Cultivar NamePlant SizeLeaf ColorVariegationVar ColorOriginFlower ColorSeasonSourceRegistered
'Oasis' (Ward)LargeBlue/Green--UnknownNear-WhiteJune into JulyWard, Dr Dick & Ward, Jane.2012
'Occupy Wall Street'SmallBlue/GreenMarginalWhiteUnknown-July into AugustFreeman, Franc.2012
'Oder'MediumBlue/Green--UnknownMed-LavenderJuly into AugustKlose, Heinz--NR--
'Ohh! Lovilia'LargeYellow--UnknownNear-WhiteJune into JulySchulz, Ed.2015
'Ohio River'MediumMed-Green--Hybrid--Beilstein, Doug & Malloy, Alex--NR--
'Okefenokee'MediumMed-GreenMarginalYellowSportPale-LavenderJuly into AugustBenedict, Dr Ralph (Herb) & Walek, Kevin.2009
'OKUHIDA'----Unknown--Unknown--NR--
'Old Faithful'LargeMed-Green--HybridPure-WhiteAugust to OctoberBrincka, Wm & Petryszyn, 0lga.1991
'Old Jerusalem Road'LargeBlue/GreenStreakedWhiteUnknown--Goodenough, Rick--NR--
'Old Wethersfield'LargeDark-Green  UnknownLight-Purple Goodenough, Rick--NR--
'Olympic Glacier'MediumDark-GreenMarginalYellowSportMed-LavenderJuly into AugustNaylor Creek Nursery.2005
'Omaha'LargeBlue/Green--Unknown--Wade, Van--NR--
'Ontario Blue'LargeBlue/Green--Unknown--Wade, Van--NR--
'Ooltewah'----Unknown--Unknown--NR--
'Ophir'MediumLight-Green--UnknownPale-Lavender-Fischer, Dr Ulrich--NR--
'Orinoco Flow'MediumMed-Green--HybridPale-LavenderJuly into AugustCross, Peter.2002
'Oshkosh'-Med-Green--Hybrid--Fisher, Eunice V.--NR--
'Otara's Angel'LargeDark-GreenMarginalYellowSportNear-WhiteJune into JulyJohns, Eddie--NR--
'Otara's Sunrise'LargeMed-GreenMarginalWhiteUnknown--Johns, Eddie--NR--
'Ottawa'LargeMed-Green--Unknown--Wade, Van--NR--
'Otter Point'LargeMed-Green--UnknownMed-Lavender-Wrede, Arthur--NR--
'Outer Banks'-Blue/GreenStreakedWhiteHybrid--Goodenough, Rick--NR--
'Oxford Blue'LargeDark-GreenMedialYellowHybrid--Cullerton, Walter--NR--
'Oxford Blue Top'MiniatureBlue/Green -UnknownLight-PurpleAugust to SeptemberColley, June & Baker, John.2020
'Ozark Welcome'MediumLight-GreenMedialYellowSportPale-LavenderJune into JulyHelsley, Calvin.2004
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