Unsupported cultivar names
In the following list, cultivar names have been recorded without attribution or description and additional information is unavailable at the time of going to print.
History or knowledge of these cultivars should be sent to the Registrar for inclusion in the Addendum.
- U
- ‘Uetty Lace’
- ‘Ulm Robin im Rosa’
- ‘Ulmer Silver’
- ‘Ulyona’
- ‘Undergraduate’
- ‘Unidette’
- ‘Unique Carmin’
- ‘Unique Molle’
- ‘Unique Polka’
- ‘Unique Superba’
- ‘Unit’
- ‘United States’
- ‘Upright Coconut’
- ‘Utility’
- ‘Uxbridge Magnet’