Name: Sandy B. Ford River Twp, Michigan UP (Zone 4b) (Zone 4b-maybe 5a)
I guess it would be a little drastic, but you could move up here to northern Michigan - as far as I can tell it's next to impossible to kill a chive plant !
Are you growing them indoors or outdoors?
“Think occasionally of the suffering of which you spare yourself the sight." ~ Albert Schweitzer C/F temp conversion