| No. | Cultivar Name | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
|
1
| 'Ohh! Blue Beacon' | Blue/Green | | - | Unknown | Near-White | June into July | Schulz, Ed | .2013 |
|
2
| 'Ohh! Blue Bounty' | Blue/Green | | - | Unknown | Near-White | June into July | Schulz, Ed | .2011 |
|
3
| 'Ohh! Blue Bruiser' | Blue/Green | | - | Unknown | Med-Lavender | - | Schulz, Ed | .2011 |
|
4
| 'Oil Paint' | Dark-Green | Streaked | Yellow | Hybrid | Pale-Lavender | July into August | Van Eechaute, Danny | .2013 |
|
5
| 'Old Gnarly' | Blue/Green | | - | Hybrid | Pale-Lavender | - | Kruer, George | .2009 |
|
6
| 'Only You' | Med-Green | Marginal | White | Hybrid | Unknown | Unknown | Ward, Dr Dick & Ward, Jane | .2012 |
|
7
| 'Osiris Blue Night' | Blue/Green | | - | Unknown | Unknown | - | Fafard, Serge | --NR-- |
|
8
| 'Out of the Fog' | Yellow | Streaked | Green | Hybrid | Unknown | - | Myers, Gary | .2018 |
|
9
| 'Outhouse Delight' | Med-Green | Streaked | Speckles | Hybrid | Pale-Lavender | July | Avent, Tony | .1998 .1999 |
|
10
| 'Over Yu Wu' | Light-Green | | | Hybrid | Near-White | July into August | Daughenbaugh, Walt | .2021 |
|
11
| 'Overserved' | Yellow | | - | Unknown | Unknown | - | Shady Characters Nursery | --NR-- |
|