Tony Avent wrote a long list of Crinums hardy for him in central North Carolina. I am also in central North Carolina and am north and west of Tony so might be a few degrees colder. I agree with Tony on all of our many duplicates. I have a few more to add that I have tested in my garden that don't duplicate any of Tony's: Crinum rattrayii - a jagus form, in a protected location Crinum asiaticum - in a protected location Crinum x 'White Prince' - not sure if this is the same as what Tony listed as 'Great White Prince', but mine is not a powellii. Crinum x 'Super Ellen' Crinum x 'Peachblow' Crinum x 'Burgundy' These went into the garden this year so will get their first test this winter: Crinum album (syn. yemense) Crinum macowanii Crinum procerum (red leaf) Crinum scabrum - in a protected location Crinum x 'Summer Glow' Crinum x 'Sunbonnet' Crinum x 'Improved Peachblow' Crinum oliganthum x flaccidum Crinum x baconi - same ancestry as 'Southern Belle' and 'Maureen Spinks', but a different form. Regards, Jay Yourch Central North Carolina, USA (USDA Zone 7)