Zingiber mioga is totally hardy here too in lower Westchester County, NY, just north of NYC. A friend has had a sizeable patch for years in Bronxville, from which I got my plant, which after a few years is making a small patch as well. The pale yellow flowers appear in late summer, no special protection need be applied for winter thus far. Haven't tried hedychiums outdoors yet, so no comment on them. Ernie DeMarie Tuckahoe NY z6/7 plantblog http://geraniosgarden.blogspot.com/