Wilting plants. Help!!
Ok, so I have many varieties of cabbage, collards and broccoli planted out in different areas of my garden. Some plants are in the actual ground, some are in raised beds that are on the ground and a couple are in actual raised beds that make no contact with the ground. Well here lately, the weather has been rather warm (in the upper 70's to low 80's for highs and in the upper 50's and lower 60's for lows). During the day the plants would wilt some in the sun, but would perk up once the shade or nighttime came. All of them not just ones in a particular area, so I contributed that to the heat. Well yesterday we had a cold front come through with plenty of rain. Yesterday morning it was 71 degrees. Last night (less than 24 hrs later) it got down to like 32-33 degrees and my plants got a light frost on them. Nothing too heavy. All these plants are past the seedling stage and most even have heads beginning to form. Well once the frost came off and the sun got on my plants most of them are completely wilted and it is only like 50 degrees outside. I am going to see if they perk up after the sun gets off of them, but I am hoping they recover. What happened? Could it be the temperature difference in that short of a period shocked them? What can I do to help them recover? Please help as I really don't want to lose these plants now! Thanks!