How to get rid of lawn so it won't come back?
I recently sprayed my lawn with some industrial strength roundup to kill it. I did two applications, about 10 days apart. It all turned yellow and I didn't see any sign of green afterward. (I plan to convert the front yard into a drought tolerant, native plant garden, I am in zone 10b, in southern California). After about 10 days after I did the 2nd roundup application, I hired a gardener to dig up the lawn and get rid of the grass. He used a sod cutter to do the work, I was not home while he did it so I didn't see how deep he was going, etc. After paying him, a couple days later I began looking deeper into the dirt and noticed some of the old lawn roots are still in there, as well as a lot of the green nylon mesh that was probably from the sod of the previous lawn. Should he have dug deeper down to get rid of all that? Did I get screwed? I am a bit concerned that the grass grow back, and want to know if anyone has had a similar experience that might guide me?