Posted: 30/10/2013 at 01:58
Oops - apologies to all! I was told they were marigolds but if they are plants then they must be calendula. I don't know much about marigolds/calendulas (I think that's pretty obvious by now!) so sorry for misleading everyone.
I feel more confident about putting them outside now, planted in the garden rather than in a pot as I think this may offer better protection against frost.
Thank you for taking the time to help me out - it is much appreciated.