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No.Cultivar NamePlant SizeLeaf ColorVariegationVar ColorOriginFlower ColorSeasonSourceRegistered
1 'L'Île d'Orléans'MediumLight-Green--UnknownNear-White-Bastille, Jocelyne--NR--
2 'Oasis' (Ward)LargeBlue/Green--UnknownNear-WhiteJune into JulyWard, Dr Dick & Ward, Jane.2012
3 'Ocean Isle Tie Dye'MediumYellowMedialGreenSportPale-LavenderJuneChopko, Dave--NR--
4 'Odd Ball'MediumBlue/Green--HybridNear-WhiteJulyBenedict, Dr Ralph (Herb).1995
5 'Odina'LargeBlue/Green--Unknown--Wade, Van--NR--
6 'Oglala'GiantBlue/Green--Unknown--Wade, Van--NR--
7 'Ogon Amagi Iwa'MediumDark-Green--SportLight-PurpleSeptemberUnknown & Walek, Kevin.2009 .2018
8 'Oh My Heart'MediumMed-Green--UnknownLight-PurpleJulyLydell, Ransom.2001
9 'Ohh! Blue Finale'LargeBlue/Green  UnknownPale-LavenderJune into JulySchultz, Ed.2021
10 'Ohh! Ultra Aqua'MediumBlue/Green--Unknown--Schulz, Ed--NR--
11 'OHS Calamari'SmallMed-GreenMedialWhiteTC SportLight-PurpleAugust to SeptemberLasek, Robert & Ontario Hosta Society.2008
12 'Ojibway'MediumBlue/Green--Unknown--Wade, Van--NR--
13 'Old Black Magic'MediumDark-Green--HybridPale-LavenderJulyElslager, Ed.1999
14 'Old Coot'SmallDark-Green--HybridPale-LavenderJulyJohnson, Greg.2004
15 'Old Rough House'GiantBlue/Green--Unknown--Wade, Van--NR--
16 'Olive Branch'MediumMed-GreenMedialYellowTC SportPale-LavenderJulyMoldovan, Steve & Ruh, Peter & Ruh, Jean.2008
17 'Olive's Freckles'GiantMed-Green--UnknownPale-LavenderJulyPauley, Olive--NR--
18 'Olympic Gold Medal'MediumYellow--SportPale-LavenderJuly into AugustFransen, Marco & Naylor Creek Nursery--NR--
19 'Olympic Silver Medal'MediumBlue/Green--SportPale-LavenderJuly into AugustFransen, Marco & Naylor Creek Nursery--NR--
20 'Olympic Sunrise'MediumBlue/GreenMedialYellowSportPale-LavenderJuly into AugustNaylor Creek Nursery.2005
21 'Olympic Twilight'MediumBlue/GreenMarginalYellowSportPale-LavenderJuly into AugustNaylor Creek Nursery--NR--
22 'On the Edge'MediumLight-GreenMarginalBlue-GreenSportNear-WhiteJuneScolnik, Patricia--NR--
23 'One Man's Treasure'MediumDark-Green--SportLight-PurpleAugust to OctoberBenedict, Dr Ralph (Herb) & Solberg, Robert.1999
24 'OOME'LargeBlue/GreenStreakedSpecklesHybrid-July into AugustGussman, Christopher.2009
25 'Orion's Belt'LargeBlue/Green--HybridPale-LavenderJulyWard, Dr Dick & Ward, Jane.2003
26 'Oyo Como Va'MediumMed-Green--Unknown--Bastille, Jocelyne--NR--
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