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Topic Title: Commelina diffusa Aka spreading-dayflower
Topic Summary: How to eradicate!
Created On: 08/31/2021 07:11 PM
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 08/31/2021 07:11 PM
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KP

Posts: 3800
Joined Forum: 07/28/2006

I made the mistake of allowing a bird feeder in the yard and this plant has gained ground every year. (Too much area to handpick. And if it breaks it grows from remaining plant)

Would love to find what I can use to get it out of my st Augustine selectively. The front yard is free game for co-mingling. The back is small area I was trying to keep as a monoculture of st Augustine.


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Time and tide wait for no one.....

Edited: 08/31/2021 at 07:19 PM by KP
 09/01/2021 08:47 AM
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garcia

Posts: 1182
Joined Forum: 03/12/2007

Go with the green. It's easier to just let it go and better for the environment, too. Think of it as "greed" (green weed) and become one with it. Aooooooom, serenity now. As long as you keep it mowed it will look fine and the neighbors will oooh and aaah at how nice your yard looks.
 09/02/2021 06:39 AM
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Central Floridave

Posts: 50184
Joined Forum: 07/22/2003

It's near impossible to eradicate if it finds a place it likes. Same with that stupid purple flower crap Ruella. Never plant that one.
 09/02/2021 09:44 AM
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garcia

Posts: 1182
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No need to plant it, your neighbors will provide you all that you could ever want. (I rip it out as soon as it sprouts, but, it is a never-ending task.)
 09/03/2021 09:24 AM
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scombrid

Posts: 17002
Joined Forum: 07/24/2003

I've got ours down to a minimum with hand pulling and promotion of more desirable competitors. We quit irrigating and the plants that get pissed when we have our coastal summer mini-droughts are dying away by and by. Of course that means that the St. Augustine is about gone too and has been replaced with various sedges and basket grass, all of which go dormant in winter which means we do not have a 365 lawn. I am pretty sure that there are selective herbicides that kill dicots but not monocots that will get that stuff our of the St. Auggie but those herbicides are actually nastier than the broad spectrum herbicides like glyphosate.

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 09/03/2021 09:27 AM
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scombrid

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Originally posted by: Central Floridave It's near impossible to eradicate if it finds a place it likes. Same with that stupid purple flower crap Ruella. Never plant that one.
There is a native Ruellia that is a great plant mixed into a natural lawn. The bad exotic Ruellia is so invasive that it is on the Cat-1 don't plant it naughty list.

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Edited: 09/03/2021 at 09:27 AM by scombrid
 09/03/2021 09:38 AM
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scombrid

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null This is what we are promoting under our oaks since oak hammocks are its natural place. Beautiful right now. I have actually been able to get it to replace the spreading-day flower behind our shed by relentless pulling out the day flower and making sure that the basketgrass gets to seed every year.

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Edited: 09/09/2021 at 07:02 AM by scombrid
 09/05/2021 04:53 PM
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KP

Posts: 3800
Joined Forum: 07/28/2006

Thanks all.

Scombrid is this this plant?
Looks like I would need to ensure which species. What does it look like mowed at same level of st Augustine?


http://blogs.ifas.ufl.edu/polk...common-landscape-weed/

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Time and tide wait for no one.....
 09/09/2021 07:02 AM
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scombrid

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Joined Forum: 07/24/2003

That's it. Basket grass grows much lower than St. Augustine and the only mowing that is needed is to crop taller weeds that stick their heads up. But, Basket Grass is consider by most to be a lawn pest. It goes dormant in the winter and it will seed itself into any bare spots or beds where the mulch isn't tight. It naturally grows under oaks so if you have a shady area that needs summer ground cover it works.

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 09/09/2021 07:04 AM
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scombrid

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Joined Forum: 07/24/2003

Originally posted by: scombrid fixed the link to fnps This is what we are promoting under our oaks since oak hammocks are its natural place. Beautiful right now. I have actually been able to get it to replace the spreading-day flower behind our shed by relentless pulling out the day flower and making sure that the basketgrass gets to seed every year.


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 09/09/2021 07:51 AM
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scombrid

Posts: 17002
Joined Forum: 07/24/2003

Herbicide options per IFAS

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Edited: 09/09/2021 at 07:51 AM by scombrid
 09/11/2021 04:19 AM
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ww

Posts: 15291
Joined Forum: 08/17/2007

I've managed to keep Commelina diffusa in check with hand weeding. The yard is becoming shadier and some of the weeds are disappearing.
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