O. L. Weeks HT, dark red, 40 petals, 2006 +
Oakington Ruby Min, medium red, double, 1933 6.4
Octavia Hill F, medium pink, 75 petals, 1993 %
Octoberfest Gr, orange blend, double, 1998 7.5
Odessa Min, mauve, full, 1998 7.9
Oklahoma HT, dark red, 48 petals, 1964 6.9
Oklahoma, Cl. Cl HT, dark red, 1968 5.9
Oksana HT, pink blend, full, 2001 7.3
Old Baylor S, white, semi-double, 2005 +
**Old Blush Ch, medium pink, semi-double, 1751 8.7
Old Blush, Cl Cl Ch, medium pink 8.2
Old Country Charm Min, pink blend, full, 1996 7.8
#Old Glory Min, medium red, 23-25 petals, 1988 7.9
Old Master F, red blend, 15 petals, 1975 7.7
Old Port F, mauve, full, 1990 7.9
Old Red Moss M, medium red, very double 9.1
Old Smoothie HT, medium red, very double, 1970 6.4
Oldtimer HT, orange blend, double, 1969 6.0
Olé Gr, orange red, 50 petals, 1964 7.1
@Olympiad HT, medium red, 30-35 petals, 1983 8.6
Olympic Gold Min, light yellow, 31 petals, 1983 7.7
Olympic Palace F, orange blend, 25-30 petals, 2001 +
Omar Khayyám D, light pink, very double, 1894 5.7
Opal Brünner Cl F, light pink, double, about 1948 %
@Opening Night HT, dark red, 25-30 petals, 1998 7.8
Ophelia HT, light pink, 28 petals, 1912 7.2
Opulence HT, white, 30-35 petals, 1997 7.5
Orange Beauty Cl F, orange pink, double, 1961 7.0*
Orange Classic Min, orange blend, double, 2006 +
Orange Cluster S, orange red, double, 2006 +
Orange Everglow LCl, orange blend, semi-double, 1942 7.2
Orange Flame F, orange blend, 1983 6.9
Orange Honey Min, orange blend, 23 petals, 1979 7.6
Orange Impressionist S, orange blend, 25 petals, 2004 +
Orange Morsdag Pol, orange blend, double, 1958 8.9
Orange Parfait Min, orange blend, 18-24 petals, 1998 %
Orange Ruffels HT, orange blend, 40 petals, 1952 6.1
Orange Sensation F, orange red, 24 petals, 1961 8.1
Orange Sunblaze Min, orange red, 40 petals, 1982 7.8
Orange Triumph Pol, medium red, semi-double, 1937 7.1
Orange Velvet LCl, orange red, 37 petals, 1987 %
Orange Waves S, orange blend, 12-18 petals, 2005 +
Orangeade F, orange red, semi-double, 1960 8.1
Oranges ‘n’ Lemons S, orange blend, full, 1994 7.6
Orchid Jubilee Cl Min, mauve, double, 1992 7.6
Orchid Masterpiece HT, mauve, 68 petals, 1961 4.8
@Oregold HT, deep yellow, double, 1970 7.0
Oregon Centennial HT, medium red, 30-35 petals, 1959 7.1*
Oregon Rainbow Min, yellow blend, full, 1991 7.4
Oriental Charm HT, orange red, 11 petals, 1961 7.8
Oriental Simplex Min, orange red, single, 1987 7.8
Origami F, pink blend, 25 petals, 1987 7.5
O’Rilla HT, russet, full, 1996 7.4
Orion Gr, orange blend, 2004 +
Orlando HT, pink blend, 20-24 petals, 1995 7.4
**Orpheline de Juillet HGal, mauve, very double, before 1836 %
Osiana HT, apricot blend, 30-35 petals, 1988 7.6
Osiria HT, red blend, 50 petals, 1979 6.7
Oskar Kordel HP, medium pink, 40 petals, 1897 8.3
Othello S, medium red, very double, 1991 7.5
Our Lady of Guadalupe F, pink blend, 25 petals, 2000 8.0
Out of Africa HT, orange blend, double, 1997 7.4
Out of India HG, medium red, double, 2005 +
Out of the Night S, white, full, 2006 +
Out of Yesteryear S, white, very full, 1999 %
Outrageous F, orange blend, 25-30 petals, 1999 7.4
Outta the Blue S, mauve, full, 2000 7.9
#Over the Rainbow Min, red blend, double, 1972 7.9
Overnight Scentsation MinFl, medium pink, very full, 1997 7.5
