Got kind of a crappy shady spot with heavy clay soil you’ve never done one thing to improve? I have had the most tremendous luck with martagon lilies in such a spot. They are lovely when in bloom, multiply readily, and, unlike just about every other lily I’ve grown, NEVER need staking. There is a white variety, but I’ve found them to be a bit fussier. The better mail order places all have these. I’ve never seen them in a pot at a nursery or, indeed, as bulbs, so I think mail order is the best bet.
Oh, almost forgot. Their whorled foliage is actually an attractive feature, another first for a lilium. The foliage remains attractive (though I see I have a bit of yellowing here—should have pulled that off!) even after bloom. The only drawback is that their scent is .. ahem ..an acquired taste (one that I can’t imagine too many people acquiring). But they don’t actually stink.