- Jack Bridger (s) - Pale blush pink. Hammett, 1981.
- Jack Davis (s) - Lavender. B.R.Jones, 1975.
- Jack Newbury (s) - Pale blue.
- Jacqueline Ann (s) - Deep lavender, cream ground. Parsons, 2008.
- Jacqueline O'Brien (s) - Orange-red. 1998.
- Janet (e,m) - White Cuthbertson Florabunda. Cuthberson.
- Janet Amy(1) (s) - White, flushed pink. Grayson, 1993.
- Janet Amy(2) (s) - Lavender. 1998.
- Janet Scott (g) - Clear pink. Morse, 1903.
- Janetta Harrod (s) - Cream. Harrod, 2006.
- Jayne Amanda (s) - Pale magenta. Truslove, 1984.
- Jean Ireland (s) - Carmine pink picotee, cream ground. Dobbie, 1915.
- Jeannie (s) - Cream. Harrod, 2007.
- Jemima (s) - Cerise rose pink. Beane, 2009.
- Jemma - Deep Blue. Grayson, 1993.
- Jenny (e,m) - White Cuthbertson Florabunda. Cuthbertson.
- Jessie (e,m) - Royal mauve Cuthbertson Florabunda. Cuthbertson.
- Jewel - Synonym of Rowallane.
- Jill Walton (s) - Salmon pink, cream ground. Gubb, 1993
- Jilly (s) - Cream. Harriss, 1988.
- Jim (s) - Cream. Parsons, 2008.
- Jimmy (e,m) - Scarlet Cuthbertson Florabunda. Cuthbertson.
- Jimmy MacBain (s) - Pale pink. Brewer, 1997.
- Jimmy Young (s) - White. 1998.
- Joan (e,m) - Rose picotee Cuthbertson Florabunda. Cuthbertson.
- Joan Elizabeth Child (s) - Orange carmine. Parsons, 2012.
- Joe Ede (s) - Salmon pink, cream ground. Brewer, 1987.
- John Adie (s) - Magenta. Adie 2009.
- John Gray (s) - Pale pink. Parsons, 2009.
- John McGregor (s) - Cerise scarlet. 1962.
- John Ness (s) - Lavender. 1958.
- Joker (s) - Maroon. 1973.
- Joy (e,m) - Salmon pink Cuthbertson Florabunda. Cuthbertson.
- Joyce Stanton (s) - Dark blue. Manston, 2009.
- Jubilee (s) - Lavender flush. 2003.
- Judith Wilkinson (s) - Carmine crimson. Truslove, 2008.
- Julie Ann (s) - Carmine. 2011.
- Juliet (g) - Cream. 2002.
- June (e,m) - Salmon rose EMG.
- Just Jean (s) - Salmon pink cream ground.
- Just Jenny (s) - Dark blue. 2005.
- Just Julia (s) - Mid Blue. Parsons, 2011.