Related Links............. Novelty Irises
"Giant size has had strong appeal to many iris enthusuasts. 'Spring Sunshine' from Milliken in 1947 started the trend and more recent irises have continued it. Schreiner's 'Giant Rose' attracted many fanciers; Babson's 'Djinn' and his 'Epic', the parent of the Dykes Medal winning 'Shipshape', have satisfied megalomania."--Ben Hager, The World of Irises 1978. We are attempting to develop a list below of Irises with this trait. Please add any that have been missed by commenting in the comment box.
'Djinn'; 'Epic'; 'Giant Rose'; 'Shipshape'; 'Spring Sunshine';
-- Main.RPries - 2010-11-03
Not sure what the lower size limit for "giant" is, and many modern cultivars are at least as large as the ones listed here. However, among "earlier" historics, in my experience, the following are consistently larger than 'Mussolini', and on par with 'Giant Rose':'Buechley Giant'( E. M. Buechley, R. 1932); 'National White' (National Iris Gardens, R. 1944); 'William A. Setchell' Brehm, R&I 1938 -- DavidFerguson - 2017-05-09