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Crab grass!
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 |
Crab grass!
"Chas Hurst" wrote in message ... 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. |
Crab grass!
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" wrote in message ... 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 |
Crab grass!
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. |
Crab grass!
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. |
Crab grass!
On Sun, 30 Apr 2006 07:09:31 -0400, Stubby
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 @ www.Consolidated-Loans.info |
Crab grass!
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" wrote in message ... "Chas Hurst" wrote in message ... 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. |
Crab grass!
"Chas Hurst" 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 |
Crab grass!
"Steveo" wrote in message ... "Chas Hurst" 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 |
Crab grass!
"Chas Hurst" wrote:
"Steveo" wrote in message ... "Chas Hurst" 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. |
Crab grass!
"Chas Hurst" wrote:
"Steveo" wrote in message ... "Chas Hurst" wrote: "Steveo" wrote in message ... "Chas Hurst" 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 |
Crab grass!
"Steveo" wrote in message ... "Chas Hurst" wrote: "Steveo" wrote in message ... "Chas Hurst" 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 |
Crab grass!
Tom The Great wrote:
On Sun, 30 Apr 2006 16:00:26 -0400, "Chas Hurst" wrote: "Steveo" 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/qu...grass_turf.jpg |
Crab grass!
On Sun, 30 Apr 2006 16:00:26 -0400, "Chas Hurst"
wrote: "Steveo" wrote in message ... "Chas Hurst" wrote: "Steveo" wrote in message ... "Chas Hurst" 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 @ www.Consolidated-Loans.info |
Crab grass!
"Steveo" wrote in message ... "Chas Hurst" wrote: "Steveo" wrote in message ... "Chas Hurst" wrote: "Steveo" wrote in message ... "Chas Hurst" 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. |
Crab grass!
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. |
Crab grass!
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. |
Crab grass!
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Crab grass!
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Crab grass!
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. |
Crab grass!
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. |
Crab grass!
wrote in message ps.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 |
Crab grass!
Chas Hurst wrote: wrote in message ps.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. |
Crab grass!
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Crab grass!
Stubby wrote:
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. |
Crab grass!
Steveo wrote: Stubby wrote: 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 |
Crab grass!
Steveo said:
Stubby wrote: 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. |
Crab grass!
wrote:
Steveo said: Stubby wrote: 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. |
Crab grass!
Stubby wrote:
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. |
Crab grass!
Steveo said:
wrote: Steveo said: Stubby wrote: 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! |
Crab grass!
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Crab grass!
Steveo said:
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? |
Crab grass!
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Crab grass!
Steveo wrote:
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 |
Crab grass!
Rapid wrote:
Stubby wrote: 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. |
Crab grass!
"Dan" wrote:
Steveo wrote: 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 |
Crab grass!
wrote:
Steveo wrote: wrote: Steveo wrote: Stubby wrote: 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. |
Crab grass!
Steveo wrote: wrote: Steveo wrote: Stubby wrote: 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? |
Crab grass!
Stubby wrote: Rapid wrote: Stubby wrote: 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. |
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