Posted: 01/11/2013 at 13:49
Yes the yellow flowering thing is a wallflower.
Save seeds still in pods for July next year. Its too late to sow this year to have flowers next year.
I think your little seedlings are weeds. I can see at least two of the euphorbia (weed) family. Seedling wallflowers have long leaves by the time they get to three or four leaves.
Hope that helps.