Cultivar NamePlant SizeLeaf ColorVariegationVar ColorOriginFlower ColorSeasonSourceRegistered
'O Kanzashi'MediumMed-Green -Nat-SportLight-Purple-Unknown--NR--
'Oberland Thin Line'MediumBlue/GreenMarginalYellowNat-SportPale-LavenderJuly into AugustRank, Stefan--NR--
'October Sky'MediumBlue/Green -HybridNear-WhiteAugust to SeptemberDean, Don.2008
'Odd Goddess'MediumMed-Green -HybridPale-LavenderJune into JulyKwick, Charles.2017
'Ogon Hime Tokudama'SmallLight-Green -UnknownPale-LavenderJune into JulyUnknown & Ruh, Peter.2002 .2018
'Ogon Iwa'MediumYellow -UnknownMed-LavenderAugust to SeptemberUnknown--NR--
'Ogon Sudare'SmallYellow -UnknownPale-LavenderJulyLantis, Clarence & Ruh, Peter.2002 .2018
'Ogon Tachi'LargeLight-Green -UnknownDeep-PurpleAugustLantis, Clarence & Ruh, Peter.2002 .2018
'Ogon Tsushima'MediumYellow -UnknownLight-PurpleJuly into AugustUnknown & Ruh, Peter.2002 .2018
'Ohh! Blue Beacon'SmallBlue/Green -UnknownNear-WhiteJune into JulySchulz, Ed.2013
'Ohh! Blue Bounty'LargeBlue/Green -UnknownNear-WhiteJune into JulySchulz, Ed.2011
'Ohh! Blue Bruiser'GiantBlue/Green -UnknownMed-Lavender-Schulz, Ed.2011
'Ohh! Blue Granite'MediumBlue/Green -UnknownNear-WhiteJune into JulySchulz, Ed.2018
'Ohh! His Blue Eyes'LargeBlue/Green -UnknownMed-LavenderJune into JulySchulz, Ed.2017
'Ohh! Jewell'LargeYellow -UnknownNear-WhiteJune into JulySchulz, Ed.2017
'Ohh! Viola'MediumYellow -UnknownNear-WhiteJune into JulySchulz, Ed.2015
'OHS Margot's Delight'MediumBlue/Green -Nat-SportPale-LavenderJuly into AugustOntario Hosta Society--NR--
'Ojibway'MediumBlue/Green -Unknown--Wade, Van--NR--
'Old Bill'GiantBlue/Green -HybridPale-LavenderJune into JulyGilligan, Madelon.2012
'Old Ironsides'GiantLight-Green -Nat-SportMed-LavenderJulySummers, Alex--NR--
'Old Smoky'LargeMed-Green -HybridNear-WhiteJune into JulyMcDonell, Harold.2014
'One Fine Day'MediumMed-GreenMarginalYellowHybridNear-WhiteJune into JulyWard, Dr Dick & Jane.2012
'Orphan Train Rider'SmallLight-Green -UnknownMed-LavenderJuly into AugustKwick, Charles.2017
'Orphan Train Ruffian'MediumDark-Green -HybridPale-LavenderJuly into AugustKwick, Charles.2017
'Osiris Ovation'LargeYellow -UnknownPale-Lavender-Fafard, Serge--NR--
'Otara's Angel'LargeDark-GreenMarginalYellowNat-SportNear-WhiteJune into JulyJohns, Eddie--NR--
'Ottawa'LargeMed-Green -Unknown--Wade, Van--NR--
'Ovalwood'LargeBlue/Green -HybridNear-WhiteJulyBeilstein, Doug & Mardy.2012
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