Question
Charlotte,

I noticed in one of your answers to another person about St. Augustine sod being slow to establish that you thought the problem was Round-Up.  

Surely you know that glyphosate, the chemical in Round-Up, has absolutely no soil activity or residual effect.  In other words, once it dries on the soil it will never again have an effect on a plant.  Since Round-up is a systemic herbicide and has no soil activity it must be applied to the leaf surface of the plant for any damage to occur.  So, how could Round-Up be the problem here considering not only was the roun-up sprayed prior to the sod being layed but new soil was brought in and added to the surface meaning that the area that was sprayed with Round-Up was under 3 cubic yards of soil?

I dont understand?  

Thanks,

Brad  

Answer
That's what they claim, but i used it once, poured it on some johnson grass, and it killed it, then I couldn't get anything to grow in that spot until the next year.
What that stuff is SUPPOSED to do, and what it does is sometimes two different things.
My nursery man, who is a degred nurseryman as well as a chemict, said he has had moe than one client that used that stuff and it apparently DID NOT wash through, or become bengn. they had problems getting anything to grow in that area for some time.
The new soil was brought in and tilled in with the existing soil.
NO WAY does the rounduop become harmless as soon as it is dried.
Till it up into new soil, water it, and you re-activate it.
That stuff should be permantely taken off the market.
they brought in 3 cubic yards of soil but it was spread out nd tilled in.
What don't you understnd?
They didn't dump it all in one spot.
3 cubic ft. of soil is not much if it is spread over 500 sq.ft or lawn.
We are trying to help people by answering questions with not that much information, and not even a picture, mush less being able to examine the grass to see for ourselves what it is or is not doing.
You can't depend on what the manufacturer says, always.
I have never seen a weed killer label that says cats will seek it out, even still in it's container, and ingest it.
They then die a horrible death.
They make their oproduct look as good as they can, and do NOT volunteer anything they are not forced to reveal.
No chemicals is the only SAFE gardening method.
Messing around with poisons is akin to playing russian Roulette, with 5 bullets in the chamber.

Charlotte