No.Cultivar NameSourcePlant SizeLeaf ColorVariegationVar ColorOriginFlower ColorSeasonRegistered
1 'Old Gold Edge'Tompkins, CynthiaMediumDark-GreenMarginalYellowUnknown----NR--
2 'Omega'UnknownLargeMed-GreenMarginalYellowUnknown----NR--
3 'OmegaOmega'Jolliffe, Thomas----Unknown----NR--
4 'Oriana'Smith, EricMediumYellow--SportPale-LavenderJuly into August--NR--
5 'Osprey'Smith, Eric & British Hosta and Hemerocallis SocietyMediumBlue/Green--UnknownPure-WhiteJune into July.1988
6 'Oxford Blue Top'Colley, June & Baker, JohnMiniatureBlue/Green -UnknownLight-PurpleAugust to September.2020

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