Posted: 20/11/2017 at 20:39
Hi andi ... I've received your message where you tell me that you "live in northern indiana, and get much lake effect winter weather, would they survive in the winter in the planter? Ground is already frozen so transplanting is not an option."
This is a UK based forum and most of us live in the UK and Northwest Europe .. here in Great Britain Brussels sprouts seem to enjoy the worst the British winter can throw at them and crops are rarely lost, even when they stand covered in snow for quite a while.
However, I'm not familiar with the weather in northern Indiana, other than the fact that you can have long hard winters.
Perhaps this may be of help
If you decide that they're not going to cope with your winter weather I would certainly harvest them and cook and enjoy them ... if they're tiny why not try them in a stirfry?