It certainly does. My experience is that some areas that are treated are clear the next year. Others, particularly if there is some disturbance, seem to have a few stray plants that come up. When seeds are held in the seedbank there has to be something that causes them to germinate the second year when they didn't germinate the first year. I feel like that is some sort of ground disturbance bringing the seeds to the surface.
I’m a huge fan of this channel and grateful for your guidance over the last few years! Question: if stiltgrass has started setting seed and you hit it with herbicide (let’s say glyphosate) do you THINK it might make the seeds unviable, since they are still developing?
I feel (but can't prove) that glyphosate stops or slows the flowering process. If the seeds are viable when sprayed I have no reason to believe that they won't stay viable.
I'm so glad this appeared in my recommended. Stiltgrass has completely taken over my neighbors neglected back lawn and has crept over to mine. It's sunny back there, but the stiltgrass has also started creeping up their shaded side lawn between my driveway and their house to the front. Their front lawn is completely shaded by a giant maple tree and has only vines (mostly invasive and which I have been keeping under control enough to keep them out of my lawn) but the stiltgrass is now hopping over the driveway to my front lawn which is more sunny. To control it in my lawn I will need to treat theirs, too, they do absolutely nothing to either their front or back lawn except sometimes rake Fall leaves to the curb for pickup.
Try Clethodim! it's way cheaper than Acclaim for use in large areas and ONLY kills grass (dont use in your lawn, it kills ALL grasses). Clethodim is great if you're worried about saplings or any other broadleafs you don't want to destroy in the forest. I'm using it now, spraying ~50ac that's a stiltgrass carpet - it's also cheaper than 1% glyphosate. It's got a really short half-life, no soil activity, not harmful to bees/mammals BUT it SMELLS like nuclear waste :) I'm hoping i can get everything sprayed before Sep. here in Virginia.
Thank you for the information. I've been using Acclaim Extra on my Stilt grass. On the first go-around, I mixed 1 gallon of water, surfactant, and 9ml of AE. It didn't faze the stilt grass. Three weeks later, I bumped the dosage to 15ml. That amount made it look a little sickly but still didn't kill it. I'm considering going to 20ml next. Do you have any thoughts?
Thanks for the information. Seem we are keeping most our forest invasives under control, but stiltgrass has been the most challenging. It keeps popping up in new places , perhaps from wildlife transporting it around.
It is particularly hard because any missed plants will be producing hundreds of seeds for next year. At least with the woody invasives we have a few years to tackle the problem.
Thanks for taking the time to document that. Just picked up a dedicated sprayer for acclaim yesterday for sensitive areas I don't want to nuke. I have one test plot I am closely watching. I blew a bunch of leaves into this area in the fall and burned them. Hot fire that consumed everything. Forbes and other species are coming up this spring but no stiltgrass where the fire was good and hot. Hit known problem areas that have already sprouted this year with my first tank of Acclaim. Interested to see the results.
Enjoyed your video. My property is at about the same latitude (in Southern Indiana) as yours. Stiltgrass is a problem for me. Generally, I've been fighting it later in the season, as my forestry consultant does. I really like the idea of using .5% gly instead of 2%. I may even experiment with .25% in a backpack sprayer. 2 questions: 1.) Would it be better to spray glyphosate earlier in the stiltgrass growth season? 2.) What's the ideal earliest time to start post-emergent spraying? From what I've read, late summer is the ideal time. I've also read that mid May through early September is good. However, I don't know if that's valid for my part of the country. Thanks for your work and sharing your knowledge.
I am debating spraying Stiltgrass now, except that I am still focusing on Garlic Mustard. I think spraying earlier is better so that the plants have a chance to die before the seeds set. Later on in the summer a lot of the forest floor dies back, which means less damage to other plants (depending on what you are spraying).
@@TheWoodlandSteward After some experimentation around my house, I wanted to share my results. 1. Using .5% GLY worked well with grass along the fence row. It didn't successfully kill clover in my wife's gardens. Used 4% Triplet SF for clover and other broadleaves in the lawn. 2.) For sidewalk weeds, I use 4% GLY. May be overkill, but it's worked for years. On the farm: In years past, I've used 2% GLY for stilt grass. However, I plotted out two 10' x 10' areas that I will try a .5% GLY and a .25% GLY. I'll post the results in a few weeks. In the mean time, I'll use my 2% GLY mixture until I see how my 10' areas do.
@@markcompall5501 @thewoodlandsteward I've had great luck with 0.5% gly on stiltgrass further south (alabama) which I use for areas where it's basically a blanket of stiltgrass and I'm not trying to save anything. Treated a large area last summer and this spring and summer tons of wildflowers so far, and very little stiltgrass but it's still mixed in - just started later and native stuff got out ahead of it. I've also had good luck with clethodim in areas where there is more I want to save, as it targets pretty well. It breaks down in about 3 days in soil, and does not bio-accumulate, but it can be harmful to amphibians and aquatics (and can be long lasting if it gets into water, though likely at non toxic levels if used according to label) so I've never used it near water/runoffs as I just won't risk it. I've never tried Acclaim. Here I'm using post emergence stuff as early as...well...now. With a second treatment later in season if it comes back. Some areas it's already 8" tall, but I'm much further south. I'm happy with what I see changed from last year although I know it will be a long haul.
This is amazing! Have you noticed any damage to mature trees when using glyphosate vs acclaim extra? Should I be concerned for using any of those two near mature trees?
Glyphosate at "foliar dilutions" (1-4%) shouldn't impact trees. I haven't noticed any trees dying or unhealthy after treating herbs at their bases. Acclaim Extra shouldn't impact broadleaf plants.
I live on 50 acres in upstate South Carolina, most of it wooded. Stilt grass was never a problem until last couple of years and now it is taking over everything. I'm not sure what to do about 10 acres in woods, and growing, of stilt grass, too much to spray. It's terrible.
I feel you. I'm on 14 acres in the upstate of SC. It has taken over the entrance to my lake. It even ran off the wildlife that loved the sandy beach. Ugh.
It is a real problem once it gets out of hand. Hopefully others will hear your story and hit it early. Unfortunately, your ten acres will become 15 pretty quickly, so you need to decide if you take on the monumental task of getting it now, or throw up your hands and surrender. Task one would probably be to be super careful traveling between infected areas and clean areas.
@@TheWoodlandSteward Unfortunately it's already too late. Truth is, I didn't even notice it until it got out of hand. Now I see it everywhere, not just my property, but along the roads, neighboring properties. I've asked my neighbors if they have heard of Japanese stilt grass. No one around here has ever heard of it, until now, but all of a sudden it's EVERYWHERE.
I have tried cutting stiltgrass on our driveway with a trimmer. I don't have any scientific data, but it seems like scalping it is effective. If done early, it may resprout, but hitting it again should remove it.
I've followed your advice from of a year or so ago to use Acclaim Extra and I haven't looked back. :) It's worked wonders. Barely any reemergence of stiltgrass where I sprayed early in the season. What remains is very probably user error (i missed some) . The only downside is the price, as it is quite costly, but averages 2-3 dollars a gallon once it's mixed, and for the results I'll gladly pay that.
Is Japanese Stiltgrass that prevalent in Southeast Ohio? I dont think I have ever seen it around Cincinnati myself, but maybe I'm not looking hard enough for it.. I do see winter creeper nearly everywhere around here, especially yards and parks. Do you deal with winter creeper much at Oak Haven?
There is plenty around Cincinnati! I weed Winter Creeper, because we don't have much of it. We are working on a site right now that is full of it. I assume we will try several techniques and produce a video sometime soon.
Great video! I wanted to add that once you do find a method that works for killing the stilt grass, you will still need to treat the area. Don't get discouraged if it's not a one and done treatment! None of the methods will kill the seeds that are already in the soil from years of stilt grass infestation. It can return until that seedbank is exhausted.
I wish I had a good answer to this. Observationally, I feel like things often stop developing soon after treating, even if they are not killed. If the seeds (either the obvious seeds or the cleistogamous seeds) are ripe, glyphosate will not hurt them.
Just found your channel and am watching them. Any tips on multi flora and eradicating it?? We have 38acres in SWPa. I havethought about hiring forestry mulched to do it but property is hilly androcky and trees are close together.
I'll be honest, I am scared by Forestry Mulchers. They seem to devastate everything. I'm concerned that the invasives will be the ones that will win the race to repopulate. I treat multiflora rose with a brush cutter and a wick applicator with 20% glyphosate. Large patches are often just a few canes coming from a central location.
I am trying to understand why someone , usually a person with some basic college degree from years ago goes out into the woods and kills things with poisons. Then they makes a video about it. Not a video about planting native plants, or the problems with invasion biology such as Invasion Treadmills. How about discussing the absolute futility of ignoring the math and numbers needed to actually do something rather than eradicating something because you "feel" it has potential harm?
I'm a volunteer weed puller in Great Falls Park (VA) and there and in the private environs in the area I have used mechanical means to pull garlic mustard, wavyleaf basketgrass, and stiltgrass. I can tell you for a fact that the harm done by these invasives is not some hypothetical potential; it's a reality. We now have area dead of frogs, turtles, insects, and any other plant other than a monoculture of stilgrass, with patches of basketgrass underneath. I'm no fan of the poisons but I am overwhelmed by the task, am unable to handle the scope of the infestation.
Are you suggesting that I am wasting my time trying to control stiltgrass, or that I didn't make a clear argument that stiltgrass is detrimental to the native environment, or that I did not address replacing removed non-natives with natives? (Or something else entirely.) It could be that I am channeling Sisyphus in my battle, but I can see a noticeable improvement in the areas that I remove stiltgrass. It is a battle that takes persistence, but I think the effort is worth the trouble. Anybody that has seen a stiltgrass monoculture understands that our environment is less diverse and less resilient when we allow these species with no natural predators to dominate the landscape. As far as planting natives, we have videos on that subject. I am fortunate in that we have a diverse and healthy local ecosystem that is producing plenty of natural propagules to re-establish an area cleared on non-natives.
wtf? I’m in a forest right now watching this man’s incredible channel and getting the best advice on how to rewild this place which is getting rid of this grass that is everywhere. It’s like 5 acres of it where not many natives will survive. I’m being very reactive here I know. This is just the most ignorant comment
I have read that Stiltgrass seed is viable for 7 years. So it takes some dedication to keep it under control.
It certainly does. My experience is that some areas that are treated are clear the next year. Others, particularly if there is some disturbance, seem to have a few stray plants that come up. When seeds are held in the seedbank there has to be something that causes them to germinate the second year when they didn't germinate the first year. I feel like that is some sort of ground disturbance bringing the seeds to the surface.
I’m a huge fan of this channel and grateful for your guidance over the last few years! Question: if stiltgrass has started setting seed and you hit it with herbicide (let’s say glyphosate) do you THINK it might make the seeds unviable, since they are still developing?
I feel (but can't prove) that glyphosate stops or slows the flowering process. If the seeds are viable when sprayed I have no reason to believe that they won't stay viable.
Thank you for the information! I was just amazed to see how much it has spread here on our farm. I was wondering how the vinegar is working out?
I'm so glad this appeared in my recommended. Stiltgrass has completely taken over my neighbors neglected back lawn and has crept over to mine. It's sunny back there, but the stiltgrass has also started creeping up their shaded side lawn between my driveway and their house to the front. Their front lawn is completely shaded by a giant maple tree and has only vines (mostly invasive and which I have been keeping under control enough to keep them out of my lawn) but the stiltgrass is now hopping over the driveway to my front lawn which is more sunny. To control it in my lawn I will need to treat theirs, too, they do absolutely nothing to either their front or back lawn except sometimes rake Fall leaves to the curb for pickup.
I too need to have a conversation with my neighbor about Stiltgrass in their lawn. Hopefully they will be understanding.
Try Clethodim! it's way cheaper than Acclaim for use in large areas and ONLY kills grass (dont use in your lawn, it kills ALL grasses). Clethodim is great if you're worried about saplings or any other broadleafs you don't want to destroy in the forest. I'm using it now, spraying ~50ac that's a stiltgrass carpet - it's also cheaper than 1% glyphosate. It's got a really short half-life, no soil activity, not harmful to bees/mammals BUT it SMELLS like nuclear waste :) I'm hoping i can get everything sprayed before Sep. here in Virginia.
Thank you for the information. I've been using Acclaim Extra on my Stilt grass. On the first go-around, I mixed 1 gallon of water, surfactant, and 9ml of AE. It didn't faze the stilt grass. Three weeks later, I bumped the dosage to 15ml. That amount made it look a little sickly but still didn't kill it. I'm considering going to 20ml next. Do you have any thoughts?
Thanks for the information. Seem we are keeping most our forest invasives under control, but stiltgrass has been the most challenging. It keeps popping up in new places , perhaps from wildlife transporting it around.
It is particularly hard because any missed plants will be producing hundreds of seeds for next year. At least with the woody invasives we have a few years to tackle the problem.
Thanks for taking the time to document that. Just picked up a dedicated sprayer for acclaim yesterday for sensitive areas I don't want to nuke. I have one test plot I am closely watching. I blew a bunch of leaves into this area in the fall and burned them. Hot fire that consumed everything. Forbes and other species are coming up this spring but no stiltgrass where the fire was good and hot. Hit known problem areas that have already sprouted this year with my first tank of Acclaim. Interested to see the results.
Interesting tests. It sounds like the fire was hot enough to kill surface seeds, but not so hot as to kill the roots of perennials.
Enjoyed your video.
My property is at about the same latitude (in Southern Indiana) as yours. Stiltgrass is a problem for me. Generally, I've been fighting it later in the season, as my forestry consultant does. I really like the idea of using .5% gly instead of 2%. I may even experiment with .25% in a backpack sprayer.
2 questions:
1.) Would it be better to spray glyphosate earlier in the stiltgrass growth season?
2.) What's the ideal earliest time to start post-emergent spraying? From what I've read, late summer is the ideal time. I've also read that mid May through early September is good. However, I don't know if that's valid for my part of the country.
Thanks for your work and sharing your knowledge.
I am debating spraying Stiltgrass now, except that I am still focusing on Garlic Mustard. I think spraying earlier is better so that the plants have a chance to die before the seeds set. Later on in the summer a lot of the forest floor dies back, which means less damage to other plants (depending on what you are spraying).
@@TheWoodlandSteward After some experimentation around my house, I wanted to share my results. 1. Using .5% GLY worked well with grass along the fence row. It didn't successfully kill clover in my wife's gardens. Used 4% Triplet SF for clover and other broadleaves in the lawn. 2.) For sidewalk weeds, I use 4% GLY. May be overkill, but it's worked for years. On the farm: In years past, I've used 2% GLY for stilt grass. However, I plotted out two 10' x 10' areas that I will try a .5% GLY and a .25% GLY. I'll post the results in a few weeks. In the mean time, I'll use my 2% GLY mixture until I see how my 10' areas do.
@@markcompall5501 @thewoodlandsteward I've had great luck with 0.5% gly on stiltgrass further south (alabama) which I use for areas where it's basically a blanket of stiltgrass and I'm not trying to save anything. Treated a large area last summer and this spring and summer tons of wildflowers so far, and very little stiltgrass but it's still mixed in - just started later and native stuff got out ahead of it. I've also had good luck with clethodim in areas where there is more I want to save, as it targets pretty well. It breaks down in about 3 days in soil, and does not bio-accumulate, but it can be harmful to amphibians and aquatics (and can be long lasting if it gets into water, though likely at non toxic levels if used according to label) so I've never used it near water/runoffs as I just won't risk it. I've never tried Acclaim. Here I'm using post emergence stuff as early as...well...now. With a second treatment later in season if it comes back. Some areas it's already 8" tall, but I'm much further south. I'm happy with what I see changed from last year although I know it will be a long haul.
This is amazing! Have you noticed any damage to mature trees when using glyphosate vs acclaim extra? Should I be concerned for using any of those two near mature trees?
Glyphosate at "foliar dilutions" (1-4%) shouldn't impact trees. I haven't noticed any trees dying or unhealthy after treating herbs at their bases. Acclaim Extra shouldn't impact broadleaf plants.
I live on 50 acres in upstate South Carolina, most of it wooded. Stilt grass was never a problem until last couple of years and now it is taking over everything. I'm not sure what to do about 10 acres in woods, and growing, of stilt grass, too much to spray. It's terrible.
I feel you. I'm on 14 acres in the upstate of SC. It has taken over the entrance to my lake. It even ran off the wildlife that loved the sandy beach. Ugh.
It is a real problem once it gets out of hand. Hopefully others will hear your story and hit it early. Unfortunately, your ten acres will become 15 pretty quickly, so you need to decide if you take on the monumental task of getting it now, or throw up your hands and surrender. Task one would probably be to be super careful traveling between infected areas and clean areas.
@@TheWoodlandSteward Unfortunately it's already too late. Truth is, I didn't even notice it until it got out of hand. Now I see it everywhere, not just my property, but along the roads, neighboring properties. I've asked my neighbors if they have heard of Japanese stilt grass. No one around here has ever heard of it, until now, but all of a sudden it's EVERYWHERE.
Does cutting it with a string trimmer before it goes to seed prevent it from returning?
I have tried cutting stiltgrass on our driveway with a trimmer. I don't have any scientific data, but it seems like scalping it is effective. If done early, it may resprout, but hitting it again should remove it.
I've followed your advice from of a year or so ago to use Acclaim Extra and I haven't looked back. :) It's worked wonders. Barely any reemergence of stiltgrass where I sprayed early in the season. What remains is very probably user error (i missed some) . The only downside is the price, as it is quite costly, but averages 2-3 dollars a gallon once it's mixed, and for the results I'll gladly pay that.
It is well worth it to me, but I understand that it is more expensive than some other options.
Is Japanese Stiltgrass that prevalent in Southeast Ohio? I dont think I have ever seen it around Cincinnati myself, but maybe I'm not looking hard enough for it..
I do see winter creeper nearly everywhere around here, especially yards and parks. Do you deal with winter creeper much at Oak Haven?
There is plenty around Cincinnati! I weed Winter Creeper, because we don't have much of it. We are working on a site right now that is full of it. I assume we will try several techniques and produce a video sometime soon.
Great video! I wanted to add that once you do find a method that works for killing the stilt grass, you will still need to treat the area. Don't get discouraged if it's not a one and done treatment! None of the methods will kill the seeds that are already in the soil from years of stilt grass infestation. It can return until that seedbank is exhausted.
it is a long term commitment!
If I spray round up on stilt grass when the seeds are developed, will t hose seeds die also?
I wish I had a good answer to this. Observationally, I feel like things often stop developing soon after treating, even if they are not killed. If the seeds (either the obvious seeds or the cleistogamous seeds) are ripe, glyphosate will not hurt them.
Just found your channel and am watching them. Any tips on multi flora and eradicating it?? We have 38acres in SWPa. I havethought about hiring forestry mulched to do it but property is hilly androcky and trees are close together.
I'll be honest, I am scared by Forestry Mulchers. They seem to devastate everything. I'm concerned that the invasives will be the ones that will win the race to repopulate. I treat multiflora rose with a brush cutter and a wick applicator with 20% glyphosate. Large patches are often just a few canes coming from a central location.
What Glyphosate are you using??
We use Drexel Imitator Plus 40% concentrate from Rural King.
How about prescribed burn?
I am trying to understand why someone , usually a person with some basic college degree from years ago goes out into the woods and kills things with poisons. Then they makes a video about it. Not a video about planting native plants, or the problems with invasion biology such as Invasion Treadmills. How about discussing the absolute futility of ignoring the math and numbers needed to actually do something rather than eradicating something because you "feel" it has potential harm?
I'm a volunteer weed puller in Great Falls Park (VA) and there and in the private environs in the area I have used mechanical means to pull garlic mustard, wavyleaf basketgrass, and stiltgrass. I can tell you for a fact that the harm done by these invasives is not some hypothetical potential; it's a reality. We now have area dead of frogs, turtles, insects, and any other plant other than a monoculture of stilgrass, with patches of basketgrass underneath. I'm no fan of the poisons but I am overwhelmed by the task, am unable to handle the scope of the infestation.
Are you suggesting that I am wasting my time trying to control stiltgrass, or that I didn't make a clear argument that stiltgrass is detrimental to the native environment, or that I did not address replacing removed non-natives with natives? (Or something else entirely.) It could be that I am channeling Sisyphus in my battle, but I can see a noticeable improvement in the areas that I remove stiltgrass. It is a battle that takes persistence, but I think the effort is worth the trouble. Anybody that has seen a stiltgrass monoculture understands that our environment is less diverse and less resilient when we allow these species with no natural predators to dominate the landscape. As far as planting natives, we have videos on that subject. I am fortunate in that we have a diverse and healthy local ecosystem that is producing plenty of natural propagules to re-establish an area cleared on non-natives.
Love the no response back from this guy
wtf? I’m in a forest right now watching this man’s incredible channel and getting the best advice on how to rewild this place which is getting rid of this grass that is everywhere. It’s like 5 acres of it where not many natives will survive. I’m being very reactive here I know. This is just the most ignorant comment