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re: Is it time for pre emergent in South LA?
Posted on 2/2/20 at 10:23 pm to Bryant91092
Posted on 2/2/20 at 10:23 pm to Bryant91092
1
Posted on 2/3/20 at 6:38 am to Glock17
quote:
I’ve always heard mid February. I put down pre emerg for the first time last fall so I want to keep it going for the spring/summer
I'm putting prodiamine down this weekend coming
This post was edited on 2/3/20 at 6:39 am
Posted on 2/3/20 at 6:41 am to couv1217
quote:
What pre emergent is everyone using?
I use prodiamine, pennant magnum, simizine, and diythpor
If you yard is small members on the lawn forum does splits.
Posted on 2/3/20 at 6:42 am to CrawDude
quote:
That product is the dithiopyr (=Dimension) and that is an excellent price - comparable in price to the 50 lb bags of the LESCO brand of the same formulation I’ve been using, in fact maybe a few $ per bag cheaper. Don’t recall seeing at Lowe’s in BR - I’ll need to look.
It's much cheaper over the long run to spray
Posted on 2/3/20 at 8:52 am to Bryant91092
quote:
Probably a stupid question, but when folks say they’re using prodiamine, can someone link to what exactly you’re buying for your yard?
Here is an example of a common granular form of prodiamine. LINK
Of course of you don’t have to purchase it on line. Many retail plant nurseries may carry it, some hardware stores, etc. I believe “Barricade” is the most common trade name of the product.
Some have mentioned that some Lowe’s or Home Depot’s may carry it thoough I’ve not seen at those box stores near me. if by chance you live near a SiteOne Landscaping Supply store they carry a granular prodamine LESCO Stonewall 0-0-7. And there are liquid versions you can spray if you prefer that. The label on the front of the bag or container will have “Prodiamine” listed as the active ingredient.
Posted on 2/3/20 at 8:54 am to CenlaLowell
I have a gallon of Prodamine I am hoping to get out this weekend. Anyone have any idea if it will be effective against Dallisgrass? My two main problem weeds are that and button weed but there doesn't seem to be an recommended pre-emergent for either.
Posted on 2/3/20 at 9:49 am to Drunken Crawfish
quote:
I have a gallon of Prodamine I am hoping to get out this weekend. Anyone have any idea if it will be effective against Dallisgrass? My two main problem weeds are that and button weed but there doesn't seem to be an recommended pre-emergent for either.
Not really - both dallisgrass and Virginia Buttonweed (VBW) are perennial weeds that are able to reproduce/expand by means other than seeds, and pre-emergents kill seed embryos when they germinate. Doesn’t affect the other ways that Dallisgrass and VBW are able to reproduce and expand.
This is the best publication I’ve seen on controlling Dallisgrass Dallisgrass in Turfgrass
For VBW, try to spray when it’s young and emerging (before it produces flowers) for best control/supression followed up by additional applications as needed at 2 to 3 week intervals. Fertilome Weed-Free-Zone, MSM Turf (metsulfuron methyl), Celsius are all good options for VBW suppression but be sure to use a surfactant in the herbicide solution (2 teaspoons per gallon) to increase the absorption of the herbicide into the weed.
Posted on 2/3/20 at 10:02 am to CrawDude
I knew VBW is a lost cause on pre-emergent. I went through an entire bottle of Celsius last year trying to clear that and Dallisgrass out. Its shaping up to be another fun year.
Posted on 2/3/20 at 10:04 am to CenlaLowell
quote:
It's much cheaper over the long run to spray
Good point - and all following this thread should be aware that these pre-emergent herbicides being recommended can be purchased in either granular or water soluble (spray solution) products and both are effective.
I use granular only because of convenience in my lawn, but anyone who prefers the spray products should use them. Many stores only carry the granular pre-emergents and not spray products, but they can always be ordered online. SiteOne Landscape Supply carries both if you are lucky enough to have one near you.
Posted on 2/3/20 at 10:53 am to CrawDude
I have all kinds of crazy weeds 3 years ago my centipede grass was perfect in fall and spring, last year had what I assumed was fungus running rampant, I put down disease z in the fall again, but my yard has weeds all over the place right now in BR. Can I put down both a pre and post emergent today after I cut and bag the clippings
Posted on 2/3/20 at 11:01 am to BoxComboNoSlawXToast
quote:
Can I put down both a pre and post emergent today after I cut and bag the clippings
Posted on 2/3/20 at 1:14 pm to monteandmakers
One gallon only covers 1000sf?
Posted on 2/3/20 at 2:11 pm to BoxComboNoSlawXToast
quote:
I have all kinds of crazy weeds 3 years ago my centipede grass was perfect in fall and spring, last year had what I assumed was fungus running rampant, I put down disease z in the fall again, but my yard has weeds all over the place right now in BR. Can I put down both a pre and post emergent today after I cut and bag the clippings
Sure but just a little caveat to remember regarding the post-emergent, many weeds the herbicide is absorbed through the foliage, as opposed to the roots, and if you mow, then spray, you may not get max herbicide absorption but for lower growing weeds shouldn’t affect it. Either way, expect to re-spray in a 2 or 3 weeks, particularly older, mature weeds. Use surfactant in your post emergent spray to increase the absorption.
This post was edited on 2/3/20 at 2:21 pm
Posted on 2/3/20 at 2:26 pm to Drunken Crawfish
quote:
I knew VBW is a lost cause on pre-emergent. I went through an entire bottle of Celsius last year trying to clear that and Dallisgrass out. Its shaping up to be another fun year.
big yard and/or lots of weeds. I’m going on 3 years on the same bottle of Celsius but I use some other herbicides as well. Fortunately, I don’t have Dallisgrass but I have VBW but using Celsius, MSM Turf and Weed-Free-Zone (of course not at the same time) has really kept it in check. 
Posted on 2/3/20 at 2:53 pm to CrawDude
What about good ol' 2-4D and atrizine?
Posted on 2/3/20 at 3:45 pm to BankLSU
quote:
What about good ol' 2-4D and atrizine?
Sure - 2,4 D and Atrazine (Atrazine also has pre-emergent activity on some weeds) are good post-emergents herbicides for numerous broadleaf weeds and now is a good to apply them. The “Trimec” herbicides and “Weed-Free-Zone” also contain 2,4 D plus 2 or 3 other herbicides in combination, and oftener do better job than 2,4 D alone. Depends on types of weeds you have.
Posted on 2/3/20 at 8:19 pm to CrawDude
Man thanks for that I’ve literally cut my yard every time before putting anything down haha now I know better. Can I get all the stuff you recommended above at cleggs or somewhere local in Br? Going to try and put something down tomorrow before the rain later this week. I unfortunately ended up cutting my yard today, guess I’ll just have to reapply in a few weeks. TIA
Posted on 2/3/20 at 8:36 pm to CrawDude
I went ahead and bought some and will apply it to the yard in the next couple of weeks 
Posted on 2/3/20 at 9:05 pm to BoxComboNoSlawXToast
quote:
Can I get all the stuff you recommended above at cleggs or somewhere local in Br? Going to try and put something down tomorrow before the rain later this week. I unfortunately ended up cutting my yard today, guess I’ll just have to reapply in a few weeks
Yes, in Baton Rouge Cleggs will have everything recommended in this thread as will Louisiana Nursery. Also Site One Landscape Supply on Exchequer in the Industrialplex near Cleggs on Siegen will carry it. The pricing at SiteOne is excellent for the granular pre-emergents and for lawn fertilizers. They will also carry the liquid herbicides but often in larger containers than you might need. In those cases you can purchase the smaller containers of herbicides at Cleggs or LA Nursery.
Certainly other vendors may carry these products and I’m not meaning to exclude them, but Cleggs, LA Nursery and Site One are all within 10 minutes of my home so that where I shop.
P.S. Putting down pre-emergents before a rain is good as it needs to be watered in. Most post-emergent herbicides are “rain fast” within 4 hours.
Posted on 2/3/20 at 11:26 pm to CrawDude
Thanks for all the help appreciate it
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