Personally, giving up is not in my vocabulary. If it was impossible to grow a banana in San Diego, then I probably wouldn't bother trying. But, the world seems to have screwed up it's own weather so badly that none of the rules of thumb from just 10 years ago seems to apply, so adjustments must be made. Hardier varieties, adopting some form of protection for vulnerable varieties, accepting the realities of climate change come to mind. However, if it was me, I would trim back all damaged vegetation to at least 1 inch of green unfrozen material, cut away any frozen leaves, maintain as much of the p-stem as possible while removing any frozen part. I would leave the plants alone for a couple days so you can correctly determine the actual extent of frozen tissues. But give up.....never!
