Name: greene Savannah, GA (Sunset 28) (Zone 8b) I have no use for internet bullies!
You could use small snips to cut the grass off at the soil line. That would slow the growth of the grass without disturbing the chive roots.
Edited to add link with photo.
Small thread snips can be purchased at a sewing store. They only cost about $1. Here is one type. http://www.allstitch.net/produ...
Sunset Zone 28, AHS Heat Zone 9, USDA zone 8b~"Leaf of Faith"