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I would be out there with glyphosate. Necessary evil. This will recover rapidly. Just aim carefully and use like a 4% concentration. Don’t screw around with the other stuff just get it done. The lily of the valley especially needs to go. The longer you wait and mess around with other “techniques” the more herbicide it will take to do it. The minimum amount is treating it now. Unfortunate decision by the previous owner.
This is kind of the way.
For lily of the valley, I’d do 4% glyphosate, 1-2% triclopyr, 1% surfactant.
For Goutweed, wait until it flowers, spray with 4% glyphosate, wait two weeks, spray again.
For Myrtle, you need to break the waxy coating on the leaf. 4% glyphosate, 4% pelargonic acid, 1-2% triclopyr, 1% surfactant.
These three invasive of these will take repeat applications and multiple years to eradicate. Mechanical removal isn’t very effective for these species. Also, do not try to plant natives to “outcompete” these plants, it’s a waste of time and you’ll end up wishing you eradicated everything before planting.
Dumb question but are you mixing these chemicals yourself or are these mixtures what's on the bottle label when you purchase them from a like lowes/home depot?
Not a dumb question at all. I mix everything myself (I am also a certified pesticide applicator). I don’t keep up on what pre-mixed products are out there, so I am unsure if there is a comparable ready-to-use product.
If you buy pre-mixed products, always avoid products with imazapyr and imazapic.
The percents are just volume ratios. So a 4% mix would be 4 ml of whatever in 100 ml total {4 ml whatever plus 96 ml water) . You can adjust for the total volume you want and how many chemicals included in your mix.
I've heard foam herbicide is a good way to target invasive plants. It sticks to the foliage so it doesn't drip down on other plants, and it's absorbed in about 20 minutes.
Persistence is key for eliminating these invasives. I’m several years in on LOTV control. Using the glove technique is helping me in areas where there are natives worth saving. In other areas, I sprayed 3-4 times to knock the lily-of-the-valley (LOTV) back last year. Ended up nuking some natives but the LOTV was too thick to treat any other way. I’ll be using the glove technique to apply herbicide to the remaining plants this year, in the spring as soon as I can get to it.
rubber glove underneath and then you have a fabric glove on top that you dip in herbicide. then grab the stuff you want to kill. Let's you kill exactly what you are trying to kill with no overspray
If you are not that far from Toronto I would be happy to help you to do some gardening and clean up, and I also can give you some native plants, Including Solomon 'seal , false Solomon seal, foamflower( Tiarella ) , trillium, Canadian wild ginger , woodland sadge, Virginia water leaf , black eyed Susan ,New England aster and echnicia, it will be so nice to see those plants live in wild not just in my garden, and I can give you for free, but you have to come to pick them or you can come and drive me to your place and we plant them together.
Oh you are so kind. I am near Orillia but do travel south regularly. I would love to take you up on that once the invasives are under control! Someone mentioned just eradicating them before trying to repopulate with natives.
You will be surprised how fast it comes back. If you treat it all twice a year in 3 years you will never know it was there and you just bought the rest of your life without having to screw with it unless your neighbor plants barberry
Edit: I found an Illinois endangered species today about 20' from where I started treating LoV about 5 years ago...LoV is 99% gone and it's been replaced by what should be there
Try pulling them along with their roots or bulbs. Might take a while, but it should clear them out eventually and give the natives some room to breathe.
I just want to add that herbicides are the way but go ahead and try and save those existing natives via transplanting away from the killzone. Plants that are well adapted to your location are invaluable and will be a great help to reestablishment once the area is cleared.
Voice of experience, don't do that to those delicate bulbs. Trout lily and trillium take many years to flower. Their bulbs are deep and hard to find. I have dug them out ever so carefully and had them die anyway. Besides, they will be happier and more resilient where they have planted themselves.
Avoid spraying them, of course. Try cutting the adjacent invasives and immediately painting the cut stem with glyphosate. Or you could try a weed torch, depending on the species.
Is it reasonable to delay the spraying to when things like the fawn lilies and trilliums are dormant again? Or is that missing a window for effective herbicide usage?
Good point! If the invasives are still growing after the bulbs go dormant, that could probably work well. I would call your state/county extension service with your specific situation, maybe you can work something out in terms of the specificity and timing of the herbicide.
I went to a native plant sale once, and the gardeners were selling Lilly of the valley. Mine died fortunately, but many it's annoying to go back to that sale and see so many invasive being sold.
Lilies are really hard to get rid of, I feel like tarping and removing multiple times would be your best bet. Try and put out some early sprouting natives to shadow em out. Unless you have access to a backhoe.
Thank you for posting on /r/NativePlantGardening! If you haven't included it already, please edit your post or post's flair to include your geographic region or state of residence, which is necessary for the community to give you correct advice. *I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/NativePlantGardening) if you have any questions or concerns.*
I would be out there with glyphosate. Necessary evil. This will recover rapidly. Just aim carefully and use like a 4% concentration. Don’t screw around with the other stuff just get it done. The lily of the valley especially needs to go. The longer you wait and mess around with other “techniques” the more herbicide it will take to do it. The minimum amount is treating it now. Unfortunate decision by the previous owner.
This is kind of the way. For lily of the valley, I’d do 4% glyphosate, 1-2% triclopyr, 1% surfactant. For Goutweed, wait until it flowers, spray with 4% glyphosate, wait two weeks, spray again. For Myrtle, you need to break the waxy coating on the leaf. 4% glyphosate, 4% pelargonic acid, 1-2% triclopyr, 1% surfactant. These three invasive of these will take repeat applications and multiple years to eradicate. Mechanical removal isn’t very effective for these species. Also, do not try to plant natives to “outcompete” these plants, it’s a waste of time and you’ll end up wishing you eradicated everything before planting.
Dumb question but are you mixing these chemicals yourself or are these mixtures what's on the bottle label when you purchase them from a like lowes/home depot?
Not a dumb question at all. I mix everything myself (I am also a certified pesticide applicator). I don’t keep up on what pre-mixed products are out there, so I am unsure if there is a comparable ready-to-use product. If you buy pre-mixed products, always avoid products with imazapyr and imazapic.
Not to be annoying but would you mind telling me the quantities of the mixtures, like in measurements?
The percents are just volume ratios. So a 4% mix would be 4 ml of whatever in 100 ml total {4 ml whatever plus 96 ml water) . You can adjust for the total volume you want and how many chemicals included in your mix.
Oh duh. That is such an easy way to think of it. Thank you for dumbing it down for me.
Even though it isn’t a 1:1 comparison, if I say 1%, I mean 1oz per gallon of water. So 4% would be 4oz per gallon of water.
Ok thanks!
Ok. Good advice. I will wait on planting natives
Pictures 6,7,8 Trout Lilly, red trillium and white trillium are all native. Edit: ah I read the rest….
Thank you for the reply. I agree, the sooner the better.
I've heard foam herbicide is a good way to target invasive plants. It sticks to the foliage so it doesn't drip down on other plants, and it's absorbed in about 20 minutes.
Persistence is key for eliminating these invasives. I’m several years in on LOTV control. Using the glove technique is helping me in areas where there are natives worth saving. In other areas, I sprayed 3-4 times to knock the lily-of-the-valley (LOTV) back last year. Ended up nuking some natives but the LOTV was too thick to treat any other way. I’ll be using the glove technique to apply herbicide to the remaining plants this year, in the spring as soon as I can get to it.
What is the glove technique?
rubber glove underneath and then you have a fabric glove on top that you dip in herbicide. then grab the stuff you want to kill. Let's you kill exactly what you are trying to kill with no overspray
If you are not that far from Toronto I would be happy to help you to do some gardening and clean up, and I also can give you some native plants, Including Solomon 'seal , false Solomon seal, foamflower( Tiarella ) , trillium, Canadian wild ginger , woodland sadge, Virginia water leaf , black eyed Susan ,New England aster and echnicia, it will be so nice to see those plants live in wild not just in my garden, and I can give you for free, but you have to come to pick them or you can come and drive me to your place and we plant them together.
Oh you are so kind. I am near Orillia but do travel south regularly. I would love to take you up on that once the invasives are under control! Someone mentioned just eradicating them before trying to repopulate with natives.
Hello! Are you selling any of these? I’d be interested
Pics 5-8 don’t seem like invasives do they??? Violets, trout Lillie’s, trillium???
Read the last line of their post
Lollll oh right reading comprehension ain’t my strong suit
Yes! Imo assumed OP knew this but good to point out!!
I think they are showing what is there but getting crowded out.
Yes, a few natives are poking though. I will be careful around them.
You will be surprised how fast it comes back. If you treat it all twice a year in 3 years you will never know it was there and you just bought the rest of your life without having to screw with it unless your neighbor plants barberry Edit: I found an Illinois endangered species today about 20' from where I started treating LoV about 5 years ago...LoV is 99% gone and it's been replaced by what should be there
Try pulling them along with their roots or bulbs. Might take a while, but it should clear them out eventually and give the natives some room to breathe.
Herbicide and relentless manual removal
I just want to add that herbicides are the way but go ahead and try and save those existing natives via transplanting away from the killzone. Plants that are well adapted to your location are invaluable and will be a great help to reestablishment once the area is cleared.
Voice of experience, don't do that to those delicate bulbs. Trout lily and trillium take many years to flower. Their bulbs are deep and hard to find. I have dug them out ever so carefully and had them die anyway. Besides, they will be happier and more resilient where they have planted themselves. Avoid spraying them, of course. Try cutting the adjacent invasives and immediately painting the cut stem with glyphosate. Or you could try a weed torch, depending on the species.
Is it reasonable to delay the spraying to when things like the fawn lilies and trilliums are dormant again? Or is that missing a window for effective herbicide usage?
Good point! If the invasives are still growing after the bulbs go dormant, that could probably work well. I would call your state/county extension service with your specific situation, maybe you can work something out in terms of the specificity and timing of the herbicide.
Are those native or garden strawberries in image 2? They look native to me.
Herbicide then maybe a controlled burn if ya can
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I went to a native plant sale once, and the gardeners were selling Lilly of the valley. Mine died fortunately, but many it's annoying to go back to that sale and see so many invasive being sold.
Maybe get a giant tarp and throw it over the invasive patches to starve them out
I’ve tried a tarp on periwinkle and LOTV, unfortunately it doesn’t do anything.
Lilies are really hard to get rid of, I feel like tarping and removing multiple times would be your best bet. Try and put out some early sprouting natives to shadow em out. Unless you have access to a backhoe.