St. Augustine Grass
Q.

Safe for St. Augustine grass?

Zone 75019 | carlsndfw added on April 13, 2015 | Answered

Are sugar and vinegar safe to use on St. Augustine grass?

A.
A.Answers to this queston: Add Answer
shelley
Certified GKH Gardening Expert
Answered on April 14, 2015

You could spot-treat weeds with vinegar, but I would advise against using vinegar on your entire lawn because vinegar is non-selective and would probably burn the grass. In fact, vinegar is touted as a means to kill grass naturally on our website:
https://www.gardeningknowhow.com/plant-problems/weeds/how-to-kill-grass-naturally-kill-unwanted-grass-in-your-yard.htm

Sugar, on the other hand, is probably okay. You can read more about sugar weed control at the following link:
https://www.gardeningknowhow.com/special/organic/using-sugar-to-kill-weeds.htm

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