question 4: we've planted christmas roses in our shady area and they seem to love it. http://www.thegardenhelper.com/helleborus.html
and i've got a couple of seeds (really not very many, probably 4 or 5) if you'd like them.

EDIT: actually, also, have a look in the seed swap at my flower seed post - and if you want anything from there and i'll gladly send them on. you might not be interested in growing from seed, but perhaps a few annuals would give you some immediate gratification?