OK, they're common as dirt, but I didn't believe they'd overwinter in the ground here. However, they're leafing out vigorously now, after our typical winter with 3 months of snow cover (December-March) followed by an atypical April with roughly twice as much rain as usual. They're planted on the south side of an unheated garage, where I assume they picked up some heat from the nearby concrete slab, but still - they made it! Next experiment: the open garden. Ellen Ellen Hornig Oswego NY 13126 USA USDA zone 5b