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Need herbicide that doesnt kill my wildflowers

Posted on 1/5/26 at 11:42 am
Posted by trident
Member since Jul 2007
4845 posts
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Posted on 1/5/26 at 11:42 am
I need some guidance on how to kill the st augustine grass that has crept into my wildflower patch.

I purchased LINK these seeds about 2 years ago and it is coming in nicely but the st aug grass is taking over some ground cover.

Any suggestions??
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Posted by cgrand
HAMMOND
Member since Oct 2009
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Posted on 1/5/26 at 12:04 pm to trident
the answer is at the end of your arms.
st aug is easy to control just by pulling it up. a gardening fork also helps loosen the runners
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Posted by Zappas Stache
Utility Muffin Research Kitchen
Member since Apr 2009
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Posted on 1/5/26 at 1:45 pm to trident
20% vinegar solution w/ a cup of salt and tbl of dawn dish soap per 1 gallon. It doesn't kill to the root but will knock down whatever you spray it on. I use it once a month or so to control weeds in my NoMow yard. This time of year you could also use roundup as long as you just spray the SA.
This post was edited on 1/5/26 at 1:47 pm
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Posted by AyyyBaw
Member since Jan 2020
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Posted on 1/5/26 at 4:51 pm to trident
You can use a grass specific herbicide but it’ll kill your native grasses in that mix also. Depends how bad the infestation is but manual weeding would be best if feasible. If you use herbicide just spot spray with low pressure and a cone around the nozzle tip.
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