At this moment, the forecast for Saturday night in our area (Christian County, MO- west of Nixa) is a low of 30°f. I have about 300 tomato seedlings (about 4" tall) in my unheated greenhouse. I'm wondering at what temp they will be damaged, and if I should run some portable heaters out there all night. Perhaps I should just to be safe. I also have trays of other seedlings in there (okra, basils, thyme, sage, echinacea, peppers, squash, etc)

Also, does this type of late frost/freeze damage garlic, shallots, or red onions. All are in the ground and between 4 to 6 " tall.

What plants are you going to extra efforts to protect?

thanks,

mel