Flower advice for the shade

Hi,

I'm new to hear at took over an allotment last year.  This year has simply been a trail and error session. 

Running along the side of my poly tunnel is a path with a small border separating the two, the only down side being is that this area is always shaded by the polytunnel.  I would like nest year to line this border with some flowers but don't know which would be best suited for an area that is shaded so much albeit light does come through due to the plastic covers of the tunnel.

Does anyone have any advice please that could assist me.

Thanks

Stu

busy lizzies, fibrous rooted begonias, foxgloves(!), french marigolds....
......or if enough space how about a few clumps of hostas!

Thanks for the quick replies guys

I know I have time on my side until next year but already you've given me things to look into

Thanks again

Stu

If you don't want to put flowers, I always use the shady space alongside my polytunnel for parsley. They love the increased dampness because of the rain coming off the side of the tunnel and grow really well.