[From Climbing Roses, by Stephen Scanniello, p. 8:] Simply climbing version of bush forms… usually bloom on the previous year's growth… but because their canes often dieback in freezing weather, they have limited use for decorative purpose in regions with cold winters… Varieties that are hardy in the North: 'Climbing Queen Elizabeth', 'Climbing Iceberg', 'Climbing Yesterday', 'Climbing Peace'.
[From In Praise of Roses, by Harry Wheatcroft, p. 17: a climbing sport is] derived from a mutation of a normal bush variety and therefore tends to bloom only at the top of the plant, as its forebears did.