Snow tonight

I am staying up late - I want to see what the temperature is at 11:00 p.m, I have to make a decision whether to put a small ceramic space heater in the greenhouse. We are supposed to get snow later tonight. I am sure the tomatoes and eggplant seedlings will not like that.

For sure my peach tree will probably lose its blossoms, and maybe the apple tree, too. The blossoms on the apple tree are just about to burst into bloom. I think that commercial growers used to burn tires in the orchard to keep the blossoms from freezing, but I don't see how to keep the smoke around the trees. I thought about throwing a tarp over the tree but read that sometimes covering actually are conductive and make the problem worse.