■(AB) 'Zebulon' 1941, Callis 'Zebulon' ( Ella Callis, R. 1941) TB. Very late bloom. Color Class B1M. 'Sir Knight' x 'Ormohr'. Also listed in TB web 'Zebulon'. NOT...
(AB) 'Zia' 1945, White 'Zia' OB (Clarence G. White, R. 1945). AB, IMB, medium height, Early bloom. Light blue red bitone. Also listed in IB web: 'Zia'. See below:...
■(AB) 'Zimbek' 1985, Gadd 'Zimbek' OGB (Fred Gadd, R. 1984). Seedling 6B 76A. AB, 28" (71 cm), Early bloom. Standards dark blue purple; Falls purple with black v...
■(AB) 'Zwanenburg' 1912, Denis 'Zwanenburg' OB (Fernand Denis). AB, IMB, medium height, Early bloom. Yellow toned blend, light. lutescens aurea X I. susiana. Deni...