- Baby Cupid - synonym of Cherub Pink.
- Ballerina (s) - Picotee, cream ground. 1960.
- Ballerina Blue (s) - Mid Blue. Welch, 2011
- Balmoral(1) (s) - Orange.
- Balmoral(2) (s) - Dark Maroon. Brackley, 1994.
- Band Aid (s) - Salmon pink, cream ground. Harriss, 1987
- Banty (s) - Rose pink. Leese, 2008.
- Barbara (s) - Orange-salmon. Holmes, 1912.
- Baronscourt (s) - Mauve. Harrod, 1999.
- Barry Dare (s) - Cerise. 1997
- Bashful - Synonym of Laura Webster.
- Batheaston (s) - Pale pink. James, 1983.
- Beacon (s) - Scarlet. 1979.
- Beaujolais (s) - Maroon. Sutton, 1972.
- Ben Lomond (s) - White. 1961-1971.
- Benjamin Townsend (g) - White. Grayson, 1997.
- Bert Boucher (s) - White. Brewer, 1995.
- Beth Chatto (s) - Pale pink, cream ground. 2010.
- Betty Maiden (s) - Blue flake. Beane, 2008.
- Big Blue (s) - Mid blue. Hammett, 2009.
- Bijou (d,s) - A series of six large flowered dwarfs. 1966.
- Bill's Choice (s) - Rose pink. Truslove, 2008.
- Bishop's Rock (s) - Mid blue. Albutt, 1998
- Black Diamond(1) (s) - Dark maroon. 1931.
- Black Diamond(2) (s) - Maroon. 1975.
- Black Knight (g) - Deep maroon. Eckford, 1898.
- Black Prince(1) (e) - A Spencer Praecox variety.
- Black Prince(2) (s) - Maroon. 1975.
- Blackberry (g) - Maroon old fashioned sweet pea. 2009.
- Blackberry Ice (s) - Mid blue bicolour. 2001.
- Blackcurrant Mousse (s) - Mauve. 1999
- Blanche Ferry (g) - Pink/white bicolour. Ferry 1889.
- Blaze (s) - Orange-scarlet. 1974.
- Blondel (s) - Cream. 1985.
- Blondie (s) - Pale salmon. Harrod.
- Blue Beguine (s) - Mid blue. Harrod, 2007.
- Blue Celeste (s) - Pale blue. Shepherd, 2003.
- Blue Danube (s) - Mid blue. 1981.
- Blue Heaven (s) - Pale blue. 1974.
- Blue Heron (g) - Blue flush, white ground.
- Blue Ice (s) - Pale blue. 1994.
- Blue Mantle (s) - Mid blue.
- Blue Pearl (s) - Blue Flush. Francis, 1994.
- Blue Queen (s) - Mid blue. Simons, pre 1963.
- Blue Ripple (s) - Blue stripe. 1989.
- Blue Shift - Mauve, ageing to turquoise and ultramarine. Hammett.
- Blue Triumph (s) - Mid blue. 1976.
- Blue Vein - Orange, developing blue veins. Hammett, 2008.
- Blue Velvet (s) - Dark blue. Unwin, 1972.
- Blue Wonder (e) - A Spencer Praecox.
- Blush Strokes (s) - Orange flake, cream ground. 2003.
- Blushing Bride (s) - Rose pink, cream ground. Albutt, 1989.
- Bobby Bolton (s)- Cerise. 2002.
- Bobby Chisholm (s) - Rosy lavender. Chisholm, 2011.
- Bobby's Girl (s) - Salmon pink, cream ground. Bolton, 2000.
- Bonnie Galloway (s) - Scarlet. Robson, 2012.
- Border Beauty (s) - pale lavender flush. Parsons.
- Borderline - Magenta stripe. 2004.
- Bouquet (m) - A series of ten multiflora sweet peas. Pan American, ca 1997.
- Bowhouse (s) - Mauve. Chisholm, 1996.
- Bramdean (g) - White. Wakefield, 2007.
- Brenda - Synonym for Brenda Bridger.
- Brenda Bridger - Rich pink bicolour. Hammett, 1987.
- Brian Clough (s) - Orange pink. B.R.Jones, 1982.
- Brian Haynes - Lavender flake. Beane, 2007.
- Bridget (s) - Light maroon. 1996.
- Bridget Elizabeth (s) - Rose pink, white ground. Albutt, 2002.
- Bright Dawn (s) - Orange. Francis.
- Bright Eyes (s) - Cerise. 1953.
- Brightness (e) - A Spencer Praecox.
- Brilliant Blue (g) - Purplish blue. The American release of Lord Nelson. 1907.
- Bristol (s) - Light blue. Kerton, 1994.
- Bristol Cream (s) - Cream. Albutt, 1990.
- Brocade (s) - Mauve. 1994.
- Brook Hall (s) - White. Harrod, 2006.
- Brush Strokes - Orange flake, cream ground.
- Buccaneer (s) - Crimson. 1987.
- Burlesque (s) - Blue flake. Hammett, 2009.
- Burnished Bronze (s) - Bright reddish maroon. Harrod, 1991.
- Butter Ice (g) - Cream. 1998.
- Butterfly (g) - White shaded with mauve. Sutton, 1878.