Is a rare gift in the woodland area of my gardens. It shows up suddenly. Blooms for scarcely a week. Is easily missed if I am distracted or my hunt's timing for its delicate white blossom and unfurling leaves is off by even a few days. I introduced it 15 years ago, and wondered for sometime where it went--doubtless due to a single bloom or two escaping my attention. Now, in a colony of a dozen or more rhizomes, it is easier to catch... to enjoy!