Is it too late to spray Roundup?

veetwin wrote:

As above really, I have a lot of weeds that need treatment, is it too late for glyphosate even with forecasted dry weather this week?

Perfect day for it.

Think about the health implications, damage to the environment and wildlife, especially bees and other pollinators that you'll be relying on. Forget about Monsanto carcinogenic poison and chose another method.

Maybe you would consider burning them off.

https://www.lenehans.ie/weed-wand.html

Best thing I discovered recently was a liberal amount of table salt dissolved in white vinegar, with a little dishwasher soap mixed in th help adhere to the foliage. Mist it liberally over the weeds and within a week they’re gone.

Did it earlier In the year and haven’t seen a return of them. Leave out the salt if you want anything to grow there again, keep it in for paved areas etc.

So much cheaper & a better result as far as I can see

OU812 wrote: »

Best thing I discovered recently was a liberal amount of table salt dissolved in white vinegar, with a little dishwasher soap mixed in th help adhere to the foliage. Mist it liberally over the weeds and within a week they’re gone.

Did it earlier In the year and haven’t seen a return of them. Leave out the salt if you want anything to grow there again, keep it in for paved areas etc.

So much cheaper & a better result as far as I can see

Next get some soil microarthropods, worms etc & put your mixture on them.

It amazes me how people can be critical of roundup & then put a pile of toxic chemical on the weeds.

Op, as long as it’s going to be dry for the following 6 hours youd be good to go

OU812 wrote: »

When was I critical of roundup? And how are salt & vinegar chemicals (I'll give you credit with the teaspoon of dishwashing soap)???

Sodium Chloride & Acetic Acid are both chemicals.

Discodog wrote: »

Sodium Chloride & Acetic Acid are both chemicals.

The inference was that they were harmful manufactured chemicals (like roundup), Water is a chemical too, do you avoid that?

The problem is Roundup targets the same thing in plants that is in the gut bacteria of honey bees ( little bees don't gain weight as well ) Some strains of Snodgrassella alvi have an alternative way of dealing with the Roundup

No bees = we all starve to death in a year or two

Lumen wrote: »

Salt and vinegar are also manufactured, as is drinking water arguably, but the point is that whether something is manufactured has no bearing on whether it is harmful. Nature is full of toxins.

A weedkiller is by definition deadly.

The issues are selectivity and degradability.

The key is that any weedkiller must bond with the soil on contact & become inert. Roundup is very safe in that regard.

OU812 wrote: »

When was I critical of roundup? And how are salt & vinegar chemicals (I'll give you credit with the teaspoon of dishwashing soap)???

Salt is Sodium Chloride and Vinegar is Acetic Acid. Where did you (not) go to school?

magicbastarder wrote: »

latest news on this:

Exposure to weed killing products increases risk of cancer by 41% – study
Evidence ‘supports link’ between exposures to glyphosate herbicides and increased risk for non-Hodgkin lymphoma
https://www.theguardian.com/business/2019/feb/14/weed-killing-products-increase-cancer-risk-of-cancer

There is so much that has been found to cause cancer these days. One item I find lacking in this article is what amount of exposure increases the risk by 41%. Does casual use (such as probably 99% of the users are) equate to this high risk, or is it excessive use as in those who use it on a daily basis? Does casual use have the same risk factor to causing cancer as perhaps alcohol consumption?

onlyonpaper wrote: »

Guys; Help please; Hate Round up and would be glad to be shot of all those sprays but I have an infestation of Maretails over a large garden and it keeps spreading. At this time of year it sitting happily underground gathering strength and waiting for April to arrive and millions of those bloody stems will appear. In the past I have tried Round up and Neudorff and all the really done was kill the grass and gave more space for the Marestail to spread. Any revolutionary thoughts would be appreciated.

I work part time in a home improvement center in the USA. Weed killers are within my department. There are different formulas to Round Up. One that kills weeds for 2 months, one for 4 months, and one kills weeds for a year.

You can find manufactured alternatives to Round Up. Look for ones that use 2-Phenethyl Proprionate and Eugenol as it’s active ingredient. Or ones with ammonium nonanoate, or soap salt as the active ingredients.

Other manufactured product alternatives include Diquat (Reward™), pelargonic acid (Scythe™), and glufosinate (Finale™).

A completely safe alternative includes:
1 cup epsom salt
1 Cup white vinegar
½ Cup dish washing detergent.
Add to spray bottle spray liberally on weeds. Repeat as necessary.

Or you can use straight vinegar, or orange oil, or boiling hot water

But I think your problem will continue as weed killers deal with postemergents and any weeds underground that have not emerged will continue to grow.

Bottom line… Nothing beats a shovel and hand weeding.

Effects wrote: »

How does this work? Are you saying the weeds will come back?
Roundup won't work on weeds that aren't there yet, correct? So spraying today can't kill dandelions that haven't grown yet for another month/2 months/6 months.

The only roundup I have is the super concentrated stuff, which has different ratios of water to be added depending on the application.

I only use it in very strict circumstances myself. I'd never use it in my own garden.

Yes, the weeds will come back. And yes, weeds that haven't come up yet will still emerge. There are granular pre-emergent weed killers but they only work on selective weeds and crabgrass.

Over here in the US, RoundUp in a white bottle (Weed and Grass Killer) kills weeds for 2 months, in a gold bottle (Extended Control) kills for 4 months, and in a silver bottle (365) kills for up to a year.

There is a RoundUp formula that kills weeds but not grass. It is called 'RoundUp for Lawns.'

Also, you can't kill dandelions until after they emerge.