This year I have grown tomatoes and cucumbers in plastic bags - wide and
shallow - and they have done O.K.

I am now left with these containers for the winter.

I can just leave them, empty them (leaving a blot on the back garden where
they sat), or find a nice winter flowering bedding plant to cheer them up
until spring.

Not having that much success, though.

Do pansies and primroses flower through the winter?

Is there anything else obvious and 'off the shelf' which would do?

Cheers

Dave R