I know it isn't safe to can frost-bitten tomatoes because their acidity decreases. What about canning other frost-bitten vegetables?
When produce is damaged by frost, it deteriorates quickly. If vegetables have been frost-bitten, gather them immediately the morning after the frost and can them. Frost-bitten vegetables should not be canned if they have begun to soften or spoil in any way.
Source: Personal communication with Dr. Gerald Kuhn, Food Scientist, Penn State University, June 1989
Last update: Tuesday, May 05, 2009