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The last few years, I have had persistent grass growth in my vegetable garden. I till the area each fall and spring, and pull out and discard all the vegetable plants. For the first couple of months, its easy to control the weeds and grass, then about 2/3 of the way through the summer, the grass starts to take over. By the time I pull out the plants in the fall, I practically have a lawn underneath them. Now that everything is pulled up, should I spray Round-up or another grass killer on the entire garden area? Or is there a better way to control the grass?

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A

Now that you have pulled up your vegetable plants, it is an excellent time to spray the grass weeds with RoundUp.  You will need to do it quickly, while the grass is still actively growing.  RoundUp contains glyphosate which is a growth regulator- it only works on actively growing plants.  It makes the plants grow so quickly that they starve to death.
The glyphosate will bind with the soil on contact and make it safe to plant vegetables next year.  Be sure to rotate your vegetable plants by family to help discourage pests and diseases.  Most pests and diseases can’t stay in the soil for 3 or 4 years without a host and survive. You might put a barrier down around the outside of your vegetable garden to keep out the grass for next year.
I hope this information will be of help to you.

Posted on 6 Nov 2007

Julia Tuck
Horticulture Assistant, Utah county

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