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Is it too early/late to spray weeds and pre emergent in my yard?

Posted on 2/3/19 at 12:26 pm
Posted by Pintail
Member since Nov 2011
10444 posts
Posted on 2/3/19 at 12:26 pm
I have some coming up in St Aug grass. Is now the time, too early or too late?
Posted by jimbeam
University of LSU
Member since Oct 2011
75703 posts
Posted on 2/3/19 at 12:37 pm to
It’s probably warm enough to use some 2-4d at this point if you need. Not sure about pre emerge.
Posted by CottonWasKing
4,8,15,16,23,42
Member since Jun 2011
28626 posts
Posted on 2/3/19 at 12:48 pm to
I put out atrazine in November and then I put out atrazine with msma in February. But I have Bermuda

As far as I know my yard had never been sprayed before last year when I moved in so I’m playing catch up. I may or may not keep hitting it twice when I get them under control.

Just depends on how it looks
Posted by TheLSUriot
Clear Lake, TX
Member since Oct 2007
1504 posts
Posted on 2/3/19 at 2:16 pm to
Honestly don't know but I took a chance and put down weed free zone and prodiamine wdg yesterday. First time using prodiamine. Didn't know what to expect. That yellow shite made a mess.

Lost the battle to buttonweed last year and probably will again but not without a fight.
Posted by skidry
Member since Jul 2009
3264 posts
Posted on 2/3/19 at 2:52 pm to
This
Posted by TygerB8
Youngsville
Member since Jul 2005
1348 posts
Posted on 2/3/19 at 3:59 pm to
I also had to put down some weed free zone a week ago. I'm going to put down pre emergent later this month.
Posted by Spankum
Miss-sippi
Member since Jan 2007
56030 posts
Posted on 2/3/19 at 4:21 pm to
I would go ahead and apply the pre-emerge, as it has residual action...

I would wait until you see some good growth to spray though, as you only get good killing action when weeds are growing and that takes some warmer weather.
Posted by TygerB8
Youngsville
Member since Jul 2005
1348 posts
Posted on 2/3/19 at 6:42 pm to
Yeah, i would have put pre-emerg down this weekend but wasn't sure if it would somehow negatively react with weed free zone....playing it safe and waiting.
Posted by MikeD
Baton Rouge
Member since Jan 2004
7239 posts
Posted on 2/3/19 at 8:17 pm to
I put down pre emergent on Friday in BR. There were some good links on a thread a little further down that had a link to soil temperatures. Looks like we will be hitting mid 50s soon so you may not be too late.
Posted by pennypacker3
Charleston
Member since Aug 2014
2737 posts
Posted on 2/4/19 at 7:02 am to
Pre-emergents are mainly broken down by soil microbes. These micros are also controlled by soil temperature. If the soil temperature is cold, no microbe activity occurs and the chemical sits in the soil unaffected. With that said, going earlier not later is a good policy to follow.
Lot of times, especially in southern climates, split applications work best.
Posted by Drunken Crawfish
Member since Apr 2017
3823 posts
Posted on 2/4/19 at 9:03 am to
I sprayed a 20 gallon tank of Celsuis yesterday. I was lazy this winter with my lawn care and it is really showing.
Posted by FishinTygah84
LA
Member since Dec 2013
1976 posts
Posted on 2/4/19 at 3:14 pm to
i was literally googling "too early to weed n feed my yard" on Saturday. Moved to a new house and the backyard is full of random weeds and clovers. I generally spot kill weeds but this entire yard, front and back, will need a good weed n feed.

So is it too early to weed n feed? I've always waited until mid march or so. but this is out of hand
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