There is an agapanthus rated hardy in z 6 that is marketed by Arrowhead Alpines: http://www.arrowheadalpines.com/ac-am.htm John Ingram in Camarillo, CA, between Santa Barbara and L.A. http://www.floralarchitecture.com/ "Your Clivia Connection" New number >>> 805.914.9505 (cell, west coast time, please call accordingly. Thank you)