I don't think they're as difficult as you might think 'cos someone near to me has several lovely clumps in their garden & I don't see them giving them much attention (unless they garden in the dark!).Here's a couple of links that I hope will help...if they work
link1link2
I have them growing in damp shade, my aunt has them growing in full sun with good soil, and my sister in law has them practically in hard packed sand and dappled shade so I dodn't hink you'll have any problems where you put them!