Please don't lynch me for asking about the "R" word!
I just had HUGE amounts of the worst, most deep-rooted
weed-grass taken out of a rose path, and don't want to go through that
Already the monsters are poking through the 3" layer of
small bark mulch I put down.
So my question is: How far does Roundup travel? My
rosebushes are about 2-3 feet apart. If I put Roundup
in the middle between bushes, will it hurt them?
Real-world experience appreciated.
I've used earlier versions of Roundup (glyphosate the only active
ingredient) in a sprayer to try and selectively kill poison oak. I
used a 1 gallon sprayer with somewhat of a mist pattern and I'm sure
there was a small amount of overspray. We didn't worry too much about
the other plants in the area, which were weeds.
It depends on how you use it. If you're using it with a sprayer on a
windy day, it will travel. Your over-spray may not be enough to hurt
your bushes but that's very dependent on the specifics.
Roundup used to be available in a spray-can with a thick foam output;
they probably used some sort of foaming agent. It tended not to run
off the foliage and pretty much eliminated over-spray. I don't think
it's still available. The current smaller spray bottles now have a
"foam" setting which sort of foams up the spray and doesn't produce a
fine mist. I'd say just foam it near the base of the weeds, and maybe
spread the Roundup on the foliage with a brush.
Thanks for explanation.
I wasn't planning to spray. Looks like I don't know how Roundup
works. I was just going to pour a diluted amount right on the
little monsters poking their heads out.
Is this do-able?
What I really want to know is how far it travels parallel - sideways.
IOW, if I pour it on some weed poking out, when it sinks in, will it
move 2 feet to each side? One foot? Inches?
It only works well on the foliage. There's pretty much no root
activity. You could water plants (on the soil) with a solution of
Roundup and it won't kill them. It's supposed to bind to soil and get
inactivated quickly. I've even heard of some people using relatively
dirty water to dilute the concentrated versions, which reduces the
Once it reaches the soil, I wouldn't worry about it. It doesn't
affect roots, bark, or woody stems.
On Wed, 04 Jun 2008 22:49:45 -0500, Dioclese wrote:
I hate bermuda grass. I tried your technique before, turning the soil
and removing all pieces. Then repeat. Over and over. But like you
said, it comes back at the first sign of water. I found when digging a
hole that the roots go down 2 feet or more. I wonder if I will ever
win. It is the one thing I hate about my garden.
On Sat, 07 Jun 2008 01:27:46 GMT, jellybean stonerfish
Me too. There is no way to truly get rid of bermuda other than
planting trees to shade it out. It will not grow in shade. At least
in zone 8b Central Texas it doesn't. I have spent my fair share of
digging and pulling and digging and pulling and continue. I saw a
batch coming up through my mulch today and wiped my brow in disgust.
I'm not sure even glysophate gets rid of it with one shot. Maybe
three shots in blazing sun a week apart. I will have to confess that
after 15 years gardening in TX I may have to paint the bermuda with
Oh, and never, never, ever plant a Mexican Elderberry. Never.
On Mon, 02 Jun 2008 15:38:25 -0700, Persephone wrote:
Lynch? You need a kick in the ass at the least. Perhaps you should
give some serious thought to what you are about to do.
How many articles have you posted about monsatano and gm foods and
yadda yadda activism.....yet when confronted with a tough weed, you
consider selling out?
Principles and beliefs only apply to the other guys, eh?
Charlie, on an Emily kick tonite and not in particularly good humor
"Whenever a thing is done for the first time, it releases a little
demon." ~~Emily Dickinson
On Mon, 02 Jun 2008 21:56:35 -0500, Charlie wrote:
Vigorous debate is the hallmark of Usenet; that's where we
air our differences and share our experiences.
But let us please stop short of ad hominem attacks that only demean
the poster, whether or not they're in a good humour when they post.
Ad hominem attacks do not address a problem; they address an
individual (or sometimes a race or an ethnicity; than goodness we
have been free of THAT particular horror!).-
I know, I know, it happens all over the 'Net, and much, much worse
than in this relatively civilized group!
Just hoping we can stick to the issues.
Roundup works by being absorbed through the leaves and passes down the
stems into the root system and kills the whole plant. It is relatively
slow acting and you may need repeated applications. But it is the only
effective way to remove deep-rooted perennial weeds. Just take care
when applying the spray to ensure it does not drift onto the leaves of
your roses as they could be affected too.
Note also, that Roundup is deactivated when it comes into contact with
soil; it is only absorbed by living/growing plant material. It does
not travel. You can safely plant up a sprayed area, the day after.
There are various versions of Roundup. All contain glyphosate, but
some contain diquat, which is moderately toxic. Others contain
pelargonic acid. The poison ivy and brush killing version contains
triclopyr, which is pretty nasty stuff, and quite a bit more
persistent than the other versions. The most basic versions only
contain glyphosate as the active ingredient.
Aha! That's what I wanted to know. So it does not "travel"
horizontally from point of application to adjacent (2 feet)
I went to Home Despot today to get some Roundup, but the clerk
didn't know about "traveling" and sold me Ortho garden grass killer
instead. Pin-point application. Will try it as these pesky crab
grass monsters poke their heads out from the mulch.
I had some bamboo shoots coming up right in the middle of my lawn in
this spring. I tried to kill them to the root by removing the shoots
and soak the in-ground part of the bamboo shoots with Roundup (not a
good idea anyway). I end up getting many 1-ft diameter dead zones in
Please note this is not an "over spray" situation. I spayed the
bamboo from a distance of only 1 inch. I am not sure what really
caused the problem. May be I added too much and Roundup got into the
soil, and kill everything came in contact with the soil. May be I
sprayed too close and Roundup bunced back and hit the surrounding
grass leaves. Next time I will cover the bamboo shoot with a round
tube and spray inside the round tube to avoid any Roundup bouncing
Or you can use a brush to lightly paint Roundup on the leaves of the
It's unlikely that it did anything through the soil. There could be a
small amount of mist or some of it dripped. Roundup is really good at
killing grass. You have maybe 10 minutes to wash off any areas that
you don't want to kill. A spray bottle of water will probably work.
It's supposed to work best on green foliage, and it doesn't sound like
you had any from the bamboo shoots.
That might work. However - I've heard of contaminants from the brush
inactivating some of the active ingredient.
hi. If you got the room to fit, dig out all your mulch and save it,
then rent a rototiller for a day. roundup will work, but it is really
most effective on plants that don't have a well established root
base. I bought a house with well over an acre of yard, and it was a
reantal that was not used for over a year. the grass was 6 foot tall(I
measured!) after I knocked it down with a brush mower, I then tended
to it with a regular mower but still had some major broadleaf issues.
I've used roundup while renting for spot killing of weeds sprouting up
thru sidewalk cracks. I tried it on the well established weeds and it
barely made a dent.
this spring i rented a roto tiller to start a garden. I am so
impressed with how well it worked with killing off all plant material
for making the flower beds that I might just rototill the whole yard
and let it start over next year.
another alternative that is hit or miss would be to put down a barrier
of some sort. about 8 layers of newspaper might work, or black
plastic. My results have varied. the rototiller works great though,
and if you put the mulch back, i think your problems will be over
Appreciate your experience. I will keep it in mind if/when dealing
with a large area, but this one is too small to use a rototiller.
A few years ago, I was dumb enough to spend the day with some
friends digging out the bed, putting down landscape cloth and covering
with small bark. Sure enough, just as the gardener had warned me,
the weeds came right back.
I should have done the black plastic this time, dern it! I did put
down plastic in an adjacent circular area around the water faucet
where a Princess plant lives.* Then I piled lots of little river
stones on top. It looks good; let's hope it keeps the weeds down!
* It's a big old plant; I assume it's getting nourishment from
deep down. If I notice problems, I will water locally.
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.