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No.Cultivar NameLeaf ColorVariegationVar ColorOriginFlower ColorSeasonSourceRegistered
1 'Oberland Darkness'Dark-Green  HybridUnknownUnknownRank, Stefan--NR--
2 'Ocean Isle Gold Dust'Light-GreenMedialYellowSportMed-LavenderJuly to AugustChopko, Dave--NR--
3 'Ocean Isle Tide Line'Dark-GreenMedialWhiteUnknownUnknownUnknownChopko, Dave--NR--
4 'Oceans Blue'Blue/Green  UnknownUnknownJuly to AugustSchmidt, Bevie.2009
5 'October Sky'Blue/Green  HybridNear-WhiteAugust to SeptemberDean, Don.2008
6 'Oddity Prize'YellowMedialWhiteUnknownUnknownUnknownMeyer, Bill--NR--
7 'Ogon Amagi Iwa'Dark-Green  SportLight-PurpleSeptemberUnknown & Walek, Kevin & The American Hosta Society.2009 .2018
8 'Ogon Tachi'Light-Green  UnknownDeep-PurpleAugustUnknown & Ruh, Peter.2002 .2018
9 'Oh Cindy'Light-Green  SportPale-LavenderJulyBenedict, Dr Ralph (Herb)--NR--
10 'Oh! Susanna'Blue/Green  HybridMed-LavenderJune to JulyReuter, Laurence & Gilligan, Madelon.2015
11 'Ohh! Blue Beacon'Blue/Green  UnknownNear-WhiteJune to JulySchulz, Ed.2013
12 'Ohh! Charlotte!'Yellow  UnknownUnknownJune to JulySchulz, Ed.2012
13 'Ohh! Elvira'Yellow  UnknownUnknownJuly to AugustSchulz, Ed.2016
14 'Ohh! His Blue Eyes'Blue/Green  UnknownMed-LavenderJune to JulySchulz, Ed.2017
15 'Ohh! Laurel'Yellow  UnknownUnknownUnknownSchulz, Ed.2009
16 'Ohh! Powder River Blue'Blue/Green  UnknownNear-WhiteJune to JulySchulz, Ed.2020
17 'Ohh! Valeria'Yellow  UnknownUnknownUnknownSchulz, Ed.2009
18 'Okeanos'Dark-GreenStreakedWhiteUnknownUnknownUnknownLeuckx, Bart--NR--
19 'Old Blue Whaler'Blue/GreenStreakedUnknownUnknownUnknownUnknownGoodenough, Rick--NR--
20 'Old School'Dark-GreenStreakedWhiteUnknownUnknownUnknownGoodenough, Rick--NR--
21 'Old Wethersfield'Dark-Green  UnknownLight-PurpleUnknownGoodenough, Rick--NR--
22 'Olive Bailey Langdon'Blue/GreenMarginalYellowSportNear-WhiteJuneO'Harra, Russ & Russ O'Harra Hosta Society.1999
23 'Olive Oil'Yellow  HybridPale-LavenderUnknownDishon, Jim.1996
24 'Olympic Fab Five'Yellow  UnknownUnknownJuly to AugustFreeman, Franc.2012
25 'Olympic Torch'Yellow  HybridUnknownJuly to AugustGoodwin, Randy.2009
26 'Omar the Tentmaker'Med-Green  UnknownUnknownUnknownUnknown--NR--
27 'Oma's Sunrise'Blue/Green  UnknownUnknownUnknownSisson, Kathie--NR--
28 'On Golden Pond'Dark-GreenMarginalYellowHybridNear-WhiteJulyElslager, Ed.2005
29 'Ontario Blue'Blue/Green  UnknownUnknownUnknownWade, Van--NR--
30 'Oracle'Med-Green  UnknownUnknownJune to JulyWard, Dr Dick & Ward, Jane.2003
31 'Orion's Belt'Blue/Green  HybridPale-LavenderJulyWard, Dr Dick & Ward, Jane.2003
32 'Ottawa'Med-Green  UnknownUnknownUnknownWade, Van--NR--
33 'Otter Point'Med-Green  UnknownMed-LavenderUnknownWrede, Arthur--NR--
34 'Out of the Fog'YellowStreakedGreenHybridUnknownUnknownMyers, Gary.2018
35 'Outrageous'Dark-GreenStreakedWhiteHybridPure-WhiteJulyBenedict, Dr Ralph (Herb) & Walek, Kevin & The American Hosta Society.2009
36 'Outrageous Dragon'Dark-GreenStreakedWhiteHybridUnknownJuly to AugustKuenster, Rod.2010
37 'Ovation'Yellow  HybridPale-LavenderJulyFafard, Serge--NR--
38 'Over the Waves'Blue/Green  UnknownUnknownAugust to SeptemberBenedict, Dr Ralph (Herb) & Kuenster, Rod.2010
39 'Owens Outrage'Light-Green  UnknownMed-LavenderUnknownMoore, Jeff--NR--

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