How do you kill weeds in cement cracks? FAQ

ading more chemicals into the environment. It works by being absorbed into plant leaves and has no effect on emergence. You can spray an area with rou ndup to kill weeds and seed it just a few days later.

orption through the leaves. Agree that it's effective, I don't have any pro blem with it killing weeds in cracks either.

Why would you ever use a concentrate without diluting it? I have 2 gallons of glyphosate,50%,it will make hundreds of gallons. Or I could waste it an d just spray it on as is.

Maybe that assumption is faulty?

My experience is that it does not degrade after many years. Even when being through a barn fire, but plastic jug untouched.

Same here, even mixed up and left outside over the winter it does not reduce it's potency.

reading more chemicals into the environment. It works by being absorbed int o plant leaves and has no effect on emergence. You can spray an area with r oundup to kill weeds and seed it just a few days later.

bsorption through the leaves. Agree that it's effective, I don't have any p roblem with it killing weeds in cracks either.

lons of glyphosate,50%,it will make hundreds of gallons. Or I could waste i t and just spray it on as is.

I would agree that the products I have used don't seem to degrade either, b ut there are many kinds of products and we have no idea what he has, becaus e he hasn't said. Also in my experience the roundup and ground clear type of products are effective for weeds in cracks, so something is wrong.

That could be a problem. You are supposed to spray the foliage. Not pour on the roots.

Don.

Caulking all the seams in my 4 car driveway would take a lot of caulk, and it would look AWFULL - particularly when the caulk started letting go - - - -

Try salt? ot oil?

The only stuff we are allowed to use up here today doesn't hold a candle to what was available 30, or even 15 years ago for effectiveness. It MIGHT be safer.

Pouring a diluted solution works as well as spraying. See my post about sidewalk cracks.

cutting the weeds first defeats Glsysophate herbicides like roundup. They need to be absorbed through the leaves. If your method works, it is getting on enough leaves to do the job.

On Fri, 09 Jun 2017 22:24:10 -0400, snipped-for-privacy@snyder.on.ca wrote in

gasoline kills vegatation fast

Here's a web site reference - biut it only goes back to 1931 - - so it might not apply to your childhood ... :-)

John T.

But the effects do not last as long as a weed killer such as Roundup. For years I used gasoline for those cracks in my sidewalk with the weeds reappearing in about 4 months. One treatment with a weed killer last until the next year.

Actually one of the advantages of Roundup is that it has no persistence. Yo u can spray it on an area to kill everything and plant seeds immediately. U sually the limiting factor is that you want to wait a week for the stuff to die before re-seeding. If you want to keep new plants from growing too, t here are other products, eg ground clear.

For years I used gasoline for those cracks in my

Roundup only kills what is growing at the time. Within about 2 weeks it has deteriorated to 50% , and there is virtually no carryover after

More confusion. With regular roundup, ie glyphosate, you can re-seed in just 3 days. And if you're using one of the long term roundup products, then it's blocking effect lasts many months.