The crab grass slipped in on my lawn this spring. I have sprayed Ortho crab
grass killer on it with very dissapointing results. It was left over from
last year. Does it have a shelf life once opened? Are there other brands of
crab grass killer that work better?

Chas Hurst

"Chas Hurst" <hurst1 [at] comcast.not> wrote in message
news:-9udnUEHxK0CYs7ZRVn-iA [at] comcast.com...
> The crab grass slipped in on my lawn this spring. I have sprayed Ortho
> crab grass killer on it with very dissapointing results. It was left over
> from last year. Does it have a shelf life once opened? Are there other
> brands of crab grass killer that work better?
>
> Chas Hurst

Where do you live? It seems very early for crabgrass in most of the US.

To answer your question, there are a number of varieties of crabgrass
killer. The one I like is Image. I had a huge amount of crabgrass in my new
zoysia last summer. I sprayed it with Image in one of the hose end
applicators and the crabgrass was noticably damaged in a week or so and
completely gone in 3 weeks or so.

http://www.ipm.ucdavis.edu/PMG/PESTNOTES/pn7456.html

UC Davis has great info even if you're not in CA... most of the info
applies.

Nicole
"Chas Hurst" <hurst1 [at] comcast.not> wrote in message
news:-9udnUEHxK0CYs7ZRVn-iA [at] comcast.com...
> The crab grass slipped in on my lawn this spring. I have sprayed Ortho
> crab grass killer on it with very dissapointing results. It was left over
> from last year. Does it have a shelf life once opened? Are there other
> brands of crab grass killer that work better?
>
> Chas Hurst
>

Chas Hurst wrote:
> The crab grass slipped in on my lawn this spring. I have sprayed Ortho crab
> grass killer on it with very dissapointing results. It was left over from
> last year. Does it have a shelf life once opened? Are there other brands of
> crab grass killer that work better?

My experience is that crabgrass killers work very slowly. And, they
are weak. I need about 3 applications, 2 weeks apart. And even then,
it takes a few weeks for the crabgrass do whither.

I agree that it's too early for crabgrass for most of the US.
Crabgrass needs soil temps in the 70s to germinate, which is why it's
not a problem most places until 2-3 months from now.

If it is crabgrass, Aclaim is the best product I've found. It's not a
typical retail product that you'll find at home centers. You need to
buy it at an agri supply type place, like Lesco.

On Sun, 30 Apr 2006 07:09:31 -0400, Stubby
<William.Plummer [at] alum.mit.edu> wrote:

>Chas Hurst wrote:
>> The crab grass slipped in on my lawn this spring. I have sprayed Ortho crab
>> grass killer on it with very dissapointing results. It was left over from
>> last year. Does it have a shelf life once opened? Are there other brands of
>> crab grass killer that work better?
>
>My experience is that crabgrass killers work very slowly. And, they
>are weak. I need about 3 applications, 2 weeks apart. And even then,
>it takes a few weeks for the crabgrass do whither.


Same here, I've had the same experiences like that too. I was
told.... if it was stronger, the regular grass would die too.

I just get mad and pull the stuff up by hand now. If I'm in a rush, I
run around spraying, and come back later, since the crab grass
'yellows' so I can find it later when I have time.

later,

tom [at] www.Consolidated-Loans.info

Thanks for all the replies. I live in SE PA and did not expect to see crab
grass this early, but there it is.


"Kyle Boatright" <kboatright1 [at] comcast.net> wrote in message
news:Pd-dnSMVOuxcm8nZnZ2dneKdnZydnZ2d [at] comcast.com...
>
> "Chas Hurst" <hurst1 [at] comcast.not> wrote in message
> news:-9udnUEHxK0CYs7ZRVn-iA [at] comcast.com...
>> The crab grass slipped in on my lawn this spring. I have sprayed Ortho
>> crab grass killer on it with very dissapointing results. It was left over
>> from last year. Does it have a shelf life once opened? Are there other
>> brands of crab grass killer that work better?
>>
>> Chas Hurst
>
> Where do you live? It seems very early for crabgrass in most of the US.
>
> To answer your question, there are a number of varieties of crabgrass
> killer. The one I like is Image. I had a huge amount of crabgrass in my
> new zoysia last summer. I sprayed it with Image in one of the hose end
> applicators and the crabgrass was noticably damaged in a week or so and
> completely gone in 3 weeks or so.
>
>
>

"Chas Hurst" <hurst1 [at] comcast.not> wrote:
> Thanks for all the replies. I live in SE PA and did not expect to see
> crab grass this early, but there it is.
>
I kind of doubt it. Can you post a pic of it here?

http://tinypic.com

"Steveo" <moparholic [at] hotmail.com> wrote in message
news:20060430091615.219$ky [at] newsreader.com...
> "Chas Hurst" <hurst1 [at] comcast.not> wrote:
>> Thanks for all the replies. I live in SE PA and did not expect to see
>> crab grass this early, but there it is.
>>
> I kind of doubt it. Can you post a pic of it here?
>
> http://tinypic.com

Let's try this one.
http://i2.tinypic.com/wttvdf.jpg

"Chas Hurst" <hurst1 [at] comcast.not> wrote:
> "Steveo" <moparholic [at] hotmail.com> wrote in message
> news:20060430091615.219$ky [at] newsreader.com...
> > "Chas Hurst" <hurst1 [at] comcast.not> wrote:
> >> Thanks for all the replies. I live in SE PA and did not expect to see
> >> crab grass this early, but there it is.
> >>
> > I kind of doubt it. Can you post a pic of it here?
> >
> > http://tinypic.com
>
> Let's try this one.
> http://i2.tinypic.com/wttvdf.jpg
>
Nope, that's not crabgrass, it looks kind of like a fresh cut annual grass
but it's hard to tell from that pic.

"Steveo" <moparholic [at] hotmail.com> wrote in message
news:20060430155012.881$su [at] newsreader.com...
> "Chas Hurst" <hurst1 [at] comcast.not> wrote:
>> "Steveo" <moparholic [at] hotmail.com> wrote in message
>> news:20060430091615.219$ky [at] newsreader.com...
>> > "Chas Hurst" <hurst1 [at] comcast.not> wrote:
>> >> Thanks for all the replies. I live in SE PA and did not expect to see
>> >> crab grass this early, but there it is.
>> >>
>> > I kind of doubt it. Can you post a pic of it here?
>> >
>> > http://tinypic.com
>>
>> Let's try this one.
>> http://i2.tinypic.com/wttvdf.jpg
>>
> Nope, that's not crabgrass, it looks kind of like a fresh cut annual grass
> but it's hard to tell from that pic.

OK, hows about this? Where can I find a picture of crabgrass?
http://i2.tinypic.com/wufrqv.jpg

"Chas Hurst" <hurst1 [at] comcast.not> wrote:
> "Steveo" <moparholic [at] hotmail.com> wrote in message
> news:20060430155012.881$su [at] newsreader.com...
> > "Chas Hurst" <hurst1 [at] comcast.not> wrote:
> >> "Steveo" <moparholic [at] hotmail.com> wrote in message
> >> news:20060430091615.219$ky [at] newsreader.com...
> >> > "Chas Hurst" <hurst1 [at] comcast.not> wrote:
> >> >> Thanks for all the replies. I live in SE PA and did not expect to
> >> >> see crab grass this early, but there it is.
> >> >>
> >> > I kind of doubt it. Can you post a pic of it here?
> >> >
> >> > http://tinypic.com
> >>
> >> Let's try this one.
> >> http://i2.tinypic.com/wttvdf.jpg
> >>
> > Nope, that's not crabgrass, it looks kind of like a fresh cut annual
> > grass but it's hard to tell from that pic.
>
> OK, hows about this? Where can I find a picture of crabgrass?
> http://i2.tinypic.com/wufrqv.jpg
>
Hrmm..maybe quackgrass too. Here's a url to some common grass weeds.

http://tinyurl.com/rhezu

On Sun, 30 Apr 2006 16:00:26 -0400, "Chas Hurst" <hurst1 [at] comcast.not>
wrote:

>
>"Steveo" <moparholic [at] hotmail.com> wrote in message
>news:20060430155012.881$su [at] newsreader.com...
>> "Chas Hurst" <hurst1 [at] comcast.not> wrote:
>>> "Steveo" <moparholic [at] hotmail.com> wrote in message
>>> news:20060430091615.219$ky [at] newsreader.com...
>>> > "Chas Hurst" <hurst1 [at] comcast.not> wrote:
>>> >> Thanks for all the replies. I live in SE PA and did not expect to see
>>> >> crab grass this early, but there it is.
>>> >>
>>> > I kind of doubt it. Can you post a pic of it here?
>>> >
>>> > http://tinypic.com
>>>
>>> Let's try this one.
>>> http://i2.tinypic.com/wttvdf.jpg
>>>
>> Nope, that's not crabgrass, it looks kind of like a fresh cut annual grass
>> but it's hard to tell from that pic.
>
>OK, hows about this? Where can I find a picture of crabgrass?
>http://i2.tinypic.com/wufrqv.jpg
>

Hard to get depth percerption, but IMHO, that looks like crab grass.
BTW, it has been warm enough here in PA to get it. I've seen some on
OTHER people's yards.

The forsythia around here bloomed in early March.

later,

tom [at] www.Consolidated-Loans.info

Tom The Great <Post [at] here.com> wrote:
> On Sun, 30 Apr 2006 16:00:26 -0400, "Chas Hurst" <hurst1 [at] comcast.not>
> wrote:
>
> >
> >"Steveo" <moparholic [at] hotmail.com> wrote in message
> >OK, hows about this? Where can I find a picture of crabgrass?
> >http://i2.tinypic.com/wufrqv.jpg
> >
>
> Hard to get depth percerption, but IMHO, that looks like crab grass.
>
Looks more like quack to me since it appears well established already..like
you said, it's hard to say from that pic. Here's quackgrass in turf:

http://www.turf.uiuc.edu/weed_web/quackgrass/quackgrass_turf .jpg

"Steveo" <moparholic [at] hotmail.com> wrote in message
news:20060430160854.136$5n [at] newsreader.com...
> "Chas Hurst" <hurst1 [at] comcast.not> wrote:
>> "Steveo" <moparholic [at] hotmail.com> wrote in message
>> news:20060430155012.881$su [at] newsreader.com...
>> > "Chas Hurst" <hurst1 [at] comcast.not> wrote:
>> >> "Steveo" <moparholic [at] hotmail.com> wrote in message
>> >> news:20060430091615.219$ky [at] newsreader.com...
>> >> > "Chas Hurst" <hurst1 [at] comcast.not> wrote:
>> >> >> Thanks for all the replies. I live in SE PA and did not expect to
>> >> >> see crab grass this early, but there it is.
>> >> >>
>> >> > I kind of doubt it. Can you post a pic of it here?
>> >> >
>> >> > http://tinypic.com
>> >>
>> >> Let's try this one.
>> >> http://i2.tinypic.com/wttvdf.jpg
>> >>
>> > Nope, that's not crabgrass, it looks kind of like a fresh cut annual
>> > grass but it's hard to tell from that pic.
>>
>> OK, hows about this? Where can I find a picture of crabgrass?
>> http://i2.tinypic.com/wufrqv.jpg
>>
> Hrmm..maybe quackgrass too. Here's a url to some common grass weeds.
>
> http://tinyurl.com/rhezu

Thanks for the link. I b'lieve most of what I have is annual rye grass. I
re-seeded some spots last fall and apparently it was in the mix. I bought
what I thought was quality seed and there was no listing of annual rye grass
on the assay label. Anyway, I can live with the rye since it's an annual and
it gets mowed regularly hopefully keeping it from going to seed.

>> >>
>> >> Let's try this one.
>> >> http://i2.tinypic.com/wttvdf.jpg
>> >>
>> > Nope, that's not crabgrass, it looks kind of like a fresh cut annual
>> > grass but it's hard to tell from that pic.
>>

I think it is annual bluegrass "poa annual". Does it have numerous little
silver/white seeds at the top of the grass leaves, assuming you let it grow?

The only way to get rid of it this spring is to either pull it up by hand or
to wait until warmer, drier weather kills it. I have a bunch of it in my
yard. Didn't think I'd have that problem with <1 year old zoysia sod.

Anyway, the way to keep it from coming back next year (it is a fall/winter
germinating seed) is to apply a pre-emergent that is effective on grassy
weeds early this fall.

One thing for sure, what Chas has is not crabgrass. I line in NJ and
immediately recognized this as the same thing I have in a few spots in
my lawn. It's lighter in color, grows faster than the surrounding
grass, is most noticeable this time of year, then either greatly
diminishes or disappears by summer, only to reappear in the same spot
next spring. It doesn't look at all like crabgrass, which grows
lower to the ground. This stuff grows low for the first inch or so,
then shoots up straight.

It doesn't respond much to Acclaim, which is effective against some
undesirable grasses, especially crabgrass. So, I whacked the few
spots I had it growing in with Roundup and reseeded before it spreads
more and gets way out of control.

I may pull a remaining clump and take it to the local state agri
service for identification, as I've been curious as to exactly what
this is for awhile. Quack grass is on my list of possibilities too.

trader4 [at] optonline.net wrote:
-snippage-
Hi Trader.
>> I may pull a remaining clump and take it to the local state agri
> service for identification, as I've been curious as to exactly what
> this is for awhile. Quack grass is on my list of possibilities too.
>
It might be quack if it hasn't gone to seed yet, or it could also be some
sort of bizarre annual rye, or blue...or, if it is or has seeded. (?)

As someone else has already suggested, the only way to attempt a control of
an annual grass infestation is with a late summer pre-emergent crabgrass
control product application. (the same product you'd use in the spring)

You have to lay it down before the annual grasses re-germinate....otherwise
their whole life cycle starts over. (timing is critical)

It's a real problem to deal with, if you're going for a mono-strand look.

trader4 [at] optonline.net said:
>
>One thing for sure, what Chas has is not crabgrass. I line in NJ and
>immediately recognized this as the same thing I have in a few spots in
>my lawn. It's lighter in color, grows faster than the surrounding
>grass, is most noticeable this time of year, then either greatly
>diminishes or disappears by summer, only to reappear in the same spot
>next spring. It doesn't look at all like crabgrass, which grows
>lower to the ground. This stuff grows low for the first inch or so,
>then shoots up straight.

I've got clumps of similar grass. I let one grow up to flowering and
IDed it as orchard grass (Dactylis glomerata). Perennial, tolerates poor
soil and shade.
--
Pat K. ('someplace.net' is comcast)

Any technology distinguishable from magic is insufficiently advanced.
(attributed to Don Marti)

To Chas and anyone else still interested, I had some weed grass growing
in my lawn that looked identical to the photo that Chas had provided a
few weeks ago. I let it grow to seed head and managed to identify it
as likely to be poa trivialis. Took it to the local county agri
service here and the expert there agreed. It's common name is rough
stalk bluegrass.

The bad news is that there is no selective herbicide for control and it
will spread. Roundup and reseeding, pulling, mowing it frequently
enough to limit seed formation, applying pre-emergent crabgrass control
in early Fall are some of the ways to deal with it.

Ciscoe Morris, Seattle's Channel 5 NBC gardening guru suggests spot
spraying with straight vinegar. Especially on a hot sunny day. Within in
days you can pull those dead grassse up, stir up the soil, add a little
more lawn soil and reseed. Early spring and fall best time to do this.
It works on weeds and grasses coming up in cracks on the sidewalk. I
have a 20 ft or longer area covered with lava rock that abuts next to
the street. I spray the length of it with straight vinegar every now n
then to keep weeds down. This won't kill any seeds weeds have left
behind so have to keep at it.

<trader4 [at] optonline.net> wrote in message
news:1147891355.215166.22750 [at] 38g2000cwa.googlegroups.com...
> To Chas and anyone else still interested, I had some weed grass growing
> in my lawn that looked identical to the photo that Chas had provided a
> few weeks ago. I let it grow to seed head and managed to identify it
> as likely to be poa trivialis. Took it to the local county agri
> service here and the expert there agreed. It's common name is rough
> stalk bluegrass.
>
> The bad news is that there is no selective herbicide for control and it
> will spread. Roundup and reseeding, pulling, mowing it frequently
> enough to limit seed formation, applying pre-emergent crabgrass control
> in early Fall are some of the ways to deal with it.

Thanks for the follow-up Trader. I am currently mowing twice a week with a
bagger in an attempt to corral the seeds. So the pre-emergent applied in
fall will help control it.

Thanks again

Chas Hurst

Chas Hurst wrote:
> <trader4 [at] optonline.net> wrote in message
> news:1147891355.215166.22750 [at] 38g2000cwa.googlegroups.com...
> > To Chas and anyone else still interested, I had some weed grass growing
> > in my lawn that looked identical to the photo that Chas had provided a
> > few weeks ago. I let it grow to seed head and managed to identify it
> > as likely to be poa trivialis. Took it to the local county agri
> > service here and the expert there agreed. It's common name is rough
> > stalk bluegrass.
> >
> > The bad news is that there is no selective herbicide for control and it
> > will spread. Roundup and reseeding, pulling, mowing it frequently
> > enough to limit seed formation, applying pre-emergent crabgrass control
> > in early Fall are some of the ways to deal with it.
>
> Thanks for the follow-up Trader. I am currently mowing twice a week with a
> bagger in an attempt to corral the seeds. So the pre-emergent applied in
> fall will help control it.
>
> Thanks again
>
> Chas Hurst


Yes, the ag extension guy said pre-emergent applied again late summer
would help control it. Of course it won't stop what's there from
spreading by rhizomes. I got rid of the worst spots that I had couple
of weeks ago with Roundup.

I think mine came from some shade mix I used. It's confined to three
areas I seeded couple years ago. On the web, looks like contamination
has been a problem, particularly for grass mix for wet/shady areas, as
that is the environment it likes.

If what you have is poa trivialis, it should disappear with hot, dryer
weather.

trader4 [at] optonline.net wrote:
<.....>
> Yes, the ag extension guy said pre-emergent applied again late summer
> would help control it.

That's bogus. Preemergent controls prevent the seeds from sprouting in
early spring. In order to kill the plants before they set seed in
summer/fall, use a crabgrass killer several times.

Stubby <William.Plummer [at] alum.mit.edu> wrote:
> trader4 [at] optonline.net wrote:
> <.....>
> > Yes, the ag extension guy said pre-emergent applied again late summer
> > would help control it.
>
> That's bogus. Preemergent controls prevent the seeds from sprouting in
> early spring.
>
They do the same thing in late summer, brainiak.

Steveo wrote:
> Stubby <William.Plummer [at] alum.mit.edu> wrote:
> > trader4 [at] optonline.net wrote:
> > <.....>
> > > Yes, the ag extension guy said pre-emergent applied again late summer
> > > would help control it.
> >
> > That's bogus. Preemergent controls prevent the seeds from sprouting in
> > early spring.
> >
> They do the same thing in late summer, brainiak.


Funny how he thinks applying it in late summer is no good, but applying
it several times is a great idea. When are we supposed to apply it
then, 3 weeks in a row in April? LOL

Steveo said:

> Stubby <William.Plummer [at] alum.mit.edu> wrote:
>> trader4 [at] optonline.net wrote:
>> <.....>
>>> Yes, the ag extension guy said pre-emergent applied again late summer
>>> would help control it.
>>
>> That's bogus. Preemergent controls prevent the seeds from sprouting in
>> early spring.
>>
> They do the same thing in late summer, brainiak.

This would be one of the ones that you spoke of in an earlier thread,
wouldn't it?

--
Eggs

- How to become immortal: Read this signature tomorrow and follow its
advice.

trader4 [at] optonline.net wrote:
> Steveo wrote:
> > Stubby <William.Plummer [at] alum.mit.edu> wrote:
> > > trader4 [at] optonline.net wrote:
> > > <.....>
> > > > Yes, the ag extension guy said pre-emergent applied again late
> > > > summer would help control it.
> > >
> > > That's bogus. Preemergent controls prevent the seeds from sprouting
> > > in early spring.
> > >
> > They do the same thing in late summer, brainiak.
>
> Funny how he thinks applying it in late summer is no good, but applying
> it several times is a great idea.
>
I didn't know pre-emergent herbicide could read a calender.... someone
better tell preen. :)
>
> When are we supposed to apply it
> then, 3 weeks in a row in April? LOL
>
Know what too much will do? Root prune the desirables.

Like I told you before your extension guy did, timing is critical with that
approach. Too soon can root prune, and too late won't work. You'll still
end up with some of it.

eggsUNDERSCOREHEREzachtly [at] hotmail.com wrote:
> Steveo said:
>
> > Stubby <William.Plummer [at] alum.mit.edu> wrote:
> >> trader4 [at] optonline.net wrote:
> >> <.....>
> >>> Yes, the ag extension guy said pre-emergent applied again late summer
> >>> would help control it.
> >>
> >> That's bogus. Preemergent controls prevent the seeds from sprouting
> >> in early spring.
> >>
> > They do the same thing in late summer, brainiak.
>
> This would be one of the ones that you spoke of in an earlier thread,
> wouldn't it?
>
Yep. Most of them prevent grass seed germination first, some are better
than others at it.

Stubby wrote:
> trader4 [at] optonline.net wrote:
> <.....>
>
>> Yes, the ag extension guy said pre-emergent applied again late summer
>> would help control it.
>
>
> That's bogus. Preemergent controls prevent the seeds from sprouting in
> early spring. In order to kill the plants before they set seed in
> summer/fall, use a crabgrass killer several times.

you are partially correct. preemergent controls prevent seeds from
sprouting, period.

Steveo said:

> eggsUNDERSCOREHEREzachtly [at] hotmail.com wrote:
>> Steveo said:
>>
>>> Stubby <William.Plummer [at] alum.mit.edu> wrote:
>>>> trader4 [at] optonline.net wrote:
>>>> <.....>
>>>>> Yes, the ag extension guy said pre-emergent applied again late summer
>>>>> would help control it.
>>>>
>>>> That's bogus. Preemergent controls prevent the seeds from sprouting
>>>> in early spring.
>>>>
>>> They do the same thing in late summer, brainiak.
>>
>> This would be one of the ones that you spoke of in an earlier thread,
>> wouldn't it?
>>
> Yep. Most of them prevent grass seed germination first, some are better
> than others at it.

rgr that. I was referring to those that constantly give out bad advice. ;)

--
Eggs

- Listen: Strange women lying in ponds distributing swords is no basis for
a system of government! Supreme executive power derives from a mandate
from the masses, not from some... farcical aquatic ceremony!

eggsUNDERSCOREHEREzachtly [at] hotmail.com wrote:
> rgr that. I was referring to those that constantly give out bad advice.
> ;)
>
Gotcha that time, eggs. :p

Steveo said:

> eggsUNDERSCOREHEREzachtly [at] hotmail.com wrote:
>> rgr that. I was referring to those that constantly give out bad advice.
>> ;)
>>
> Gotcha that time, eggs. :p

Heh. =P

Dood... I like yer style. =)

--
Eggs
..sig not found. (A)bort, (R)etry, (F)ail?

eggsUNDERSCOREHEREzachtly [at] hotmail.com wrote:
> Dood... I like yer style. =)
>
I may be totally wrong but I'm a dancing fool. ($1 F Zappa)

Steveo wrote:
> eggsUNDERSCOREHEREzachtly [at] hotmail.com wrote:
>> Dood... I like yer style. =)
>>
> I may be totally wrong but I'm a dancing fool. ($1 F Zappa)

A Zappa fan?
Heheh, I knew there was somethin' I liked about you.

Uncle Remus <sfsf>

Rapid wrote:
> Stubby wrote:
>> trader4 [at] optonline.net wrote:
>> <.....>
>>
>>> Yes, the ag extension guy said pre-emergent applied again late summer
>>> would help control it.
>>
>>
>> That's bogus. Preemergent controls prevent the seeds from sprouting
>> in early spring. In order to kill the plants before they set seed in
>> summer/fall, use a crabgrass killer several times.
>
> you are partially correct. preemergent controls prevent seeds from
> sprouting, period.
Of course, you're right. However, in the late summer crabgrass plants
are mature and setting seed. We don't want those seeds to hit the
ground. So, we kill the plants. I may be wrong, but that's why Ortho,
Bonide and other companies produce "crabgrass killers". In my
experience they work very well when applied according to the directions.

Steveo wrote:
> trader4 [at] optonline.net wrote:
> > Steveo wrote:
> > > Stubby <William.Plummer [at] alum.mit.edu> wrote:
> > > > trader4 [at] optonline.net wrote:
> > > > <.....>
> > > > > Yes, the ag extension guy said pre-emergent applied again late
> > > > > summer would help control it.
> > > >
> > > > That's bogus. Preemergent controls prevent the seeds from sprouting
> > > > in early spring.
> > > >
> > > They do the same thing in late summer, brainiak.
> >
> > Funny how he thinks applying it in late summer is no good, but applying
> > it several times is a great idea.
> >
> I didn't know pre-emergent herbicide could read a calender.... someone
> better tell preen. :)
> >
> > When are we supposed to apply it
> > then, 3 weeks in a row in April? LOL
> >
> Know what too much will do? Root prune the desirables.
>
> Like I told you before your extension guy did, timing is critical with that
> approach. Too soon can root prune, and too late won't work. You'll still
> end up with some of it.


Who exactly are you addressing this comment to?

Stubby wrote:
> Rapid wrote:
> > Stubby wrote:
> >> trader4 [at] optonline.net wrote:
> >> <.....>
> >>
> >>> Yes, the ag extension guy said pre-emergent applied again late summer
> >>> would help control it.
> >>
> >>
> >> That's bogus. Preemergent controls prevent the seeds from sprouting
> >> in early spring. In order to kill the plants before they set seed in
> >> summer/fall, use a crabgrass killer several times.
> >
> > you are partially correct. preemergent controls prevent seeds from
> > sprouting, period.
> Of course, you're right. However, in the late summer crabgrass plants
> are mature and setting seed. We don't want those seeds to hit the
> ground. So, we kill the plants. I may be wrong, but that's why Ortho,
> Bonide and other companies produce "crabgrass killers". In my
> experience they work very well when applied according to the directions.


If you follow the thread, the discussion about applying pre emergent
again in late summer was to control poa trivialis, not crabgrass.

"Dan" <daniel.frese [at] verizon.not> wrote:
> Steveo wrote:
> > eggsUNDERSCOREHEREzachtly [at] hotmail.com wrote:
> >> Dood... I like yer style. =)
> >>
> > I may be totally wrong but I'm a dancing fool. ($1 F Zappa)
>
> A Zappa fan?
> Heheh, I knew there was somethin' I liked about you.
>
> Uncle Remus <sfsf>
>
Goin' to Montana! <crash>

trader4 [at] optonline.net wrote:
> Steveo wrote:
> > trader4 [at] optonline.net wrote:
> > > Steveo wrote:
> > > > Stubby <William.Plummer [at] alum.mit.edu> wrote:
> > > > > trader4 [at] optonline.net wrote:
> > > > > <.....>
> > > > > > Yes, the ag extension guy said pre-emergent applied again late
> > > > > > summer would help control it.
> > > > >
> > > > > That's bogus. Preemergent controls prevent the seeds from
> > > > > sprouting in early spring.
> > > > >
> > > > They do the same thing in late summer, brainiak.
> > >
> > > Funny how he thinks applying it in late summer is no good, but
> > > applying it several times is a great idea.
> > >
> > I didn't know pre-emergent herbicide could read a calender.... someone
> > better tell preen. :)
> > >
> > > When are we supposed to apply it
> > > then, 3 weeks in a row in April? LOL
> > >
> > Know what too much will do? Root prune the desirables.
> >
> > Like I told you before your extension guy did, timing is critical with
> > that approach. Too soon can root prune, and too late won't work. You'll
> > still end up with some of it.
>
> Who exactly are you addressing this comment to?
>
You. trader4 [at] optonline.net