Peggy, According to the Sunset National Garden Book, none of them are hardy in areas that cold. Does anyone have any other information? Sue L. zone 4a MN -----Original Message----- From: Peggy Cunningham <Cunnime@MAIL01.DNR.STATE.WI.US> >Does anyone know of a source for kalmia latifolia that will be hardy for >zone 3 or 4? > >Zone 4 >Peggy > >