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UPDATE: St. Augustine Yard is a Weed Infested Disaster (Need Help)
Posted on 5/10/23 at 10:56 am
Posted on 5/10/23 at 10:56 am
I know there are a million threads on here, but they are tough to sift through. Here is my situation. Over the last 2 years, between the freeze and my kids destroying a few sprinkler heads, I did not run my sprinkler system (it is fully repaired and functioning properly now). That, along with me working out of town for a year until March and not being able to stay on top of it, caused my yard to turn to a many different type of weed infested mess. I also think I had chinch bugs in part of it at some point. I have clover, just discovered smooth crabgrass yesterday popping up everywhere, ponyfoot, aster, dandylions, virginia buttonweed, nutsedge, dallisgrass, etc. all over the place. I had it looking great a few years ago with just a small infestation of bermuda in the backyard, but it has turned to complete crap.
My question is, is there one product that I can use to take care of most of these in one or two applications? And if I can take care of the weeds, what do I need to do to give the St. Aug a chance at coming back strong in these areas? I am in the Houston area if that helps.
My question is, is there one product that I can use to take care of most of these in one or two applications? And if I can take care of the weeds, what do I need to do to give the St. Aug a chance at coming back strong in these areas? I am in the Houston area if that helps.
This post was edited on 6/15/23 at 7:00 am
5
Posted on 5/10/23 at 11:19 am to Marlo Stanfield
I had to rip out and resod when I screwed up my St Augustine turf…
Posted on 5/10/23 at 11:24 am to Marlo Stanfield
Im going to suggest you buy a bottle of Celsius Xtra herbicide (will control the vast majority of weeds you mentioned and the nutsedge) and follow label directions. If you do indeed have Dallisgrass (post photos) that will be more problematic but Celsius will help to suppress it - not kill it. Repeat spray application in 4 weeks and as needed thereafter.
Cut the St Aug at a height of 3 1/2 to 4 inches. If you have not fertilized, do so after you spray weeds, with a straight lawn fertilizer, not a weed and feed, at a nitrogen rate of 1 pound per 1000 sq ft. If you use a 25-x-x lawn fertilizer that would be 4 lbs per 1000 sq ft. Repeat in July or August.
This fall (late Sept/-mid Oct) use a pre-emergent herbicide, like Dimension or Prodiamine, and repeat again in late winter (early to mid Feb) - this will help with many weeds including the crabgrass. See the stickied lawn thread for suggestions on pre-emergents.
This should put you on the right track to resolving most of your weed issues. Patience and persistence - it’s a war, and not battle. Of course keep following the H&G board for suggestion/recommendations - many knowledgeable people on the board.
Cut the St Aug at a height of 3 1/2 to 4 inches. If you have not fertilized, do so after you spray weeds, with a straight lawn fertilizer, not a weed and feed, at a nitrogen rate of 1 pound per 1000 sq ft. If you use a 25-x-x lawn fertilizer that would be 4 lbs per 1000 sq ft. Repeat in July or August.
This fall (late Sept/-mid Oct) use a pre-emergent herbicide, like Dimension or Prodiamine, and repeat again in late winter (early to mid Feb) - this will help with many weeds including the crabgrass. See the stickied lawn thread for suggestions on pre-emergents.
This should put you on the right track to resolving most of your weed issues. Patience and persistence - it’s a war, and not battle. Of course keep following the H&G board for suggestion/recommendations - many knowledgeable people on the board.
Posted on 5/10/23 at 11:27 am to CrawDude
quote:
Celsius Xtra
Is that stuff worth the extra $? I was running low on Celsius and was looking last week at it. I don't really have any problems with sedges though so just got the regular stuff.
Posted on 5/10/23 at 11:35 am to BallsEleven
Just to add this to the discussion, I see they are selling Celsius in the individual pouch now.
Posted on 5/10/23 at 12:22 pm to RaginCajunz
Following since my yard may be in worse shape than the OP. Crawdude, I have a bottle of Celsius - can I mix it with Ferti-Lome Weed Free Zone and Hi-Yield Atrazine Weed Killer or is Celsius good enough by itself? (along with sticker spreader)
I suppose what I'm asking is if there is such a thing as a post-emergent weed cocktail.
I suppose what I'm asking is if there is such a thing as a post-emergent weed cocktail.
Posted on 5/10/23 at 12:25 pm to prestigeworldwide
quote:
Hi-Yield Atrazine
I heard the hi yield can nuke st aug. Any truth to that?
Following. My st aug is full of different weeds. I’m going to use the PictureThis app to ID them once things dry out.
This post was edited on 5/10/23 at 12:32 pm
Posted on 5/10/23 at 12:48 pm to prestigeworldwide
quote:
I have a bottle of Celsius - can I mix it with Ferti-Lome Weed Free Zone and Hi-Yield Atrazine Weed Killer or is Celsius good enough by itself?
Good enough by itself. Celsius WG is already a "cocktail" of sorts with several active ingredients.
Posted on 5/10/23 at 12:54 pm to billjamin
quote:
I heard the hi yield can nuke st aug. Any truth to that
Hi Yield is a brand, not a chemical. I'm sure Hi Yield makes some herbicides that will kill St. Augustine. Atrazine, though, is safe on St. Aug but for weed control this time of year, MSM Turf or Celsius are better options.
Posted on 5/10/23 at 12:58 pm to Sir Saint
Sorry I meant the hi yield Astrazine specifically. But I just read that on the internet after I used it last year and had lawn issues but that could have been drought or any number of other issues. I’m glad to know I don’t have to throw it out.
Posted on 5/10/23 at 1:19 pm to Sir Saint
I mix my Celsius with Sedgehammer for nutsedge and killinga control.
Posted on 5/10/23 at 1:21 pm to billjamin
quote:
Good enough by itself. Celsius WG is already a "cocktail" of sorts with several active ingredients.
Thanks Sir Saint
Posted on 5/10/23 at 1:31 pm to Sir Saint
Bout to kill mine in the front and get Zoysia. Tired of it here in Dallas.
Dogs have also completely ruined it in the back. Trying to decide if Zoysia is worth it or just go with actual turf and put a chipping green in.
Not sure any grass can survive 2 GSPs and the tracks they create.
That being said, Celsius is great and doesn't harm the St. Augustine. Closed on our house in April last year, weeds were everywhere, assume previous owner did no pre-emergent and it was fairly pristine by June.
Currently dealing with thatch, bare spots and probably some fungus/disease stuff right now. It's just a pain in the arse grass and probably not quite warm enough here in Dallas.
Dogs have also completely ruined it in the back. Trying to decide if Zoysia is worth it or just go with actual turf and put a chipping green in.
Not sure any grass can survive 2 GSPs and the tracks they create.
That being said, Celsius is great and doesn't harm the St. Augustine. Closed on our house in April last year, weeds were everywhere, assume previous owner did no pre-emergent and it was fairly pristine by June.
Currently dealing with thatch, bare spots and probably some fungus/disease stuff right now. It's just a pain in the arse grass and probably not quite warm enough here in Dallas.
This post was edited on 5/10/23 at 1:34 pm
Posted on 5/10/23 at 2:19 pm to CrawDude
Thank you! On the fertilizer, when you say 25-x-x is for 4 lbs per 1000sf, are you saying a need one that starts with 6.25 as the nitrogen number?
Holy shite, that stuff is $200.00 for a 10 oz bottle.
Holy shite, that stuff is $200.00 for a 10 oz bottle.
This post was edited on 5/10/23 at 2:35 pm
Posted on 5/10/23 at 3:03 pm to Marlo Stanfield
25-3-5, 24-2-4 something like that. It is the percent of nitrogen, phosphorus, and potassium in the mix. 4lbs per thousand gives you 1lb of N per 1000
Posted on 5/10/23 at 3:45 pm to ronk
Ah, ok. Ronk, what is your take on my original question? Same as Craw or do you have any alternate ideas?
Posted on 5/10/23 at 4:55 pm to Marlo Stanfield
Same as Craw. That why I didn't post my thoughts on what to do because it would have pretty much been a double post.
Posted on 5/10/23 at 5:15 pm to BallsEleven
quote:
Is that stuff worth the extra $? I was running low on Celsius and was looking last week at it. I don't really have any problems with sedges though so just got the regular stuff.
Well if you had problem with broadleaf weeds, grassy weeds and sedges, and didn’t have either Celsius or Sedgehammer, as the case of the OP, then I’d say yes it’s worth it. But I have nearly a full bottle of Sedgehammer already, but I’m running low on Celsius (year 5 on original bottle) so I’ll buy just Celsius, not the Xtra, when I run out.
Posted on 5/10/23 at 5:25 pm to prestigeworldwide
quote:
Following since my yard may be in worse shape than the OP. Crawdude, I have a bottle of Celsius - can I mix it with Ferti-Lome Weed Free Zone and Hi-Yield Atrazine Weed Killer or is Celsius good enough by itself? (along with sticker spreader) I suppose what I'm asking is if there is such a thing as a post-emergent weed cocktail.
As already stated use Celsius now or MSM Turf now, don’t use Weed Free Zone + Atrazine (= winter weed cocktail; getting too warm to use that “cocktail”), nor should you mix that cocktail with Celsius.
A good time to remind everyone, warm season lawn grasses are tolerant of these herbicides, not immune, if you overdose them, you’ll kill the weeds but also damage or kill your lawn grass. Don’t over do it - follow herbicide label directions. .
Posted on 5/10/23 at 5:40 pm to Marlo Stanfield
quote:
Holy shite, that stuff is $200.00 for a 10 oz bottle.
If you have Site One Landscape Supply nearby my app says Celsius Xtra is $166 and Celsius $125. and a bottle of Sedgehammer $70. You are going to need surfactant with these herbicides but it’s cheap.
Yes the upfront cost is “expensive”, but if you have a normal size residential lawn a bottle is going to last 5 years, so prorated $30 to 40 per year. No more expensive than less effective herbicides with a 1 year shelf life after opening.
If you wind up having to replace unhealthy St Augustine sod that going to be $250 or so a pallet = 450 sq ft.
Invest in the herbicides, it is worth it if you want to turn your lawn around.
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