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 to 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 September to October | Brincka, Wm & Petryszyn, 0lga | .1991 |
8
| 'Old Rough House' | Giant | Blue/Green | | | Unknown | Unknown | 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 | |
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 September 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 to August | Solberg, Robert | .2002 |
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