No.Cultivar NamePlant SizeLeaf ColorVariegationVar ColorOriginSeasonSourceRegistered
1 'Oberland Advanced Technology'LargeLight-GreenMarginalWhiteUnknownJuly into AugustRank, Stefan.2013
2 'Oberland Colourful Noise'LargeDark-GreenStreakedWhiteSportJuly into AugustRank, Stefan.2013
3 'Oberland Spring Air'MediumMed-GreenMedialWhiteSportJuly into AugustRank, Stefan.2013
4 'Oberland Thin Line'MediumBlue/GreenMarginalYellowSportJuly into AugustRank, Stefan--NR--
5 'Obsession'MediumMed-GreenMarginalGreenish WhiteSportAugustAvent, Tony.1998
6 'Occupy Wall Street'SmallBlue/GreenMarginalWhiteUnknownJuly into AugustFreeman, Franc.2012
7 'Ocean Isle Gold Dust'MediumLight-GreenMedialYellowSportJuly into AugustChopko, Dave--NR--
8 'Ocean Isle Tornado'MediumMed-GreenMedialWhiteSportJuly into AugustChopko, Dave--NR--
9 'Ocean Isle Twist'MediumDark-GreenMedialWhiteSportJuly into AugustChopko, Dave.2006
10 'Oceans Blue'LargeBlue/Green--UnknownJuly into AugustSchmidt, Bevie.2009
11 'October Sky'MediumBlue/Green--HybridAugust to SeptemberDean, Don.2008
12 'Oder'MediumBlue/Green--UnknownJuly into AugustKlose, Heinz--NR--
13 'Oga'MediumMed-Green--HybridAugustUnknown--NR--
14 'Ogon Iwa'MediumYellow--UnknownAugust to SeptemberUnknown--NR--
15 'Ogon Koba'SmallYellow--UnknownAugustUnknown--NR--
16 'Ogon Kuro'GiantYellow--SportJuly into AugustUnknown--NR--
17 'Ogon Sagae'MediumYellow--UnknownJuly into AugustUnknown--NR--
18 'Ogon Tachi'LargeLight-Green--UnknownAugustLantis, Clarence & Ruh, Peter.2002 .2018
19 'Ogon Tsushima'MediumYellow--UnknownJuly into AugustUnknown & Ruh, Peter.2002 .2018
20 'Ohh! Clare'LargeYellow--UnknownJuly into AugustSchulz, Ed.2016
21 'Ohh! Elvira'LargeYellow--UnknownJuly into AugustSchulz, Ed.2016
22 'Ohh! Richland Reward'MediumYellowMarginalWhiteTC SportJuly into AugustSchulz, Ed--NR--
23 'OHS Calamari'SmallMed-GreenMedialWhiteTC SportAugust to SeptemberLasek, Robert & Ontario Hosta Society.2008
24 'OHS Juno'MediumBlue/Green--SportJuly into AugustOntario Hosta Society--NR--
25 'OHS Margot's Delight'MediumBlue/Green--SportJuly into AugustOntario Hosta Society--NR--
26 'Oil Paint'MediumDark-GreenStreakedYellowHybridJuly into AugustVan Eechaute, Danny.2013
27 'Okaydokey'MediumYellowMarginalDark GreenSportJuly into AugustWalters Gardens & Walek, Kevin.2009
28 'Okazaki'SmallMed-Green--HybridAugust to SeptemberSugita, Hajime & Ruh, Peter & Ruh, Jean.2002
29 'Okefenokee'MediumMed-GreenMarginalYellowSportJuly into AugustBenedict, Dr Ralph (Herb) & Walek, Kevin.2009
30 'Okutama Nishiki'SmallMed-GreenMedialYellowUnknownAugust to OctoberUnknown--NR--
31 'Old Faithful'LargeMed-Green--HybridAugust to OctoberBrincka, Wm & Petryszyn, 0lga.1991
32 'Olga Gibosa'LargeMed-Green--UnknownJuly into AugustWade, Van--NR--
33 'Olympic Fab Five'MediumYellow--UnknownJuly into AugustFreeman, Franc.2012
34 'Olympic Glacier'MediumDark-GreenMarginalYellowSportJuly into AugustNaylor Creek Nursery.2005
35 'Olympic Gold'MediumYellow--UnknownJuly into AugustBanyai, Pauline.1986
36 'Olympic Gold Medal'MediumYellow--SportJuly into AugustFransen, Marco & Naylor Creek Nursery--NR--
37 'Olympic Silver Medal'MediumBlue/Green--SportJuly into AugustFransen, Marco & Naylor Creek Nursery--NR--
38 'Olympic Sunrise'MediumBlue/GreenMedialYellowSportJuly into AugustNaylor Creek Nursery.2005
39 'Olympic Torch'LargeYellow--HybridJuly into AugustGoodwin, Randy.2009
40 'Olympic Twilight'MediumBlue/GreenMarginalYellowSportJuly into AugustNaylor Creek Nursery--NR--
41 'On Fire'MediumBlue/GreenStreakedYellowTC SportJuly into AugustZilis, Mark.2011
42 'On the Border'MediumMed-GreenMarginalWhiteHybridAugustBeilstein, Doug.2007
43 'On the Marc'MediumMed-GreenMedialYellowSportAugustLaviana, Marc & Malloy, Alex.1999
44 'Once upon a Time'MediumMed-GreenMarginalWhiteHybridAugustWilkins, Dr Jim & Wilkins, Sandy.2002
45 'One Man's Treasure'MediumDark-Green--SportAugust to OctoberBenedict, Dr Ralph (Herb) & Solberg, Robert.1999
46 'OOME'LargeBlue/GreenStreakedSpecklesHybridJuly into AugustGussman, Christopher.2009
47 'Opipara'MediumMed-GreenMarginalYellowUnknownJuly into AugustMaekawa, Dr Fumio & The American Hosta Society.2002
48 'Opipara Koriyama'MediumMed-GreenMarginalWhiteUnknownAugustUnknown--NR--
49 'Orange Marmalade'LargeMed-GreenMedialWhiteSportJuly into AugustSolberg, Robert.2002
50 'Orange Slices'MediumYellow--TC SportJuly into AugustZilis, Mark.2003
51 'Orange Star'MediumYellow--SportJuly into AugustVan den Top, Jan--NR--
52 'Oreo Cream'MediumDark-GreenMedialWhiteSportJuly into AugustZiarek, Ken--NR--
53 'Oriana'MediumYellow--SportJuly into AugustSmith, Eric--NR--
54 'Orinoco Flow'MediumMed-Green--HybridJuly into AugustCross, Peter.2002
55 'Orphan Train Rider'SmallLight-Green--UnknownJuly into AugustKwick, Charles.2017
56 'Orphan Train Ruffian'MediumDark-Green--HybridJuly into AugustKwick, Charles.2017
57 'Oshima Silk'MediumMed-GreenMarginalWhiteHybridAugust to SeptemberShimizu, Toshirou & Zilis, Mark.2009
58 'Osiris Folichon'MediumMed-Green--UnknownAugustFafard, Serge--NR--
59 'Otao Keikoku'SmallMed-Green--UnknownAugustSavory, Robert--NR--
60 'Otome-no-Ka'MediumDark-Green--UnknownAugustWatanabe, Kenji & Ruh, Peter.2002
61 'Ototo San'MiniatureDark-GreenMarginalWhiteUnknownAugust to SeptemberRuh, Peter.1990 .2018
62 'Outer Limits'MediumMed-GreenMedialSpecklesSportJuly into AugustBennerup, Pierre.2000
63 'Outrageous Dragon'-Dark-GreenStreakedWhiteHybridJuly into AugustKuenster, Rod.2010
64 'Over the Waves'MediumBlue/Green--UnknownAugust to SeptemberBenedict, Dr Ralph (Herb) & Kuenster, Rod.2010
65 'Oxford Blue Top'MiniatureBlue/Green -UnknownAugust to SeptemberColley, June & Baker, John.2020
66 'Oze'MiniatureMed-GreenMarginalYellowUnknownAugustUnknown--NR--
67 'Oze Shirobana Mizu'MediumMed-Green--SportAugust to OctoberUnknown--NR--
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