Dear PBSers, Last weekend we we went to Omaha and saw a big plant of an obvious Dioscorea at Lauritzen Gardens. I did not recognize the species, but it is obviously fully hardy that far north. It has three-winged papery seed pods in a chain along the stem and there were seedlings at the base of the vine. A quick Googling came up with D. caucasica, but does anyone grow or know this one? I notice there are NO hardy Dioscorea on the wiki. Appreciate any experience. I have emailed the garden for an ID, but appreciate hearing of experiences. Best Jim W. -- Dr. James W. Waddick 8871 NW Brostrom Rd. Kansas City Missouri 64152-2711 USA Ph. 816-746-1949 Zone 5 Record low -23F Summer 100F +