my new guineas were left out and got frost bit. Most of the plant is done but there are some (what looks like) new shoots that were not damaged can i cut off the dead part ,or will that kill the plant all together?Any help Please. Thank you.
You can remove the damaged part. It will go completely mushy very fast and you can get rot spreading to any unaffected parts. I'm not sure how successful you will be at saving it, but good luck.