| No. | Cultivar Name | Source | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Registered |
|
1
| 'Uncle Hirsch' | Graves, Butch | - | Blue/Green | Marginal | Yellow | Hybrid | - | August to September | .2008 |
|
2
| 'Uncle Miltie' | Whitmer, Milt | | - | | - | Unknown | - | - | --NR-- |
|
3
| 'Undulata Wade #101' | Wade, Van | Medium | Med-Green | Medial | White | Sport | Light-Purple | June | --NR-- |
|
4
| 'Undulata Wade #102' | Wade, Van | Medium | Med-Green | Medial | White | Sport | Pale-Lavender | July | --NR-- |
|
5
| 'Unforgettable' | Kuk, Bob | Large | Blue/Green | Marginal | Yellow | Hybrid | Pale-Lavender | July | .1999 |
|
6
| 'Upbeat' | Ruh, Peter | Giant | Med-Green | - | - | Hybrid | Pale-Lavender | July | .2000 |
|
7
| 'Upper Echelon' | Ward, Dr Dick & Ward, Jane | Medium | Blue/Green | - | - | Hybrid | - | June into July | .2013 |
|
8
| 'Urchin' | Beilstein, Doug & Beilstein, Mardy | Small | Med-Green | - | - | Hybrid | Med-Lavender | July into August | .2013 |
|
9
| 'Ute' | Wade, Van | Large | Blue/Green | - | - | Unknown | - | - | --NR-- |
|