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Keeping St Aug out of Centipede
Posted on 4/4/20 at 7:57 am
Posted on 4/4/20 at 7:57 am
My back yard is 90% centipede but has patches of St Aug that are spreading like crazy. I’m mowing at 1.75 inches but the St Aug is still doing ok. Is there anything that kills it but doesn’t harm centipede?
6
Posted on 4/4/20 at 8:04 am to tigerlife36
quote:
My back yard is 90% centipede but has patches of St Aug that are spreading like crazy. I’m mowing at 1.75 inches but the St Aug is still doing ok. Is there anything that kills it but doesn’t harm centipede?
I have the same. Appears the problem is that Centipede grows well in areas that get plenty of sun but areas that are more shaded the St. Aug takes over. Ive even sprayed roundup on those areas and re-sodded with centipede in an effort to combat it but eventually the St. Aug returns.
Posted on 4/4/20 at 8:45 am to tigerlife36
Try sethoxydim sold under brand names (Fertilome Over the Top 11, Bonide Weed Beater, Hi Yield Grass Killer, etc). Needs to be mixed with oil concentrate. Will likely require multiple applications and expect some temporary yellowing of the centipede following application.
Used widely to kill Bermudagrass in centipede, but St Augustine is not tolerant as well although this is not stated on the product label.
Used widely to kill Bermudagrass in centipede, but St Augustine is not tolerant as well although this is not stated on the product label.
Posted on 4/4/20 at 2:08 pm to CrawDude
Wish I could upvote more. Sethoxodim (Segment) is your only shot. Light rate and repeated applications. You can go after a number of other weedy grasses with sethoxodim in centipede.
Posted on 4/4/20 at 3:15 pm to tigerlife36
I’d rather have the st aug than the centipede
Posted on 4/4/20 at 3:59 pm to tigerlife36
my backyard is about 80% centipede; It's nice and I'll enjoy it while it is there, but am accepting that the St. Aug will eventually win out. That's life in south LA.
Posted on 4/5/20 at 7:51 am to tigerlife36
I’m in the opposite track, trying to get the St. Aug to boot the Centipede.
Posted on 4/5/20 at 8:37 am to Icansee4miles
Best of luck! Fertilize the St. Aug and do two apps of MSM in late winter, early spring. Try to hit the centipede the day it starts to green up, then again 4 weeks later. 0.5 oz/acre rate.
After about 3 years of this you’ll have the yard you want.
After about 3 years of this you’ll have the yard you want.
Posted on 4/5/20 at 9:50 am to Goldbondage
Is it too late to hit it with MSM now (I suspect it is)? I’m going to fertilize and drop some lime this week, the St. Aug seemed to like the lime last year.
Posted on 4/5/20 at 10:33 am to Icansee4miles
quote:
I’m in the opposite track, trying to get the St. Aug to boot the Centipede
Making sure you cut the St Aug at the recommended height of 3 to 3 1/2 inches, along with recommended fertilization schedule for St Aug, will also help and speed up the process.
Posted on 4/5/20 at 10:38 am to Icansee4miles
MSM can be done all spring and summer
Posted on 4/5/20 at 10:48 am to jimbeam
MSM is a great product that can be used in spring and summer. I find centipede is susceptible to injury during greenup, however later in the growing season it is tolerant to MSM at the low rate.
Posted on 4/5/20 at 11:14 am to Goldbondage
Centipede is definitely going to be injured/killed if msm is used during green up. That’s what happened with the Scotts product 5 or 6 years ago.
Posted on 4/5/20 at 11:27 am to tigerlife36
Why do some people prefer centipede over St. Aug?
Posted on 4/5/20 at 11:38 am to BeepNode
Lower mowing frequency, and sethoxodim. Sedges don’t seem to colonize centipede as much. You can kill any weed out of it pretty easily, besides torpedograss. And it’s cheap.
I’d have St. Aug any day over centipede.
I’d have St. Aug any day over centipede.
Posted on 4/5/20 at 1:11 pm to BeepNode
I don’t think people prefer centipede over St Aug. Thats just what builders put down. Centipede doesn’t grow as fast and it’s cheaper.
Posted on 4/5/20 at 1:22 pm to BeepNode
Also centipede grows better in acidic soils, although acidic soils can be easily amended with lime, at not a great cost, to make them more suitable for St Augustine.
Posted on 4/5/20 at 2:09 pm to CrawDude
To me a tall stand of St Aug is tough to beat. I love the lawns in Florida that are cut at like 4-5 inches 
Some random google image, not my feet 
Some random google image, not my feet This post was edited on 4/5/20 at 2:19 pm
Posted on 4/5/20 at 4:18 pm to CrawDude
Something I have been thinking of doing, but not sure its effectiveness. My backyard has about 50/50 st aug and centipede. I want the st aug to win. If I slowly lime it to say a 7, would that help the st aug win quicker? Already cutting higher and fertilizing harder to help it.
Posted on 4/5/20 at 7:41 pm to jimbeam
Agree. Can't beat walking or even laying in a thick St Aug lawn.
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