| Yacca | BB Dec Or. | Halv* | 1973 | RHS | |
| Yagoda | 302 | BB FD V Y/R. | Kon | 1968* | Y. striped R. |
| Yakei | 273i | B IC DB | Kon | 1958* | |
| Yakuda | 202 | B ID Y. | Kon | 2001 | ADS Dec '00/86.6 |
| Yakudah | 404 | M FD Pk. | Kon | ADS Dec '00/88.0 | |
| Yakudoh | O26 | AA ID R. | Aus | 1993 | RHS Sup 7/Vermillion R./10-10 1/2",4 1/2' |
| Yamabiko | 615 | WL Bi Or/W. | Dah | 1974 | Or. w large W. tips / 4x2 1/2" |
| Yama-no-yobigoe | 270 | B C(L) LB Y/Or. | Bll | 1995 | RHS Sup 7/Salmon Or. w Y. center/ 7",5' |
| Yamatoji | 112 | A FD Fl. | Wood* | 1976 | Autumn & R. bl. |
| Yamba | 549 | P Pr. | Unk | 1988 | Plum |
| Yankee | 445 | M SC DPk. | Unk | 1956 | Rhodamine Pk. w slight Golden undertone/3 1/2x2 1/2", 4'- 85.2 |
| Yankee Doodle | 513 | Ba DB Pr/R. | Unk | 1978* | |
| Yankee Gold | 122 | A ID Y. | Wod* | 1937 | Gold |
| Yankee Gold | 222 | B ID Y. | Seal | 1948* | Yukon 1948, Gold |
| Yankee King | 226 | B ID R. | Unk | 1943 | Edison 1944, Cornelian R, rev. lightly shaded Mallow Pr. |
| Yankee King | Dec R. | Inl | 1942* | Glr '30/ Flame Scarlet | |
| Yankee King | 211 | B FD Br,. | Smce | 1943* | Kunb 1946, Copper rose, shaded gold |
| Yankee King | 211 | B FD Br. | Unk | 1945* | Seal '37/ Copper Rose, shaded gold / 8" |
| Yankee Peddler | 326 | BB ID R. | Inl | 1994* | ADS Comp list |
| Yankee Queen | FD LB W/Pk. | Unk | 1935* | Breck '33, Ldg '35/ a true pink | |
| Yankee Royal | 129 | A ID Pr. | Inl | 1945* | Seal '37/ Royal Pr. w grey veins |
| Yarra Buttercup | 102 | A FD Y. | Inl | 1980 | |
| Yarra Falls | 128 | A ID L. | Unk | 1995* | Con '95/ 3 1/2'-probably YARROW FALLS |
| Yarra Falls | 115 | A FD Bi DkR/W. | Unk | 1958* | |
| Yarra Glen | 373 | BB C DB Y/R. | Pol | 1975* | |
| Yarra Wynn | 262 | B C Y. | Unk | 1985 | |
| Yarro Falls | 133 | A ID DB L/Pr. | Unk | 1996 | Garden Valley '97 |
| Yarrow Falls | 115 | A FD Bi | Plo | 1995 | Homestead '95 |
| Yasha | 310 | BB FD LB W/Pr. | Mir | 1999 | RHS SUP 11/140mm Greenish w. shading to one-third strong Pr.Towar tops |
| Yashinku | 307 | BB FD DkR. | Mae | 1963 | |
| Yashonkyoku | 273i | B IC DB W/Pr. | Unk | 1943 | W w Pr. |
| Yatana | 266 | B C R. | Unk | 1996 | Sup 8/Vivid R./7",2' |
| Yelitza | 364 | B C(L) Pk. | Unk | 1965* | Mir '65/ Salmony Pk. |
| Yell | 406 | M FD R. | Lam | 1974* | Or. R. |
| Yellow A. W. Tait | Dec Y. | Vad | 1910* | Pale Y. replica of A. W. TAIT | |
| Yellow Abundance | 302 | BB FD Y. | Drt | 1998* | Wgl ltr '99 |
| Yellow Amelisweerd | 242 | B SC Y. | Mae | 1976 | Y-Or. bl. |
| Yellow Baby | Y. | Unk | 1939* | Canary Y. | |
| Yellow Baby | 542 | P Y. | Unk | 1970* | Deep Y. /3 1/2' |
| Yellow Baby | SC Y. | Unk | 1960* | ||
| Yellow Bacchus | 342 | B SC Y. | Unk | 1990 | Y. sport of BACCHUS |
| Yellow Bachus | 242 | B SC Y. | Hky | 1961* | Y. sport of BACCHUS |
| Yellow Ball | 502 | Ba Y. | Wod* | 1958* | |
| Yellow Ballegos | B Dec | Dry | 1951* | NDS '51 | |
| Yellow Balloon | 502 | Ba Y. | Wai | 1928* | Blu 1987 |
| Yellow Basket | 302 | BB FD Y. | Unk | 1984 | 85.76,85.98 |
| Yellow Beauty | Dec Y. | Phs | 1930* | Glr '30/ Clear Sulphur Y. | |
| Yellow Beauty | 202 | B FD Y. | Whm | 1930* | Sulphur Y./ 7x4",6' |
| Yellow Beauty | Dec Y. | Unk | 1972* | ||
| Yellow Bedder | 302 | BB FD Y. | Unk | 1959* | |
| Yellow Belinda | 402 | M FD Y. | Unk | 2000 | RHS SUP 112/990mm/Brilliant Greenish Y.. |
| Yellow Bird | 702 | S Y. | Unk | 1977 | Dah '36/ Bright Lemon Y. |
| Yellow Bird | 662 | Col Y w Y. | Unk | 1936* | Deep Y. w pointed petals/4",4' |
| Yellow Bird | 402 | M FD Y. | Unk | 1968* | Pure sulphur Y./3 1/2x2 3/4",3' -LBD '63-85+(3),86+(3),87.333 |
| Yellow Boy | Y. | Unk | 1981* | Brt. Golden Y., Large | |
| Yellow Boy | Dec Y. | Unk | 1958* | ||
| Yellow Boy | 542 | P Y. | Unk | 1960* | |
| Yellow Brocade | Dec Y. | Bru | 1920 | ||
| Yellow Butterfly | 662 | Col Y w Y. | Unk | 1964 | Lees DG '35/ Deep Y. throughout /3' |
| Yellow Cefn Glow | 342 | BB SC Y. | Mae | 1983* | Clear Y. sport of CEFN GLOW |
| Yellow Century | 702 | S Y. | Wildm. | 1919* | |
| Yellow Cheer | 302 | BB FD Y. | Sao | 1958* | Primrose Y. Dwarf, Brt. Y. /4x2 1/2",1 1/2' |
| Yellow Chester | 342 | BB SC Y. | Unk | 1971* | |
| Yellow Chinese Lantern | 302 | BB FD Y. | Mes | 1935* | |
| Yellow Climax | 302 | BB FD Y. | Bru | 1956 | Pure Y. /4",4' |
| Yellow Climax | 502 | Ba Y. | Wom | 1843* | Wildm. Probably abbreviation for Originator's name |
| Yellow Climax | 522 | MB Y. | Unk | 1977* | |
| Yellow Cloud | 122 | A ID Y. | Unk | 1967 | |
| Yellow Cocorino | O42 | AA SC Y. | Ind | 1969* | |
| Yellow Collosal | 142 | A SC Y. | Drs | 1961* | |
| Yellow Colosse | Dec Y. | Tsd | 1917* | NCL 1917/ C/E/G | |
| Yellow Colosse | Dec Y. | Gil | 1965* | Primrose Y. | |
| Yellow Colour | 202 | B FD Y. | Too | 1998* | IDA '98 |
| Yellow Comet | 142 | A SC Y. | Far | 1966 | Edison 1944, Picric Y./ 11x7", 5' |
| Yellow Constance | C Y. | Jnn | 1936 | F. C. C. 1886 | |
| Yellow Corvette | 362i | BB IC Y. | Jos | 1940 | Lt. Chartreuse Y./ 4 1/4x2 3/4",3 1/2'-85.0(2),85.5(2) |
| Yellow Cowl | 150 | A SC LB Br/DPk. | Vdv | 1932 | Lt. bl. of Golden Buff & Begonia Rose |
| Yellow Cross | 742 | N Y. | Unk | 1974* | Primrose Y. Orchid shape w W. collar -86.0 |
| Yellow Crown | 262 | B C Y. | Hau | 1941 | 85.0 |
| Yellow Crown | 462 | B C Y. | Vav | 1964* | |
| Yellow Curly | C Y. | Wej | 1980 | RHS | |
| Yellow D No. 7 | A FD | Unk | 1945* | ||
| Yellow Dainty | 262 | B C Y. | Cox | 1885 | |
| Yellow Darling | 402 | M FD Y. | Mae | 1978* | |
| Yellow Dawn | SC Y. | Spe | 1951 | ||
| Yellow Defiance | 502 | Ba Y. | Unk | 1840 | Florist's Guide,sold in London in 1839 at $60.00/root (£15 Sterling) |
| Yellow Defiance | 502 | Ba Y. | Vlu | 1840* | |
| Yellow Delight | 342 | BB SC Y. | Blm | 1961 | Creamy Y./ 6x4 1/2",4', IR says B |
| Yellow Delight | 342 | BB SC Y. | Tak | 1962 | |
| Yellow Desert | 302 | BB FD Y. | Unk | 1995 | RHS SUP 9/140mm/Greenish Y. |
| Yellow Disneyland | 110 | M FD LB Y/Or. | Unk | 1967 | |
| Yellow Dixie | 742 | N Y. | Sto | 1984* | |
| Yellow Dog | 302 | BB FD Y. | Sto | 1981* | Primrose Y./4 1/2x4",3'-85.133 |
| Yellow Dragon | 162i | A IC Y. | Unk | 1969* | Primrose Y. /3' |
| Yellow Dream | 302 | BB FD Y. | Bao | 1968* | Lt. Primrose Y., Brt. Deep Y./4x3",4'- 85.0 |
| Yellow Dream | 302 | BB FD Y. | Ain | 1969* | |
| Yellow Duchess | 102 | A FD Y. | Glg | 1958* | Sulphur Y. /9x5" |
| Yellow Duke | 502 | Ba Y. | Unk | 1917 | |
| Yellow Eclipse | 262 | B C Y. | Sto | 1967 | |
| Yellow Elegance | 322 | BB ID Y. | Vao | 1965 | Charming Y.!/5' |
| Yellow Emperor | 242 | B SC Y. | Cmb | 1969* | Creamy Y. /78",4' |
| Yellow Fandango | 702 | S Y. | Unk | 1980* | Reported from San Leandro |
| Yellow Fantasy | 462 | B C Y. | Bur | 1960* | |
| Yellow Favourite | Dec Y. | Swi | 1967* | ||
| Yellow Fellow | 102 | A FD Y. | Rca | 1951* | Canary Y. |
| Yellow Fellow | 242 | B SC Y. | Aar | 1997 | COD '97 says raiser NRD but doesn't identify |
| Yellow Fever | 302 | BB FD Y. | Hoe | 1981* | Mimosa Y./ 6x4 1/2",3 1/2'- 85.0 |
| Yellow Finch | 262 | B C Y. | Lew | 1938* | Brt. sunshine Y. /7",5' |
| Yellow Fire | 512 | Ba Fl | Con | 1966 | RHS, Y. w R. center |
| Yellow Flame | C Y. | Ash | 1968* | ||
| Yellow Flower | Dec Y. | Hbb | 1960 | ||
| Yellow Frank Hornsey | 302 | BB FD Y. | Mcw | 1957* | |
| Yellow Frills | 342 | BB SC(L) Y. | Unk | 1959* | 4'- 85.125RHS SUP 10/140mm |
| Yellow Galator | 262i | B IC Y. | Mcw | 1971 | Brt. Y. /7",4 1/2' |
| Yellow Gem | 542 | P Y. | Unk | 1880 | Brt. Canary Y./2",5' |
| Yellow Gem | 542 | P Y. | Kri | 1958* | F. C. C. 1882 |
| Yellow Gem | 522 | MB Y. | Unk | 1963* | H. C. (g) 1933 |
| Yellow Gem | C Y. | Bao | 1915 | ||
| Yellow Giant | 262i | B IC Y. | Ree | 1944* | ADS 1944 |
| Yellow Giant | O42 | AA SC Y. | Hin | 1914 | |
| Yellow Giant | Dec Y. | Unk | 1932 | ||
| Yellow Giraffe | 742 | O Y. | Dah | 1998* | Wgl ltr '99 |
| Yellow Girl | 362 | BB C Y. | Cke | 1968* | |
| Yellow Glamour | OO2 | AA FD Y. | Fre | 1978* | 12" |
| Yellow Globe | 502 | Ba Y. | Unk | 1938* | S. C. C. 1975 |
| Yellow Glory | 162 | A C Y. | Unk | 1934 | |
| Yellow Glory | 122 | A ID Y. | Dry | 1875 | |
| Yellow Glory | 142 | A SC Y. | Unk | 1980* | |
| Yellow Glow | 242 | B SC Y. | Unk | 1978* | Deep Y. |
| Yellow Hammer | C Y. | Gge | 1936* | ADS Bul. Sep. '15 | |
| Yellow Hammer | 402 | M FD Y. | Unk | 1947 | Deep Y. w Brown foliage /2' |
| Yellow Hammer | 702 | S Y. | Lew | 1968 | |
| Yellow Happiness | 442 | M SC Y. | Unk | 1993 | Swk '98 |
| Yellow Harlequin | 234 | B ID V Y/R. | Rdd | 1996 | Mcr '98/8 x 5",5'/Canary and blood R./85.0,89.3 |
| Yellow Heart | 262 | B C Y. | Prt* | 1957 | Sport of GOLDEN HEART |
| Yellow Hornsey | 202 | BB FD Y. | Vab | 1990 | A Hornsey Sport |
| Yellow Hyme | O34 | AA ID V Y/R. | Unk | 1987* | Kor 1982, Deep Y. splashed R. |
| Yellow Ideal | A SC | Unk | 1982 | ||
| Yellow Impact | 242 | B SC Y. | Nor | 1991* | DOT '95/ Sport of GOLDEN IMPACT/7",5' |
| Yellow Imperator | Dec Y. | Unk | 1969* | ||
| Yellow Jacket | 262i | B IC Y. | Lud | 1960* | 85.67 |
| Yellow Jacket | 162 | A C Y. | Unk | 1951* | The Dahlia 1950/ 10 x 6" |
| Yellow Jacket | 134 | A ID V Y/R. | Duo | 1960* | |
| Yellow Jacket | 542 | P Y. | Win | 1938* | |
| Yellow Jean Kerr | 502 | Ba Y. | Unk | 1960 | Hcg 1948, FD or Ball like JEAN KERR |
| Yellow Jewel | 522 | MB Y. | Unk | 1970* | |
| Yellow Joy | Dec Y. | Hvd | 1973 | ||
| Yellow Jubilee | 542 | P Y. | Hvd | 1968* | Pure Cream Y./4' |
| Yellow Keene | 142 | A SC Y. | Chu | 1992* | Rich Golden Y. |
| Yellow King | 362 | BB SC Y. | Unk | 1949* | Credited to "True", shown at Cincinnati |
| Yellow King | 635 | Pe Bi Y/W. | Unk | 1958* | Y. tipped W. |
| Yellow King | SC Y. | Ryn | 1919* | ||
| Yellow Kitten | 402 | M FD Y. | Prt* | 1971* | Y. touched w Lt. Pk. |
| Yellow Kotara | 542 | P Y. | Aus | 1914 | Pure Y./ 1 3/4x1 1/2",4' |
| Yellow Lantern | 302 | BB FD Y. | Unk | 1943 | A Y. color mutation of CHINESE LANTERN/ 5 1/2",4' |
| Yellow Lass | 222 | B ID Y. | Ede | 1963* | Lt. Primrose Y. /7 1/2x4",5' - 85.0,85.1 |
| Yellow Linda's Chester | 342 | BB SC Y. | Petr | 1969* | DOT '96/ Bright Y. |
| Yellow Llewellyn | 142 | A SC Y. | Kro | 1951* | Bao 1956, Buttercup Y./ 9" |
| Yellow Magic | 522 | MB Y. | Mur | 1989 | |
| Yellow Majorette | 362 | BB C Y. | Mih | 1988 | IDR Sup 4,Brilliant Y., glowing vivid Y./ 4 3/4",3 1/2' |
| Yellow Marvel | 215 | B FD Bi Y/W. | Blo | 1945 | Deep golden Y. tipped W. |
| Yellow Marvel | SC Y. | Unk | 1969* | ||
| Yellow Masterpiece | O22 | AA ID Y. | Unk | 1967 | Empire Y. sport of MURPHY'S MASTERPIECE /11x7" |
| Yellow Meredith | 302 | BB FD Y. | Ind | 1983 | 86.0 |
| Yellow Miss | 342 | BB SC Y. | Ind | 1943* | Dix 1943 |
| Yellow Miss Belgium | 262 | B C Y. | Cke | 1957* | Syn K. L. M. |
| Yellow Mist | 302 | BB FD Y. | Jnn | 1961* | |
| Yellow Monarch | O22 | AA FD Y. | Con | 1998* | IDA '98/ Sport of CROYDON MONARCH |
| Yellow Monarch Sport | O14 | AA FD V Y/R. | Lak | 1998* | IDA '98/ Y. with R. stripes sport of YELLOW MONARCH |
| Yellow Mood | 442 | M SC Y. | Cru | 1938* | Sport of HAPPY MOOD /H. C. (g) 1965 |
| Yellow Moon | 242 | B SC Y. | Unk | 1955 | 85.0 |
| Yellow Moon | 222 | BB ID Y. | Eng | 1991 | 85.0 |
| Yellow Mum | 162i | A IC Y. | Bar | 1953* | Lt. Y. |
| Yellow Orchid | 742 | O Y. | Tur | 1984 | RHS, Sulphur Y. |
| Yellow Osark | 362i | BB IC Y. | Sn40 | 1977* | |
| Yellow Pastelle | 242 | B SC Y. | Nuy | 2000* | DOT '00/Brt. Y. Spt of SUNLIHT PASTELLE |
| Yellow Pearl | 262' | B C Y. | Unk | 1962 | Y Bl.s |
| Yellow Perfection | 702 | Ba Y. | Baw | 1961 | F. C. C. 1867 |
| Yellow Perfection | 502 | Ba Y. | Unk | 1840* | Florist's Guide, extra fine dark Y./4-5' |
| Yellow Perfection | SC Y. | Unk | 1979* | ||
| Yellow Peril | O22 | AA ID Y | Unk | 1960 | Deep Y. /11" |
| Yellow Pet | 302 | BB FD Y. | Hrr | 1867* | |
| Yellow Petite Glossy | 542 | P Y. | Olm | 1996* | Emerald Valley '97 |
| Yellow Pirate | 142 | A SC Y. | Unk | 1966* | |
| Yellow Plume | B Dec | Bec | 1951* | NDS '51 | |
| Yellow Poppett | 522 | MB Y. | Bek | 1953 | |
| Yellow Poppy | 542 | P Y. | Sto | 1969* | |
| Yellow Preludium | 442 | B SC Y. | Unk | 1956 | Sport of PRELUDIUM , 8x6",5' |
| Yellow Pride | 342 | BB SC Y. | Unk | 1970 | ADS Bul Sep '00/LBD '72.Ave 85.55 |
| Yellow Pride | 342 | BB SC Y. | Eng | 1938* | Lt. Primrose Y. /5x3",4'-LBD '72- 85.34,85.44,85.5,85.67,87.5 |
| Yellow Prim | 702 | S Y. | Unk | 1967 | Clear Primrose Y. /4 1/2",4' - 85.0(2),85.5(2) |
| Yellow Prince | 662 | Col Y w Y. | Dry | 1973 | A. M. 1916 |
| Yellow Prince | 522 | MB Y. | VavJr | 1951* | Spe 1959 |
| Yellow Prince | 162 | A C Y. | Aar | 1975 | |
| Yellow Princess | 262i | B IC Y. | Glr | 1916 | Brt. Y. /4' |
| Yellow Princess | 162 | A C Y. | Mae | 1942 | |
| Yellow Princess | SC Y. | Unk | 1969* | ||
| Yellow Prize | SC Y. | Dry | 1978 | RHS, Bril greenish Y. | |
| Yellow Profusion | 242 | B SC Y. | Unk | 1957* | Dark Primrose, deeper of tone in center /6 1/2x3 1/2",4' |
| Yellow Prolific | 302 | BB FD Y. | Cea | 1944* | Sport of QUEEN CITY, /6x4", Flowers about 45 days after planting |
| Yellow Queen | 622 | Pe Y. | Dry | 1971* | A. M. (g) 1926 |
| Yellow Queen | 662 | Col Y w Y. | Bru | 1959* | A. M. 1916 |
| Yellow Queen | 522 | MB Y. | Knt | 1947 | Brt. Y./3",3' |
| Yellow Queen | Dec Y. | Lam | 1916 | ||
| Yellow Rays | 162 | A C Y. | Unk | 1925 | Pure Y. / 9x6 1/2",4 1/2' |
| Yellow Record | C Y. | Unk | 1967 | RHS, vivid greenish Y. | |
| Yellow Red Tip | 552 | P Fl. | Unk | 1947 | Knt 1947 |
| Yellow Ribbon | SC Y. | Aar | 1938* | ||
| Yellow River | BB Dec Y. | Hol | 1970 | ||
| Yellow Satan | 142 | A SC Y. | Hoe | 1951* | Ldg '36/ Y. w Slight blush of Mallow Pk., credited to "Lozo"? |
| Yellow Satan | 402 | M FD Y. | Unk | 1968 | |
| Yellow Shine | SC Y. | Unk | 1967 | ||
| Yellow Show | 202 | B FD Y. | Unk | 1942* | Brt. Y. cut flower /6",3' |
| Yellow Show | 202 | B FD Y. | Hoe | 1998* | Winchester Gardens Ltd. |
| Yellow Sneezy | 722 | MS Y. | Unk | 1999* | Frenkys'99 |
| Yellow Sneezy | 522 | MS Y. | Vab | 1998* | Wgl ltr '99 |
| Yellow Snow | BB Dec Y. | Unk | 1967 | H. C. (g) 1955, Probably YELLOW SHOW | |
| Yellow Sparks | 342 | BB SC Y. | Cke | 1954 | |
| Yellow Special | 362 | BB C Y. | Dry | 1954 | H. C. (g) 1947,Rich Y. 6",3', Bru says he reported it wrongly to IR |
| Yellow Spider | 262i | B IC Y. | Unk | 1947* | Sulphur Y., almost chartreuse/ 3 1/2' |
| Yellow Spider | 355 | B SC Bi Y/W. | Sto | 1963* | |
| Yellow Spiky | 342 | B SC Y. | Unk | 1960* | Sport of SPIKY SYMBOL |
| Yellow Spiral | 142 | A SC Y. | Unk | 1969* | Clear Brt. Y. /9",6 1/2' |
| Yellow Splator | 262 | B C Y. | Unk | 1967 | Probably YELLOW GALATOR |
| Yellow Splendor | 230 | B ID LB Y/L. | Unk | 1973* | 8x4 1/2",4 1/2'- 85.0,85.83 |
| Yellow Splendor | 242 | B SC Y. | Dry | 1949* | Y. /8x5",4' |
| Yellow Splendour | 342 | BB SC Y. | Rob | 1969* | |
| Yellow Standard | Y. | Dry | 1945* | ADS Golden Anniversary Record | |
| Yellow Standard | Y. | Unk | 1968* | F. C. C. 1870 | |
| Yellow Star | 642 | An Y. | Smo | 1870* | A. M. 1915, Originally called Star dahlias between ±1915-1925 |
| Yellow Star | 242 | A SC Y. | Cea | 1975* | Dresden Y. |
| Yellow Star | 362i | B IC Y. | Glg | 1963* | H. C.(g) 1956, Brt. Y. /5' |
| Yellow Star | Dec Y. | Dek | 1913 | Jahrbuch 1990/1991 | |
| Yellow Star | 702 | S Y. | Unk | 1913* | Primrose Y. |
| Yellow Star | 162 | A C Y. | Scw | 1961* | |
| Yellow Submarine | 402 | M FD Y. | Vav | 2001 | ADS Dev '00/3 3/4 x 2 3/4"/85.33 |
| Yellow Success | 342 | BB SC Y. | Haw | 1989 | IDR Sup 5/6",5' |
| Yellow Success | SC Y. | Rob | 1915 | ||
| Yellow Sun | 662 | Col Y w y. | *** | 1996* | So. Coast '97 |
| Yellow Sun | Dec Y. | Bru | 1969* | ||
| Yellow Sunrise | 242 | B SC Y. | Unk | 1977 | Primrose Y. /7 1/2x5",4'-85.0(2) |
| Yellow Supreme | C Y. | Unk | 1958* | *** IR says Duijn, but doesn't say if that is a code or full name | |
| Yellow Supreme | 142 | A SC Y. | Koe | 1979 | |
| Yellow Surprise | 242 | B SC Y. | Unk | 1968 | Deep sulphur Y., Porcelain Y. /6 1/2x4 1/2",4' |
| Yellow Surprise | 362 | BB C Y. | Hlh | 1949* | |
| Yellow Sylvia | 402 | M FD Y. | Sto | 1947* | Strontian Y., Seedling of SYLVIA |
| Yellow Symbol | 242 | B SC Y. | Hvd | 1972* | Second symbol Sport by Same name but different dates. |
| Yellow Symbol | 242 | B SC Y. | Unk | 1958* | Sport of SYMBOL |
| Yellow Terpo | 242 | B SC Y. | Nzo | 1933 | Brt. Y. sport of TERPO /7",4'- H. C. (g) 1963 |
| Yellow Tide | 102 | A FD Y. | Mih | 1964 | 9 1/4x5 1/2",4 1/2'- 85.1 |
| Yellow Top | 722 | MS Y. | Vsn | 1976* | |
| Yellow Transparent | 622 | Pe Y. | Unk | 1910 | Lt. Y. Dup. |
| Yellow Tsuki | 162 | A C(L) Y. | Bin | 1977 | |
| Yellow Twist | 222 | BB ID Y. | Knt | 1962 | |
| Yellow Verstegen | SC Y. | Vdg | 1969 | ||
| Yellow Waterlily | 602 | WL Y. | Unk | 1960* | Dan 1960 |
| Yellow Whimple | 402 | M FD Y. | Unk | 1978* | |
| Yellow White-tip | 135 | A ID Bi Y/W. | Unk | 1944 | Some solid color blooms |
| Yellow Wonder | SC Y. | Wls | 1958* | Milbee '35/ Empire Y. | |
| Yelloway | 142 | A SC Y. | Aus | 1977 | |
| Yellowene | 302 | BB FD Y. | Unk | 1969* | |
| Yellowest in the World *** | 202 | B FD Y. | Jos | 1955* | Tod 1968, Yellowest-in-the-World |
| Yellowhammer | 542 | P Y. | Shaj | 1935* | A. M. (g) 1938 |
| Yellowin | 242 | B SC Y. | Sha | 1960 | Brt. Y. w lighter Rev./8x4",4' |
| Yellowstone | 242 | B SC Y. | Shm | 1952 | 85.0(2) |
| Yellowstone | 222 | B FD Y. | Shm | 1910* | Glr '30/ clear Y./ 4-8" |
| Yelno Blaze | 410 | M FD LB Y/Or. | Eng | 1995 | RHS Sup 7/Or, and Y. Blends/2 1/4",3' |
| Yelno Enchantment | 230 | BB ID LB Y/DPk. | Shm | 1989 | Lilac Pk. & Y. |
| Yelno Firelight | 614 | WL V Y/R. | Shm | 1980* | Brt. gold splashed w Scarlet |
| Yelno Harmony | 604 | WL Pk. | Unk | 1982 | Rich apricot |
| Yelno Misty Light | 601 | WL W. | Shm | 1982* | Probably Mrs. Sharp |
| Yelno Moonbeam | 602 | WL Y. | Shm | 1980 | Primrose Y. /4' |
| Yelno Petite Glory | 602 | WL Y. | Shm | 1987 | 4' |
| Yelno Royal | 609 | WL Pr. | Eng | 1956* | NDS '89 |
| Yelno Topaz | 608 | WL L. | Unk | 1886* | |
| Yelno Treasure | 604 | WL Pk. | Aro | 1961 | Soft Biscuit Apricot deepening to brownish Or./ 5' |
| Yelno Velena | 607 | WL DkR. | Unk | 1982 | |
| Yelno Velvina | 607 | WL DkR. | Bru | 1983* | Deep Wine coloured |
| Yelow Magic | 522 | MB Y. | Tak | 1984 | |
| Yemassee | 507 | Ba DkR. | Mtn | 1930* | Florist's Guide, Crimson Maroon, always perfect/4-5' |
| Yenako | 115 | A FD Bi DkR/W. | Unk | 1994 | At Bay Cities Show '96 |
| Yes Sir! | 205 | B FD DPk. | Gon | 1969* | Rure Rich Phlox Pk. /8x6",3 1/2' |
| Yesteryear | 369i | BB IC Pr. | Unk | 1987* | 86.5 |
| Ygdrasil | 444 | B SC Pk. | Bok | 1956* | Mtn 1971, Soft Salmon Pk./ 3 1/2' |
| Yhinko | 126 | A ID R | Tak | 1996* | At Bay cities '96 - a few petals bi-colored |
| Yiayia Sophie | 313 | BB FD DB W/Pr. | Ang | 1968* | |
| Yikiomoocow | B FD | Ive | 1980* | The D. S. of So. Aus., bulletin 1981 . | |
| Yma Sumac | 262 | B C Y. | Btn | 1976* | AM '77 - Nearest to Green Y. 1A /7",4 3/4' |
| Yo Ho (Yo-Ho) | 445 | B SC DPk. | Sur | 1984* | 85.25 |
| Yo Yo | 511 | Ba Br. | Tok | 1954* | Dahlianews 1938, Gold w Rich golden Br. suffusions/4 x 2 1/2", 3' |
| Yo Yo | 513 | Ba DB | Unk | 1937 | |
| Yoger | 370 | BB C LB Or/DPk. | Unk | 1969 | H. C. (g) 1935 |
| Yogi | 210 | B FD LB Y/L. | Jpo | 1938 | H. C. (g) 1962 |
| Yohmeimon | 172 | A C Fl. | Stm | 1935 | Dazzling Scarlet R. w Y. at the Base /10x7" |
| Yohmimon | A | Unk | 1971 | ||
| Yohro | 122 | A ID W. | Unk | 1962* | Creamy W. |
| Yoko | 262 | B IC Y. | Unk | 1957* | Butter Y. |
| Yolanda | Dec W. | Lun | 1968 | ||
| Yolanta | 706 | S R. | Lun | 1967* | |
| Yonaka | C DkR. | Unk | 1910* | Deep Maroon | |
| Yonna Lundgren | 350 | B SC LB W/Pr. | Bao | 1958* | Reddish Magenta tips to Whitish center/7",4'-Probably YONNE |
| Yonne | 253 | B SC DB | Gts | 1967 | Magenta tips, W, center w L. nuances /4',changed from YONNE PYLE |
| Yonne B. | 250 | B SC DB W/Pr. | Unk | 1969* | W. overlaid Tyrian Pr. w Silvery Rev./7 x 3 1/2"- VONNE B.? |
| Yonne Cayeux | C | Lokd | 1920 | ||
| Yonne Lundgren | SC Bi Pr/R. | Unk | 1974 | RHS, Pr. & R. bicolor -Quite likely Lun's YONNE (YONNE PYLE) OF 1963 | |
| Yori Kobi | 615 | WL Bi R/W. | Unk | 1998* | Swi '99/ |
| York | 133 | A ID DB Y/Pr. | Eng | 1935* | Milbee '35/ cream w Pr. tips |
| York and Lancaster | Dec Bi R/W. | Cdo | 1915* | Milbee '35/ Crimson, heavy W. tips | |
| York and Lancaster | 234 | B ID V R/W. | Hol | 1999 | RHS SUP 11/Plant originally discovered in chateau garden Lyons france |
| Yorkie | 241 | B SC W. | Cdo | 1991* | Considerably greyed |
| Yorkshire Hero | 505 | Ba DPk. | Cdo | 1840* | Florist's Guide, splendid ruby rose/4-5' |
| Yorky | 261 | B C W. | Jpo | 1986 | Nat. Col '99 |
| Yoro Kobe | M W. | Ref | 1996* | Swi '97/3,2 1/2' semi-dwarf | |
| Yoro Kobi | 315 | M FD Bi R/W. | Bll | 1985* | Swi '01.3"/ Swi calls WL |
| Yorokobi | 415 | M FD Bi R/W. | Jpo | 1847* | 3' |
| Yoruni Hikari | 669 | Col Pr w W. | Rit | 1959* | |
| Yosemite | 445 | B SC DPk. | Frc | 1893* | Amaranth Pk./8x4",5' |
| Yosemite | 324 | BB ID Pk. | Baw | 1970 | Shades of Apricot |
| Yoto | O3O | AA ID LB Y/Pk. | Eng | 1945* | Amber Y. w shadings of Pk., 12" |
| You Bet | 250 | B SC LB Y/Br. | Bok | 1958 | Or. Buff w Primrose Y. center, slightly (L) |
| You You (You-You) | 270 | B C LB Y/Or. | Borw | 1952 | |
| Young Bees | B Dec DPk. | Mod | 1963 | Probably YOUNG BESS | |
| Young Bess | 205 | B FD DPk. | Ril | 1974 | |
| Young Ian | 301 | BB FD W. | Bru | 1980* | |
| Young Love | 373 | BB C DB Y/DkR. | Yon | 1993 | Sup 8/Pale Y. w strong Purplish R. tips and Picotee/4",3' |
| Young Miss | 648 | An L. | Yon | 1955 | |
| Young Pippa | B Dec LB Y/Or. | Bru | 1973 | RHS | |
| Young Prince | 303 | BB FD Or. | Bru | 1953 | Lt. Or./ 6x4",4 |
| Young's Crimson | Pe | Nun | 1893 | ||
| Young's Fimbriata | Pe | Lam | 1913 | ||
| Your Favourite | 155 | A SC Bi DkR/W. | Unk | 1958* | Lt. Brownish R. tipped W./9x5 1/2",4' |
| Your Health! | 146 | A SC R. | Bru | 1976 | Brilliant R./ 10x6 1/2",4 1/2' |
| Your Lucky Star | 150 | A SC LB W/Pk. | Par | 1967 | Rrv credits to 'Wallace", Amaranth Pk. w W. center |
| Your Style | C LB L/DPk. | Sip | 1970 | RHS, Mod. Purplish Pk., center paler | |
| Youri Gagarine | 267 | B C DkR. | Jpo | 1972 | Probably named for the Russian Astronaut |
| Youth | 315 | BB FD Bi R/W. | Kam | 1946 | Mdf 1946,6x3",4 1/2',Deep carmine, more or less tipped and striped W |
| Youth | 244 | B SC Pk. | Unk | 1939 | Pure Lt. Pk./ 3 1/2' |
| Youth Fire | 252 | BB SC Fl. | Cur | 1960 | |
| Yowa Matsuoka | 167i | A IC DkR. | Unk | 1962 | Oxblood R. /9x4" |
| Yowu Matsuoka | 146 | A SC R. | Bgr | 1946* | Rrv 1946, Blood R. |
| Yrrah | 506 | Ba R. | Brm | 1985 | RHS |
| Y's By | 310 | BB FD LB Y/R. | Boer | 1981* | Y.base tipped Poppy R., shell Pk./4 1/2x4",3 1/2'- 85.25 |
| Yselmeer | 248 | B SC L. | Unk | 1936* | 4 1/2' Correct Spelling is IJSELMEER |
| Ysis | Unk | 1940* | |||
| Ysleta | Dec Br. | Jpo | 1904 | Salmon & copper | |
| Ysselmuiden | 242 | B SC Y. | Kon | 1963 | |
| Yuban | 514 | BA V Br/R. | Kon | 1938* | Dahlianews 1938, Tan overlaid and dotted R./ 4 x 2 1/2", 3' |
| Yucatan | 670 | Col LB W/Pk w W/Pk. | Jpo | 1938* | |
| Yui Ga Hama | O11 | AA FD BR. | Unk | 1993* | Czo list |
| Yuinoh | 135 | A ID Bi R/W. | Kon | 1977 | |
| Yukebare | O11 | AA FD W. | Unk | 1990 | Bedford lists in 1993. Sounds like Kon's of 1957* |
| Yuki Jooh | 421 | B ID W. | Unk | 1977* | Pure W. |
| Yuki no Ukihasi | 173 | A C(L) DB Y/Pr. | Jpo | 1961* | |
| Yukibare | 121 | A ID W. | Unk | 1958* | |
| Yukidaruma | O21 | AA ID W. | Swi | 1987 | edford 1993/ 10 x 9",5' |
| Yukiguni Dayori | 241 | B C W. | Jpo | 1987 | TLC |
| Yukikemuri | 141 | A SC W. | Unk | 1969* | Pure W. /4 1/2' |
| Yukino | 361 | BB C W. | Unk | 1991 | 4",4' |
| Yukino | 661 | Col W. | Unk | 1903 | Swi 1993, 4",4' |
| Yukinossa | 121 | A ID W. | Aus | 1986 | |
| Yukon | BB Dec LB Y/Or. | Jpo | 1970* | ||
| Yulan | 662 | Col Y w Y. | Jpo | 1968* | |
| Yule | 712 | S Fl. | Unk | 1980 | Y/R. 4' |
| Yuletide | 113 | M FD DB Y/R. | Kon | 1971* | Jasper R. w Y. at base/4x2 1/2",3 1/2' |
| Yume Kujaku (Yume-Kujaku) | 170i | A IC(L) LB W/L. | Unk | 1967* | Sdlg of TSUKI-YORI-NO-SHISHA |
| Yume no Hana | 353 | BB SC(L) DB Y/R. | Fox | 1969* | Gold w Scarlet tips/5' |
| Yume Suiren | 210 | B FD LB | Waz | 1991* | Probably same as Kon's of same name |
| Yume-Suiren | 610 | WL LB Y/Pk. | Lam | 1992* | Mauve Pk. on Y. /5-7",3 1/2' |
| Yumkyer | 201 | B FD W. | Unk | 1981* | |
| Yummie | 242 | B SC Y. | Unk | 1965* | |
| Yumueta | B Dec DPk. | Jpo | 1986 | RHS Sup 7/Mauve Pink/6 1/4"/4 1/4'" | |
| Yum-Yum | Dec Or. | Unk | 1973 | RHS, vivid reddish Or. | |
| Yunioh | 135 | A ID Bi DkR/W. | Tok | 1995 | ADS '95 |
| Yusawa Shibora | 154 | A SC V | Unk | 1963* | Dahliascope 1963 |
| Yushoh | O42 | AA SC Y. | Unk | 1975* | |
| Yuubi | 273 | B C DB Y/R. | Kon | 1974* | Y. w R. tips |
| Yuuku (Yuukyu) | 121 | A ID W. | Unk | 1970* | |
| Yuunen | 109 | A FD Pr. | Jpo | 1969* | |
| Yuuyoh | O28 | AA FD L. | Jpo | 1992* | Bedford 1993. Tyrian Pk./ 12 x 7",4' |
| Yuuzora | 250 | B SC LB Y/R. | Jpo | 1992 | RHS Sup 7/Y. w Magenta shading/10 1/4",3' |
| Yuyo | 123 | A ID Or. | Frc | 1980 | |
| Yuzawa Dentelle | 171 | A C(L) Br. | Glg | 1970* | Cinnamon Br. /10",4 1/2' |
| Yuzawa Shibori | 174 | A C V Or/R. | Unk | 1963* | |
| Yuzawa Shibura | 254 | B SC(L) V Pk/R. | Lao | 1974* | Salmon w Stripes & splashes of R. /8",4' |
| Yvan de Coutère | C | Unk | 1965* | ||
| Yveline Dumont | 166 | A C R. | Als | 1984 | RHS |
| Yvette | 530 | MB LB W/L. | Pes | ]970* | W. base overlaid w Violet Pr. to Royal Pr./5x3",4',F.C.C.(Dutch)1967 |
| Yvette Lanson | 524 | MB Pk. | Mes | 1969* | |
| Yvon | 529 | MB Pr. | Aus | 1968* | |
| Yvonne | 506 | Ba R. | Vao | 1964* | Blood R. |
| Yvonne | 469 | M C Pr. | Frc | 1974* | Fitzpatrick 1974, Deep Cyclamen |
| Yvonne | 604 | WL Pk. | Glg | 1982 | Salmon Pk. |
| Yvonne | Dec DkR. | Glg | 1958* | ||
| Yvonne | Dec W. | Unk | 1956 | ||
| Yvonne | SC DPk. | Com | 1951 | ||
| Yvonne Chaverot | 155 | A SC Bi | Eng | 1940* | The Dahlia 1939 |
| Yvonne Desportes | 261I | B IC W. | Lym | 1958* | W. w Slight hue of L. /4' |
| Yvonne Farrar | 222 | B ID Y. | Cob | 1928 | Primrose Y. /7x6",5 1/2'- 85.0,85.2,85.8 |
| Yvonne Geerlings | BB Dec Pk. | Aus | 1973 | RHS, Salmon Pk. - HC '85 | |
| Yvonne Marie | O5O | AA SC LB | Mcr | 1976* | |
| Yvonne Renardi de *** | C LB Y/Pk. | Unk | 1965 | *** Lavalette | |
| Yvonne Salmon | 626 | Pe R. | Gei | 1958 | Salmon R., H. C. (g) 1929 |