Its ok to leave them out but if the seedlings are kinda small the rain will beat them over I always put something over mine like the trays you get at the greenhouse that has all the holes in them so the rain can still water them but it keep the rain from hiting them so hard.

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Originally posted by ChristinaC:
When hardening off my tomatoes, should I leave them out when it's raining or is it best to bring them back inside? Thanx!
Christina

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