Hello everyone! Newbie gardener here. I live in central Alberta Canada, Zone 3. I am in the process of hardening off my plants, and last night was the first night I left my plants outside overnight (in a greenhouse) the temperature got down to approx 4C. when I opened the greenhouse this morning (it gets morning sun) it was already nearly 22C in there. Most of my plants seem okay but my sunflowers are wilty, and mostly, my tomatoes - they are bent nearly in half! They are in peat pots currently, in a tray that also has dirt(because there were so many roots growing through the pots!). The soil is very moist. I'm hoping there is something I can do to save them! They were my strongest, healthiest looking plants up until this morning.
Any advice is greatly appreciated!!