Just thought I'd share this with you: when I potted up my baby tomato plants, one of them snapped off near soil level. I pushed it down into the compost, but was running out of space in the mini-greenhouse, so I left the damaged one out on the ground in its pot. It's an outdoor variety (Maskotka) but this was only mid-April.
I took good care of the other tomatoes, putting bubble-wrap around them on cold nights. At the end of May I planted them out in the bed, and noticed that the "runt" was still alive. So I found a spot for it in another corner of the garden, just to see if it would survive. And guess what? It's now the bushiest and greenest of all my tomato plants.
So maybe we don't need to mollycoddle our plants so much. This one has been injured, left for dead and exposed to the elements since April, and it's thriving!
Has anyone else had an experience like that? -not personally! (left for dead, etc) - but with a supposedly tender plant that turns out to be a toughie?