Dear Jim Mc and all - I thought we sort of beat Ipheion to "death" over various discussions. One recollection was that I never knew of any self sewing in colder climates. I assume these are akin to 'Wisley Blue' or typical unflorum. I wonder if this is the result of multiple clones to start with? Are commercial stocks all propagated clonally? Do I need seedlings to encourage its weediness? As for hardiness of 'Alberto Castillo'. I have it outdoors for years and it is the best and extremely hardy. A no-brainer. All the uniflorums are hardy here except for 'Rolf Fiedler' and 'Froyle Mill' which may not be uniflorum. I wouldn't bother with 'alba' since Alberto is the best. I have not yet tried 'Jessie' a new dark blue, but will when I can get a few bulbs in my hands. Yet I still see an occasional reference to their lack of hardiness in my zone. Alas. 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 +