This can apply to all plants edible or flowers, at this time of year we all want to get things planted and sometimes take a chance with the weather. If you have planted out tender plants and suddenly find we have had a frost and your plantswere not protected, if you can get out before the sun gets on the plants and using water from a butt, not tap water, and you spray over the frozen plats you can thaw them safely. You must not use warm water or you will badly damage them. I have saved many plants in this way.