How to Kill Bermudagrass Before Starting a Vegetable Garden

Bermudagrass (Cynodon dactylon) is a tenacious, rhizomatous weed that will choke a vegetable garden if not eradicated before planting. Plan on a minimum three-month process.

Step-by-Step Eradication

1. Define the area. Mark the future garden footprint, then add a 20-foot buffer zone around it.
2. Wait for full green-up in spring. Spray the entire area with a glyphosate-based product (e.g., Roundup Pro). No organic herbicide reliably kills bermudagrass; glyphosate has a favorable environmental profile when used as directed.
3. Wait 30 days. Surviving shoots will emerge. Spray again.
4. Wait 7 days, then till. Incorporate compost and lime as needed.
5. Wait another 30 days. Any weed seeds or rhizome fragments will sprout. Spot-spray.
6. Wait 7 more days, then plant. You’ll still have ample season for tomatoes, beans, and squash.
7. Ongoing vigilance. Flag any bermudagrass re-sprouts, spot-spray, and re-check in two weeks.

Do not underestimate this grass. Its deep rhizomes and aggressive runners make it one of the toughest garden invaders. Complete pre-plant elimination saves seasons of frustration.