Question to everyone with a green thumb:
Since the garden is still going to be newly established, I still have various small plants, some lilacs, and a few berries in pots. Last year I brought them into an outbuilding and overwintered them there. It worked reasonably well with the lilacs, but some other plants died on me.
Due to lack of space, I would like to overwinter some plants in polytunnels this year. Can they withstand the temperature fluctuations inside? On sunny days, I think it will get quite warm in there, but at night it will be correspondingly cold?
And photos, so I'm not just off-topic (yes, unfortunately I don't really have a green thumb... ;))
