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sosaysmorvant
LSU Fan
Back Vacherie, LA
Member since Feb 2008
456 posts

Best selective herbicide for crabgrass
Best selective herbicide for crabgrass that can be used in the heat of summer. I have an area that I've been hand pulling with no real success. I'm afraid to just spot spray with the temps getting so high during the day. Talk to me.


meeple
USA Fan
Member since May 2011
6731 posts
 Online 

re: Best selective herbicide for crabgrass
Probably just going to have to deal w/ it and start your split application of prodiamine (fall / spring) preemergent. I had crabgrass, and after a year of prodiamine it was almost gone, and after two years it's completely gone.


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BallsEleven
LSU Fan
Member since Mar 2019
1945 posts
 Online 

re: Best selective herbicide for crabgrass
What kind of grass do you have?


sosaysmorvant
LSU Fan
Back Vacherie, LA
Member since Feb 2008
456 posts

re: Best selective herbicide for crabgrass
In the spot with the heaviest infestation, its St. Aug.....but I have one other trouble area that is centipede.


ronk
Member since Jan 2015
2114 posts
 Online 

re: Best selective herbicide for crabgrass
You can use Blindside but it will yellow your St Aug and centipede. I suggest picking a cloudy day and spray it before 7am. Spraying Blindside when temps are over 85 is going to increase the yellowing.


TheWiz
LSU Fan
Third World, LA
Member since Aug 2007
10796 posts
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re: Best selective herbicide for crabgrass
quote:

Spraying Blindside when temps are over 85 is going to increase the yellowing.


Better spray at 4am It's been scorching lately.


gamecocks22
South Carolina Fan
SC
Member since Dec 2012
4844 posts

re: Best selective herbicide for crabgrass
Tenacity if you need to spray the centipede and St. Augustine.

Vantage if you just need to spray the centipede


ronk
Member since Jan 2015
2114 posts
 Online 

re: Best selective herbicide for crabgrass
Tenacity isn't labeled for residential use on St Aug. It will turn your St Aug white. Though it is good.
This post was edited on 7/17 at 8:54 am


b-rab2
LSU Fan
N. Louisiana
Member since Dec 2005
11972 posts

re: Best selective herbicide for crabgrass
Celsius does a decent job.


BallsEleven
LSU Fan
Member since Mar 2019
1945 posts
 Online 

re: Best selective herbicide for crabgrass
quote:

Celsius does a decent job.


Temp limit with St Aug.

But I love that I have bermuda. Knocks out just about everything.


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gamecocks22
South Carolina Fan
SC
Member since Dec 2012
4844 posts

re: Best selective herbicide for crabgrass
You're right, I've had good luck with a 4oz/Acre rate though. Technically, I believe it is approved for St. Augustine use in sod farm, but not residential.

I should have included that in my post.

ETA: plus the bleaching effect is a cool phenomenon
This post was edited on 7/17 at 1:00 pm


ronk
Member since Jan 2015
2114 posts
 Online 

re: Best selective herbicide for crabgrass
It is approved for sod farms. There is nothing wrong with using it residentially except for white grass


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gamecocks22
South Carolina Fan
SC
Member since Dec 2012
4844 posts

re: Best selective herbicide for crabgrass
quote:

: plus the bleaching effect is a cool phenomenon



Check it out.



ronk
Member since Jan 2015
2114 posts
 Online 

re: Best selective herbicide for crabgrass
I mean it is pretty cool. Hoa’s probably wouldn’t like it though.


gamecocks22
South Carolina Fan
SC
Member since Dec 2012
4844 posts

re: Best selective herbicide for crabgrass


Good point


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RollDatRoll
Atlanta Braves Fan
Who Dat. Roll Tide.
Member since Dec 2010
12172 posts

re: Best selective herbicide for crabgrass
Just look for something with quinclorac as the active ingredient. Here is quinclorac on Amazon and it would last forever.


gamecocks22
South Carolina Fan
SC
Member since Dec 2012
4844 posts

re: Best selective herbicide for crabgrass
quote:


Just look for something with quinclorac as the active ingredient. Here is quinclorac on Amazon and it would last forever.


He has St. Augustine and Centipede so quinclorac is a no go


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ronk
Member since Jan 2015
2114 posts
 Online 

re: Best selective herbicide for crabgrass
It would last forever because it would never be used. Grass type is very important when using herbicides.


RollDatRoll
Atlanta Braves Fan
Who Dat. Roll Tide.
Member since Dec 2010
12172 posts

re: Best selective herbicide for crabgrass
Thanks...I missed that

quote:

Grass type is very important when using herbicides.


I know


ronk
Member since Jan 2015
2114 posts
 Online 

re: Best selective herbicide for crabgrass
Just giving you a hard time.


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