North facing balcony

 
Hello Gardening Experts,

I have a balcony facing north (20' east of north, only a couple of hours
of sun first thing in the morning), and am in zone 6. Any ideas of what
would do well? Ideally I'd like some greens (lettuces/spinach/salad
stuff).  Anything else that might do well? I think columbines might, what
about lilies? Pansies?

Cheers

S