Onion grass taking over

What is the best way to get rid of onion grass in a border? We've tried spraying with Roundup, but not much of an impact.
Submitted by antonia47172

Spray it again. There's really not much that Roundup won't kill, but plants with large or bulbous roots often survive a single attempt, so the key is to follow up again in 2-3 weeks. BUT, be careful and follow all instructions. As you probably know, Roundup will harm your desirable ornamentals too.


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