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Killing weeds
I have used Rosate 360 ( 25ml per litre water) on weeds in-between cobbles about 5 weeks ago and they are growing back already. What’s the best remedy to get rid of these for longer. Thanks
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If weeds are re-appearing then it's probably from seeds that were there already. Glyphosate only kills plants that are alive and growing, it has no effect on un-germinated seeds.
For longer-term weed clearance you could try Weedol Pathclear.
That kills living plants and prevents seeds from germinating.
It's getting a bit late in the season for use now, but it may be worth a go.
Billericay - Essex
Knowledge is knowing that a tomato is a fruit.
Wisdom is not putting it in a fruit salad.
'The power of accurate observation .... is commonly called cynicism by those that have not got it.
George Bernard Shaw'
Once absorbed it will kill the entire plant.
Some plants with waxy leaves - e.g. ivy may take 3 applications.
It also only works when plants are actively growing - Mar-Sept.
I used some on some hidden large docks a few days ago and they're dying back already.
Billericay - Essex
Knowledge is knowing that a tomato is a fruit.
Wisdom is not putting it in a fruit salad.
It needs to be renamed as grass killer and weed postponer really as that is what it generally does.
Thanks for the info @Pete.8 I saw a youtube video where a forester in the US went round killing excess trees which kept springing up by using an axe to make a single chop into the bark about waist high and then using a single spray of 360 and said that would kill the tree.
I have a friend who wants to kill a privet hedge without chopping it down so wants to use 360. Would he spray the leaves or chop the bark and spray there, what do you think?
'The power of accurate observation .... is commonly called cynicism by those that have not got it.
George Bernard Shaw'
I have heard of of cutting into a tree and applying glyphosate to the cut - presumably the arterial system within the tree transfers the glyphosate throughout the tee and does the job.
It's not something I have any experience of doing, so I have no idea if it actually works.
If it were me, I'd spray the leaves of the privet - but when it's actively growing.
Same goes for cutting into the plant and applying it to the cut.
This late in the season I don't know if it would work as plants are shutting down now so the glyphosate may not get absorbed by either method.
One spraying of glyphosate 360 will kill it, but only when it's actively growing.
If your friend has plenty, they could try asap, but it may be better to wait until spring.
Also bear in mind it is VERY strong and will kill most plants it lands on, so set the sprayer to small droplets and not a fine mist that may blow around.
Billericay - Essex
Knowledge is knowing that a tomato is a fruit.
Wisdom is not putting it in a fruit salad.
Unrelated to the original question but mentioned in the thread, for anything with waxy leaves, a bit of dish soap mixed into the glyphosate will help the product stick to the leaves rather than repeated applications.
I was time-pressured so the ivy may have died off with only 1 or 2 applications, but I had landscapers booked..
Billericay - Essex
Knowledge is knowing that a tomato is a fruit.
Wisdom is not putting it in a fruit salad.
As @Pete.8 says though, if you're getting weed seeds constantly coming in, you'll just have to be vigilant and keep applying as and when you see them, as long as there's enough growth for the product to work on.
I live in west central Scotland - not where that photo is...