■(SIB) 'Cabernet' 1982, Hager 'Cabernet' (Ben Hager, R. 1982) Seedling SB9ODkRd. SIB, 34" (86 cm), Midseason bloom. Dark wine red; small signal veined over wh...
■(SIB) 'Caesar' (originally 'Caezar') 1930, Morgan 'Caesar' (F. Cleveland Morgan, R. 1930) SIB. Color Class B7D. 'Nigrescens' x 'Blue King'. Name changed from 'Ca...
■(SIB) 'Caesar's Brother' 1932, Morgan 'Caesar's Brother' (F. Cleveland Morgan, 1932) SIB B. Honorable Mention 1936; Morgan Award 1953. Note: Name changed from '...
(SIB) 'Canton Blue' 1966, Nesmith 'Canton Blue' (Elizabeth Nesmith, deceased, by K. Vaughn, R. 1973). SIB, Height 24" (61 cm), Midseason to late bloom. Medium blu...
(SIB) 'Cape Dazzle' 1963, Kitton 'Cape Dazzle' (M. E. Kitton, R. 1963) SIB, 30" (76 cm), Late bloom. Yellow with violet reticulations. From two Sibirica subsectio...
■(SIB) 'Castlegrace' 1973/74, Nelson 'Castlegrace' ( Mrs. P. Nelson, R. 1972) SIB, 32" (81 cm), Midseason bloom. Deep violet blue self; light blue stylearms. Pare...
(SIB) 'Catherine Howard' 1992, Tubbs 'Catherine Howard' ( Mary Tubbs, R. 1992) Seedling H DK. SIB, 36" (91 cm). Midseason bloom. Medium dark blue, blue signal. Pa...
■(SIB) 'Charming Darlene' 1984, Miller 'Charming Darlene' ( Anna Mae Miller, R. 1984). Seedling 79.12.4. SIB, 38" (97 cm), Midseason to late bloom and rebloom. St...
■(SIB) 'Cheery Lyn' 1991, Miller 'Cheery Lyn' (Anna Mae Miller, R. 1990). Seedling 85 20 15. SIB, 37" (94 cm), Early bloom. Standards lilac (RHS 76C) with blue li...
(SIB) 'China Blue' Bef. 1938, Preston 'China Blue' ( Isabella Preston, before 1938). SIB. Color Class B1L. Siberica maxima x 'Snow Queen'. Main.RPries 2011...
■(SIB) 'China Spring' 1999, Bauer/Coble 'China Spring' ( Bob Bauer and John Coble, R. 1999). SIB, 40" (102 cm), Very early bloom. Standards light blue; style arms...
(SIB) 'Christopher' 1968, Hansford 'Christopher' ( Doris Hansford, R. 1968) SIB, 36" (91 cm), Late bloom. Red purple self. (Hybrid I. bulliana x I. chrysograph...
(SIB) 'Clear Creek Road' 1998, Wadekamper 'Clear Creek Road' ( Julius Wadekamper, R. 1999) Seedling SIB 88 6. SIB, 26" (66 cm), Early bloom. Deep purple; style ar...
■(SIB) 'Clear The Way' 2018, Schafer/Sacks 'Clear the Way' (Marty Schafer and Jan Sacks, R. 2018). Seedling S12 41 5. SIB, 35" (89 cm). Midseason to late bloom. S...
■(SIB) 'Clee Hills' 1983, Hewitt 'Clee Hills' ( Jennifer Hewitt, R. 1979) Seedling S 731. SIB, 40" (100 cm), Early to midseason bloom. Medium violet blue; viol...
■(SIB) 'Colorado Colonel' 1985, Varner 'Colorado Colonel' ( Steve Varner, R. 1984) Seedling V795. SIB, 32" (81 cm), Midseason late to very late bloom. Mid blue wi...
(SIB) 'Congo Drums' 1956, Marx 'Congo Drums' (Walter Marx, R. 1956). SIB, 36" (91 cm). Late bloom. Color Class RV1D, Very deep purple self. 'Caesar's Brother' X u...
(SIB) 'Cookley Blue' 1939, Christie Miller 'Cookley Blue' (C. W. Christie Miller, R. 1939) SIB. Color Class B1D. I. chrysographes x I. sibirica . Main.RPr...
■(SIB) 'Cool Spring' 1939, Kellogg 'Cool Spring' ( W. M. Kellogg, R. 1939) 37". Midseason bloom. Color Class B1L. Light blue self with white styles, yellow blaze...
(SIB) 'Copper Elf' 1967, Kitton 'Copper Elf' (M. E. Kitton, R. 1963) SIB, 24" (61 cm), Late bloom. Suffused copper on pale base, self. From two Sibirica hybrid se...
(SIB) 'Coquet Waters' 2001, McCarthy 'Coquet Waters' ( M. B. McCarthy by J. Hewitt, R. 1987) SIB (dip.), 41" (104 cm), Early to midseason bloom and rebloom. Stand...
(SIB) 'Coreana' 1886, Leichtlin 'Coreana' (Max Leichtlin, 1886, collected S. Manchuria). D Sib; B1M; Medium blue self; Dykes notes in The Gardeners' Chronicle, p....
(SIB) 'Coulour Of Rose' 1920, Cleveland 'Coulour Of Rose' (Frances Cleveland, R. 1920) According to Registration this was a Japanese Iris but 1939 checklist says ...
■(SIB) 'Count The Ways' 2016, Hollingworth 'Count The Ways' (Robert Hollingworth, R. 2016) Seedling 11Q3B1. SIB (tetraploid), 41" 44" (104 109 cm), Very early to ...
(SIB) 'Court White' 1967, Kitton 'Court White' (M. E. Kitton, R. 1964) SIB, 36" (91 cm), White self. From two Sibirica seedlings. Orpington 1967. Main.Laurie...
■(SIB) 'Cream Of the Crop' 2020, Aitken 'Cream Of the Crop' (J. Terry Aitken, R. 2019). Seedling 15 SIB 2B. SIB, 36" (91 cm), Midseason to very, very late ...
■(SIB) 'Cream Of Tomato' 2011, Schafer/Sacks 'Cream Of Tomato' (Marty Schafer and Jan Sacks, R. 2011) Seedling S03 32A 10. SIB, 23 (58 cm), Early bloom. Standards...
(SIB) 'Cristata' 1904, Vilmorin 'Cristata' (Vilmorin Andrieux et Cie, 1904) SIB Color Class B7. See below: * References References Awaiting original catalo...