late planted calabrese

In septemberish i sowed some calabrese to grow in tubs in g/house. They were coming along fine but then it turned grey..........and then it turned cold early, and growth slowed right up. They are quite sturdy plants now about a foot tall.
Question is will they just make their heads when it warms up a bit in spring or do i just throw them out now?

Promised to let you know

The calabrese has turned into sprouting broccoli with many little florets coming
instead of one head.........but at least a crop coming.
Looks like they'll just beat the time for the toms to go in g/h