| No. | Cultivar Name | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
|
1
| 'Oberland Advanced Technology' | Large | Light-Green | Marginal | White | Unknown | Pale-Lavender | July into August | Rank, Stefan | .2013 |
|
2
| 'Oberland Colourful Noise' | Large | Dark-Green | Streaked | White | Sport | Med-Lavender | July into August | Rank, Stefan | .2013 |
|
3
| 'Ocean Isle Tide Line' | Medium | Dark-Green | Medial | White | Unknown | Unknown | - | Chopko, Dave | --NR-- |
|
4
| 'Oddity Prize' | Medium | Yellow | Medial | White | Unknown | Unknown | - | Meyer, Bill | --NR-- |
|
5
| 'Ogon Tachi' | Large | Light-Green | | - | Unknown | Deep-Purple | August | Unknown & Ruh, Peter | .2002 .2018 |
|
6
| 'Oh Charlie' | Large | Med-Green | Marginal | Yellow | TC Sport | Pale-Lavender | July | Ziarek, Ken | --NR-- |
|
7
| 'Ohh! Blue Bruiser' | Giant | Blue/Green | | - | Unknown | Med-Lavender | - | Schulz, Ed | .2011 |
|
8
| 'Ohh! Blue Finale' | Large | Blue/Green | | | Unknown | Pale-Lavender | June into July | Schulz, Ed | .2021 |
|
9
| 'Ohh! Clare' | Large | Yellow | | - | Unknown | Unknown | July into August | Schulz, Ed | .2016 |
|
10
| 'Ohh! Lovilia' | Large | Yellow | | - | Unknown | Near-White | June into July | Schulz, Ed | .2015 |
|
11
| 'Ohh! Powder River Blue' | Large | Blue/Green | | - | Unknown | Near-White | June into July | Schulz, Ed | .2020 |
|
12
| 'Okobaji' | Small | Blue/Green | | - | Unknown | Unknown | - | Tompkins, Chet & Ruh, Peter & Ruh, Jean | .2008 |
|
13
| 'Oldie but Goldie' | Large | Yellow | | | Unknown | Unknown | Unknown | Ziarek, Ken | --NR-- |
|
14
| 'Olive Oil' | Medium | Yellow | | - | Hybrid | Pale-Lavender | - | Dishon, Jim | .1996 |
|
15
| 'Olympic Magic' | Medium | Light-Green | Streaked | Speckles | Sport | Pale-Lavender | July | Naylor Creek Nursery | --NR-- |
|
16
| 'OMG' | Large | Blue/Green | Streaked | Yellow | Unknown | Unknown | - | Livingston, Ron | --NR-- |
|
17
| 'Orphan Train Twins' | Medium | Dark-Green | | | Hybrid | Pale-Lavender | July | Kwick, Charles | .2021 |
|
18
| 'Oshimajishi' | Small | Dark-Green | Medial | Green | Hybrid | Unknown | - | Unknown | --NR-- |
|
19
| 'Out of This World' | Medium | Dark-Green | | - | Hybrid | Light-Purple | June | Goodwin, Randy | .2020 |
|
20
| 'Outrageous Dragon' | - | Dark-Green | Streaked | White | Hybrid | Unknown | July into August | Kuenster, Rod | .2010 |
|