Dear PBS and Ellen, Good Question. Don’t know. I’ve tried a few in pots indoors over winter and haven’t followed through enough to say if it is better or worse. They come from ‘Continental’ climates and should do fine outdoors in your MA area without a problem. I do know they develop faster in the ground than in pots. Best Jim W. ps Curious…are L. squamigera common around there? On Nov 8, 2014, at 3:05 PM, Ellen Hornig <hornig@oswego.edu> wrote: > Do they need winter cold to germinate? How cold? > James Waddick 8871 NW Brostrom Rd Kansas City, MO 64152-2711 USA Phone 816-746-1949