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CrawDude
LSU Fan
Baton Rouge
Member since Apr 2019
2437 posts
 Online 

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

Poa Annua is my primary winter problem.

Either the Prodiamine or Dimension will do a very good job on Poa. Used to be a major issue for me - no longer - probably eliminated 90% with granular Dimension and the 10% I do get is likely b/c of poor coverage of spots that the granular doesn’t reach, one reason I’m going with prodiamine spray this Fall.

Simazine application will also help greatly with Poa if you want to consider that as a follow up to prodiamine or Dimension in November. Downside of Simazine is you only buy it in 2 1/2 gal containers in the $100 range and not much is need per 1000 sq ft of coverage. But Simazine does have a long shelf life of about 5 years according to the literature I’ve reviewed. ronk can better elaborate on Simazine use.
This post was edited on 9/14 at 5:43 pm


CrawDude
LSU Fan
Baton Rouge
Member since Apr 2019
2437 posts
 Online 

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

Do these preemergents control clover or is that a whole other application? My yard was lousy with it last winter.

No - clover is a perennial (not annual) so post emergent control will be necessary. Fertilome Weed-Free-Zone + Atrazine is a good post-emergent control for clover, but there are other options as well. Clover is often a problem in non-fertlle nitrogen deficient soils. Maybe you should get a soil test analysis.


CrawDude
LSU Fan
Baton Rouge
Member since Apr 2019
2437 posts
 Online 

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

Im in Houston and have St Aug, had a little difficulty this year more so than normal with the little clover weed.

Curious what I should do to get rid of that as well as prevent it for next year?

Is it true clover or a weed that looks like clover - there are several that look like clover.


CrawKing
Member since Mar 2018
100 posts

re: When are you applying your pre emergent?
Thanks Crawdude.

If I plan on doing 2 pre emergent applications should I do one dimension and one prodiamine application or does it not work like that?


OysterPoBoy
LSU Fan
City of St. George
Member since Jul 2013
20936 posts

re: When are you applying your pre emergent?
Thanks, I plan to do a soil test one of these days. So I wait until I see some clover and spot treat?


TygerB8
LSU Fan
Youngsville
Member since Jul 2005
1183 posts

re: When are you applying your pre emergent?
Thanks CrawDude! I'll look for your suggestion around Lafayette for this year's application. I'm typically in Baton Rouge once every few months, so I'll make sure to stop by Site One and get a few bags of LESCO Dimension 007 for the next application in Feb/March.


OysterPoBoy
LSU Fan
City of St. George
Member since Jul 2013
20936 posts

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

Is it true clover or a weed that looks like clover


Mine looks like this.



ronk
Member since Jan 2015
2273 posts

re: When are you applying your pre emergent?
Yes, that is true white clover. Pretty easy to kill post emergently. Some people leave it because it does put a good bit of nitrogen back in the soil and also for the bees.


ronk
Member since Jan 2015
2273 posts

re: When are you applying your pre emergent?
If you have St Aug or centipede I would do either simazine/simazine or prodiamine/simazine. If crabgrass is a big problem in the summer then you can do a dimension pre em in the spring.


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CrawDude
LSU Fan
Baton Rouge
Member since Apr 2019
2437 posts
 Online 

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

I'll look for your suggestion around Lafayette for this year's application. I'm typically in Baton Rouge once every few months, so I'll make sure to stop by Site One and get a few bags of LESCO Dimension 007 for the next application in Feb/March


Its about $30/50 lb bag at Site One - considerably cheaper than the Hi Yield Dimension I was previously using and purchased at a local retail vendor.
This post was edited on 9/15 at 8:42 am


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OysterPoBoy
LSU Fan
City of St. George
Member since Jul 2013
20936 posts

re: When are you applying your pre emergent?
I wouldn’t mind it except it grows while the grass is still dormant and ends up making me cut a month or so early.


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TheBoo
Nicholls St. Fan
South to Louisiana
Member since Aug 2012
2786 posts

re: When are you applying your pre emergent?
Yessir.


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CrawDude
LSU Fan
Baton Rouge
Member since Apr 2019
2437 posts
 Online 

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

If I plan on doing 2 pre emergent applications should I do one dimension and one prodiamine application or does it not work like that?


Two applications this fall/winter? 8 weeks apart? Or one this fall and one this spring?

Both herbicides have a similar mode of action so I’m not sure how much of a difference it would make. But yes can use the same product, or alternate them.


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CrawDude
LSU Fan
Baton Rouge
Member since Apr 2019
2437 posts
 Online 

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

Thanks, I plan to do a soil test one of these days. So I wait until I see some clover and spot treat?

Yes - it’s what I do when it comes up in my yard but I only have a couple small patches in my front yard. If it appeared in my backyard I might leave for the pollinators.


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DukeSilver
Houston Astros Fan
Member since Jan 2014
1689 posts

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

Is it true clover or a weed that looks like clover - there are several that look like clover.


Just went out to look and honestly looks like I have a few of the Common Houston area weeds. They seem to have really come on in the last week or 2 I was somewhat weed free at least for the most part until recently.

Looks like I have a couple small spots like op has as well.
This post was edited on 9/14 at 6:16 pm


CrawDude
LSU Fan
Baton Rouge
Member since Apr 2019
2437 posts
 Online 

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

Just went out to look and honestly looks like I have a few of the Common Houston area weeds. They seem to have really come on in the last week or 2 I was somewhat weed free at least for the most part until recently.

Looks like I have a couple small spots like op has as well.

You could purchase MSM Turf (methsulfuron methyl) to spot treat weeds in this heat without damaging the lawn (maybe a little temporary yellowing where you spray), and you can always post pics if you need the weeds ID’d. It will control many common lawn weeds except sedges and some weedy grasses. Still to hot to spray something like Weed-Free-Zone.


DukeSilver
Houston Astros Fan
Member since Jan 2014
1689 posts

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

You could purchase MSM Turf (methsulfuron methyl) to spot treat weeds in this heat without damaging the lawn (maybe a little temporary yellowing where you spray), and you can always post pics if you need the weeds ID’d. It will control many common lawn weeds except sedges and some weedy grasses. Still to hot to spray something like Weed-Free-Zone.


Will do. I have those 3 chemicals to make that cocktail that's always posted on here, what's my protocol on when to use that? I guess when its colder? Anything I should do before I use that?
This post was edited on 9/15 at 9:17 am


CrawDude
LSU Fan
Baton Rouge
Member since Apr 2019
2437 posts
 Online 

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

Will do. I have those 3 chemicals to make that cocktail that's always posted on here, what's my protocol on when to use that?

The winter weed cocktail of weed free zone + atrazine + surfactant needs to be used when temps are no higher than 85 F, preferably a little cooler. The 2,4 D in the weed free zone will potentially kill lawn grass at high temps. Of course this cocktail can’t be used on Bermudagrass unless it’s dormant (atrazine will kill non-dormant bermuda).

You can use MSM Turf or Celsius herbicides on lawn weeds now in this heat without damaging the lawn (temporary yellowing might be expected). Your call if you think you should wait to use the cocktail, but the best time to treat weeds are when they are present, but ID the weeds first to make sure you are using the proper herbicide.


AyyyBaw
LSU Fan
Lafayette
Member since Jan 2020
216 posts

re: When are you applying your pre emergent?
A little off topic, but can the winter weed cocktail be used for weeds on a carpetgrass lawn? I know that Celsius will definitely kill carpetgrass, but I'm guessing that winter weed cocktail or MSM turf would be ok for spot treatment?


CrawDude
LSU Fan
Baton Rouge
Member since Apr 2019
2437 posts
 Online 

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

A little off topic, but can the winter weed cocktail be used for weeds on a carpetgrass lawn? I know that Celsius will definitely kill carpetgrass, but I'm guessing that winter weed cocktail or MSM turf would be ok for spot treatment?

Pretty sure it can but double check the labels on the weed free zone and atrazine. I used to have a little carpetgrass that I killed with with Celsius but prior to that I sprayed those areas with the winter weed cocktail and never noticed any damage to the carpetgrass.


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