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ronk
Member since Jan 2015
2365 posts
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re: When are you applying your pre emergent?
Mine will be different than most just due to me being in Dallas and with tif bermuda. On centipede I like simazine in the fall around the last week of September/first week of October. If I know I have a particularly weedy lawn I’ll follow it up with another app in November.


unclejhim
LSU Fan
Folsom, La.
Member since Nov 2011
2530 posts
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re: When are you applying your pre emergent?
This summer I had my yard hydro seeded (50% bermuda & 50% centepede) and I laid some sod. How long should I wait to use any pre-emergent?


ronk
Member since Jan 2015
2365 posts
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re: When are you applying your pre emergent?
If it was June or July you’re fine. As long as the roots are more than 1/2 inch deep.


bnb9433
New Orleans Saints Fan
Member since Jan 2015
7055 posts
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re: When are you applying your pre emergent?
Applied Prodiamine yesterday on my st aug. Fairly new sod as it was laid early June in Katy Tx. What is recommended for spot treating broadleaf and/or grassy weeds if they do pop up in the winter?
This post was edited on 10/4 at 7:03 am


unclejhim
LSU Fan
Folsom, La.
Member since Nov 2011
2530 posts
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re: When are you applying your pre emergent?
Thanks


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LSUDbrous90
LSU Fan
Lafayette
Member since Dec 2011
1153 posts
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re: When are you applying your pre emergent?
I applied Prodiamine on friday. Do you have to water it in since it was dissolved in water and sprayed?


CrawDude
LSU Fan
Baton Rouge
Member since Apr 2019
2551 posts

re: When are you applying your pre emergent?
quote:

I applied Prodiamine on friday. Do you have to water it in since it was dissolved in water and sprayed?


Yes you do - at least 1/2 inch of water within 2 weeks of application, that is stated on the label. The herbicide needs to be thoroughly washed into the soil where the weed seeds are located.

So I would water it in with a sprinklers ASAP, like today, as the 5-day avg soil temperature (BR) is 71, and some winter weed seeds like Poa annua germinate at soil temps of 70 F.
This post was edited on 10/4 at 8:38 am


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CrawDude
LSU Fan
Baton Rouge
Member since Apr 2019
2551 posts

re: When are you applying your pre emergent?
quote:

Applied Prodiamine yesterday on my st aug. Fairly new sod as it was laid early June in Katy Tx. What is recommended for spot treating broadleaf and/or grassy weeds if they do pop up in the winter?

Personally, depending on the weeds, I routinely use this during winter. For spot spraying I’ll mix it in 1 gallon of water.



GeauxPack81
California Fan
Member since Dec 2009
9865 posts
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re: When are you applying your pre emergent?
I still have some summer weeds, and I plan on spraying them with MSM. I also need to put down pre-emergent too. Can I put these both down back to back or do I need to wait a day or 2 in between?

shite I also need to do one last round of fertilizer. I don't want to stress my lawn too much though.


CrawDude
LSU Fan
Baton Rouge
Member since Apr 2019
2551 posts

re: When are you applying your pre emergent?
quote:

still have some summer weeds, and I plan on spraying them with MSM. I also need to put down pre-emergent too. Can I put these both down back to back or do I need to wait a day or 2 in between?


Yes, no need to wait.

quote:

shite I also need to do one last round of fertilizer. I don't want to stress my lawn too much though.


Where you located and what type of grass? It’s really to late in the year to add additional high nitrogen fertilizers, a so-called winterizer fertilizer, high in potassium with low or no nitrogen and no phosphorus would be acceptable to strengthen the lawn going into winter. Winterizer fertilizers need to be applied now to be absorbed by the lawn before it goes dormant.


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GeauxPack81
California Fan
Member since Dec 2009
9865 posts
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re: When are you applying your pre emergent?
BR, St. aug.

I guess I don't need to do fertilizer. Just saw it on the calendar I've been following. I already applied twice, once in the spring and once in the summer.


CrawDude
LSU Fan
Baton Rouge
Member since Apr 2019
2551 posts

re: When are you applying your pre emergent?
quote:

BR, St. aug.

I guess I don't need to do fertilizer. Just saw it on the calendar I've been following. I already applied twice, once in the spring and once in the summer.

Just checking to make sure you weren’t in south FL - I think they can still fertilize St Aug in Oct with high N fertilizers down there.

Site One in BR sells a 5-0-20 that would acceptable to use now, ASAP, that ronk says would be acceptable as a fall applied winterizer but I checked their website and it seems they are out of stock. But if your lawn looks decent I don’t think there is a strong compelling reason to use one now.


GeauxPack81
California Fan
Member since Dec 2009
9865 posts
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re: When are you applying your pre emergent?
For the most part it's fine, the sod webworms hit some spots though. I'll probably just leave it alone.


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Pooswa
LSU Fan
Member since Jul 2018
75 posts

re: When are you applying your pre emergent?
quote:

That would be fine provided you don’t exceed the 9 lbs/1000 sq ft total of Dimension, but why don’t you use Prodiamine since you have it. Just don’t exceed the 0.4 oz (1 1/2 teaspoons) per 1000 sq ft. ( I assume you ordered the spray version).


Got my back yard done this past weekend. I can get the front yard done today or tomorrow But should I worry about the storm coming washing it out?


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Rocklicker
Member since Aug 2016
24 posts

re: When are you applying your pre emergent?
Is it a bad idea to put down pre-emergent (granular dimension) right now before this hurricane hits? Is too much rain a bad thing? Will it wash it all away? Or does it soak in?
Prairieville.


DeoreDX
Member since Oct 2010
3412 posts
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re: When are you applying your pre emergent?
quote:

Is it a bad idea to put down pre-emergent (granular dimension) right now before this hurricane hits? Is too much rain a bad thing? Will it wash it all away? Or does it soak in?
Prairieville.


I was literally here to make this exact same post.


CrawDude
LSU Fan
Baton Rouge
Member since Apr 2019
2551 posts

re: When are you applying your pre emergent?
quote:

Is it a bad idea to put down pre-emergent (granular dimension) right now before this hurricane hits? Is too much rain a bad thing? Will it wash it all away? Or does it soak in?
Prairieville.


This was my response to the same question in a thread down below.

“Personally, I’d put it down before the storm, ASAP, as it needs to be watered in anyway, and the 5-day average soil temps in BR is right at 70 F, the temperature at which some winter weed seeds like annual bluegrass (Poa) germinate. I know the forecast is for as much as 3 inches of rain on Friday (BR area) but I’d put it down anyway to have it watered in by Thursday.”

Possible some may have a different opinion.


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ronk
Member since Jan 2015
2365 posts
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re: When are you applying your pre emergent?
Most pre em’s are made to be watered in the soil at about a half inch and then binds with the soil. Theoretically if you still have dirt you still have pre em.


TigeRoots
New Orleans Saints Fan
Member since Oct 2008
6999 posts
 Online 

re: When are you applying your pre emergent?
Got my Prodiamine in today and measured my spray rate, etc for 1,000 sq.ft. Do I need to agitate these granules a certain way or just shake my handheld sprayer?
This post was edited on 10/6 at 6:00 pm


CrawDude
LSU Fan
Baton Rouge
Member since Apr 2019
2551 posts

re: When are you applying your pre emergent?
quote:

or just shake my handheld sprayer?

If there is an easier and better way than this, I’d like to hear it as well. Ditto goes for backpack sprayers.


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