Gardeners who patrol regularly for weeds may find the annual bentgrass growing among their vegetables. Because bentgrass spreads energetically and looks unsightly, take decisive eradication measures to ensure it does not choke out your vegetable plants. Bentgrass will rob your vegetables of water and nutrients, giving you fewer, smaller vegetables. So, it's important to kill the bentgrass as soon as you see it.
Pour several inches of glyphosate into the bucket to prepare to apply the glyphosate to the bentgrass.
Paint the stems and grass blades of the bentgrass with the weed killer. Apply the glyphosate liberally to all the foliage of the bentgrass growing above the soil level. Continue applying the glyphosate to every bentgrass plant you find growing in your vegetable garden.
Watch the progress of the bentgrass eradication. Over the next week, you should see the bentgrass begin to wither and die. If you do not notice the plants dying, proceed with another application of the glyphosate between three and four weeks later.
Pull up the dead bentgrass plants, getting as much of the root system as you can, after the plants die. Discard the bentgrass in the trash.