| No. | 5-Star Hosta Images | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
|
1
| 'Obsession' | Medium | Med-Green | Marginal | Greenish White | Sport | Light-Purple | August | Avent, Tony | .1998 |
|
2
| 'Ocean Tide' | Large | Blue/Green | - | - | Hybrid | Near-White | June into July | Mondt, Manfred | --NR-- |
|
3
| 'October Sky' | Medium | Blue/Green | - | - | Hybrid | Near-White | August to September | Dean, Don | .2008 |
|
4
| 'Ogon Amagi Iwa' | Medium | Dark-Green | - | - | Sport | Light-Purple | September | Unknown & Walek, Kevin & The American Hosta Society | .2009 .2018 |
|
5
| 'Ogon Tachi' | Large | Light-Green | - | - | Unknown | Deep-Purple | August | Unknown & Ruh, Peter | .2002 .2018 |
|
6
| 'Oh My Heart' | Medium | Med-Green | - | - | Unknown | Light-Purple | July | Lydell, Ransom | .2001 |
|
7
| 'Old Faithful' | Large | Med-Green | - | - | Hybrid | Pure-White | August to October | Brincka, Wm & Petryszyn, 0lga | .1991 |
|
8
| 'Old Rough House' | Giant | Blue/Green | - | - | Unknown | - | - | Wade, Van | --NR-- |
|
9
| 'Olive Branch' | Medium | Med-Green | Medial | Yellow | TC Sport | Pale-Lavender | July | Moldovan, Steve & Ruh, Peter & Ruh, Jean | .2008 |
|
10
| 'On Stage' | - | - | - | - | Duplicate | - | - | Duplicate Name | .1986 |
|
11
| 'On the Border' | Medium | Med-Green | Marginal | White | Hybrid | Pale-Lavender | August | Beilstein, Doug | .2007 |
|
12
| 'On the Edge' | Medium | Light-Green | Marginal | Blue-Green | Sport | Near-White | June | Scolnik, Patricia | --NR-- |
|
13
| 'Once upon a Time' | Medium | Med-Green | Marginal | White | Hybrid | Near-White | August | Wilkins, Dr Jim & Wilkins, Sandy | .2002 |
|
14
| 'One Man's Treasure' | Medium | Dark-Green | - | - | Sport | Light-Purple | August to October | Benedict, Dr Ralph (Herb) & Solberg, Robert | .1999 |
|
15
| 'Ooh La La' | Medium | Blue/Green | Medial | Yellow | Hybrid | Light-Purple | July | Elslager, Ed | .2000 |
|
16
| 'Opipara Koriyama' | Medium | Med-Green | Marginal | White | Unknown | Light-Purple | August | Unknown | --NR-- |
|
17
| 'Orange Marmalade' | Large | Med-Green | Medial | White | Sport | Pale-Lavender | July into August | Solberg, Robert | .2002 |
|