Cultivar NamePlant SizeLeaf ColorVariegationVar ColorOriginFlower ColorSeasonSourceRegistered
'Il Gallo d'Oro'-Yellow-Gold--Unknown--Unknown--NR--
'Og, Son of Fire'MiniatureMed-GreenMarginalWhiteHybrid--Beilstein, Doug & Malloy, Alex--NR--
'Ogon Iwa'MediumYellow--UnknownMed-LavenderAugust to SeptemberUnknown--NR--
'Ogon Tsushima'MediumYellow--UnknownLight-PurpleJuly into AugustUnknown & Ruh, Peter.2002 .2018
'Oh! Susanna'MediumBlue/Green--HybridMed-LavenderJune into JulyReuter, Laurence & Gilligan, Madelon.2015
'OHS Calamari'SmallMed-GreenMedialWhiteTC SportLight-PurpleAugust to SeptemberLasek, Robert & Ontario Hosta Society.2008
'Okukuji Nakafu Iwa'MediumDark-GreenMedialYellowUnknown--Hisashi--NR--
'Okuyama Giboshi'SmallDark-Green--Duplicate--Duplicate Name--NR--
'Old Faithful'LargeMed-Green--HybridPure-WhiteAugust to OctoberBrincka, Wm & Petryszyn, 0lga.1991
'Oma's Sunrise'LargeBlue/Green--Unknown--Sisson, Kathie--NR--
'One Man's Treasure'MediumDark-Green--Nat-SportLight-PurpleAugust to OctoberBenedict, Dr R. (Herb) & Solberg, Robert.1999
'Ophir'MediumLight-Green--UnknownPale-Lavender-Fischer, Dr Ulrich--NR--
'Over the Waves'MediumBlue/Green--Unknown-August to SeptemberBenedict, Dr R. (Herb) & Dorothy & Kuenster, Rod.2010
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