Last summer this plant showed up in my garden and developed into a mound of leaves coming out from the ground (no stalk) but this spring it has started out by growing these 3' stalks with white flowers. The flowers just started opening this week but most of the stalks have already been beaten down by the rains. Normally I pull things out that just 'show up', really, but I guess I took a fancy to this one. Now I'm trying to determine if I fancy it in the compost pile instead. Thanks!