasses and sedges in area..
Thanks Tim. Sounds like a great idea.
What do you recommend for Japanese stiltgrass for preemgant
How soon after application of acclaim could I plant say wildflowers or native plants? Or would you recommend leaving the area completely bare for several seasons?
The label says, "Acclaim Extra Herbicide is a selective grass weed herbicide and has little or no activity on broadleaf plants or sedges." I would give it time to kill the grass before disturbing the soil, but then I would think you could plant right away.
Acclaim is 900 per gallon….so that seems reasonable…
we have stilt grass in a wooded area and along a creek. do you know how Acclaim extra effects Christmas ferns and amphibians such as frogs?
Acclaim Extra should not be used in a stream. I have started using a glyphosate formulation with an aquatic "friendly" surfactant if it might come in contact with aquatic life (Shoreklear Plus). I have been using a 2% solution, but others suggest that a 0.5% solution works for Stiltgrass. I have never seen Acclaim Extra negatively impact Christmas Fern, and we have a lot of it.
Thanks for the video but you left us hanging! WAS IT EFFECT?
I have been treating Japanese Stiltgrass with Acclaim Extra for about a week in our woods. The areas that I treated last year are pretty much clean of Stiltgrass. Several of the areas have a few scattered plants where it was pretty dense last year. Unfortunately, I am finding large areas that I didn't treat last year that have a dense Stiltgrass population. All in all I am very hopeful that I will be able to get it under control. Thanks for asking.
Trying to keep my orchard organic.
Any natural killers of this invasive?? Thx
We are currently running some tests using various vinegar dilutions, but I don't know about the potential impact of adding acid to the soil under your fruit trees. I have heard positive results about mowing, but my experience has been that you need to scalp the plants all the way to the ground several times a season to effectively keep it from seeding.
What should we plant in the place of stiltgrass after we pull it? I have about 4 acres in a wetland that has been taken over but any chemicals are a no-no from the Chesapeake Bay people...
That really depends on what is already there and what your end goal is. I don't have any experience with your neck of the woods, so I would probably talk to a County Extension Agent for your area. Good luck!
Also wondering the same thing as we have a wet woodland area that we want to control Japanese stiltgrass (and a whole host of other invasives there). We will certainly plants some native understory shrubs, but wondering whether there are some decent native groundcovers that will outcompete the stiltgrass. If you come up with something, let us know! I don't have as big of a space to tackle, but would be very interested to hear what you decide to do and how it works out!
@@kirstensmith4461 I've pulled most of it by hand and I've been sprinkling 1 part annual rye grass mixed with 10 parts peat moss... I dump bags of old native perennial seeds in there too... I figure that combined with hand pulling/weedeating will clear most of it out by next fall.
People can claim this grass is a "problem"...but the truth, is that Japanese Stiltgrass is one of the only plant species that will grow well on our property. We live in the Appalachian mountains and our land is extremely shaded with lots of trees, very rooty soil, tons of clay, it's sloped, and tons of deer to eat everything. All those factors combine to eliminate nearly every plant from growing well on our yard. But stiltgrass THRIVES despite all those factors. So for us, our choice is either A- have a yard of dirt and roots, or B- at least have a fairly attractive grass plant covering our lawn.
Unfortunately you're spreading an invasive species into quality natural areas around your property, degrading the wider ecosystem beyond your yard.
How did the Acclaim work?
Acclaim Extra has been working great! It takes longer to kill than I would like (2-3 weeks), but seem to kill every Stiltgrass that I spray. It also leaves the forbs and some other grasses. I will follow up with some pictures of the areas that I treated.
@@TheWoodlandSteward That's great to hear! I'm fortunate enough to steward around 50 acres of woodland, and although I'm gradually winning battles against many of the usual suspects (garlic mustard, bittersweet, etc. ) stiltgrass has so far beaten me. Will definitely give this a try. (Edge of western Maryland)
what herbicide takes care of this in a lawn? tenacity?
No, not tenacity. I treated an area last year with tenacity and then the Japanese stiltgrass came afterwards
So… don’t know about you, but I just ordered some Acclaim Extra
@@johnsaunders8395 I tried tenacity and all it did was make it change color for a few days.. came back at it with acclaim extra and it wiped it out. It took 3 weeks to work. But highly effective
Where did you get the red dye?
I actually prefer the blue, but the red came in a bettix bottle which makes measuring easier. Now I buy the blue dye and use the old red bettix bottle. I purchase them both in-store at Rural King. www.ruralking.com/lazer-spray-foam-dye-red-16oz
Great! A solution for those who are blue-green color blind. Thanks!!
Did you use foam concentrate, or just water?
in the first seconds of the video, i saw a tree that looks like an american chestnut!
some trees look like Chestnuts, sawtooth oak does with its leaves, I thought for the longest time thats what Baltimore had planted Chestnuts on Martin Luther King BLVD , but they are actually an invasive species of Oak called the sawtooth Oak from East Asia
We have a lot of chinquapin oaks (Quercus muehlenbergii) that look like American Chestnut. We are actually just out of the original range of the American Chestnut. I think our glaciated soil is too alkaline.
The government should be reimbursing landowners who kill invasive grasses and plants like privet, stiltgrass, etc…
Acclaim is $900 per gallon and i have an acre of stiltgrass blanketing and invading other property…state lands….
Wow...cant believe you are promoting poisons, especially Glyphosate! Take "steward" out of your name. Otherwise, just found your channel really enjoy your content.
Worst weed in the world
Definitely one of the worst!