In Britain they grow exra hardy clones, obtained from colder areas in the wild. 'Crowborough' is very well known. Z. aethopica is a marsh plant in the mild original habitat of the Cape and goes dormant in summer. True that in a WARM climate they remain evergreen if kept on well watered. > British garden books (the main kind we used to have) recommend > growing it as a shallow aquatic to enhance its winter-hardiness. I > sometimes see other callas offered as water-garden plants, but as far > as I know none of them is winter-hardy here in Zone 7 or 8, or > whatever we choose to number it." _________________________________________________________________ Gratis Internet Explorer 8 optimizado para MSN http://ie8.msn.com/microsoft/internet-explorer-8/…