Cultivar NamePlant SizeOriginFlower ColorSeasonSourceRegistered
'Ichabod Crane'LargeHybridPale-LavenderJune into JulyBalitewicz, Bob--NR--
'Iliamna Monster'GiantUnknown--Unknown--NR--
'Immense'GiantHybridNear-WhiteJulyRuh, Peter.1991
'Imperial Majesty'LargeHybridPale-LavenderAugustSellers, Van & Ruh, Peter.2003
'Imperial Moth'MediumUnknownLight-PurpleJulySeaver, Mildred.2004
'Impressive'SmallUnknown--Goodwin, Randy--NR--
'Impressive Reject'LargeHybridNear-WhiteJune into JulyKwick, Charles.2019
'In the Ruff'MediumSportPale-LavenderJulyUnknown--NR--
'Incoming'MediumHybridPale-LavenderJulyDeckert, Emile & Deckert, Jane.2004
'Incredible Hulk'GiantUnknownPale-LavenderJulyElslager, Ed.1998
'Indian Hills'LargeHybridNear-WhiteJuneSavory, Dennis.1989
'Indian Summer' (Summers)MediumUnknown--Summers, Alex--NR--
'Indy Fan Favorite'SmallUnknownLight-PurpleAugustGoodwin, Randy.2014
'Inkwell'MiniatureSportLight-PurpleJulyGreen Mountain Hosta--NR--
'Inky Dinky'MediumSportLight-PurpleJulyTrucks, Gary--NR--
'Inland Sea'MediumHybridLight-PurpleAugustSugita, Hajime & Zilis, Mark.1998
'Innisjade'MediumTC SportPale-LavenderJune into JulyZilis, Mark & Walek, Kevin.2009
'Innovation'MediumHybridPure-White-Nesmith, Elizabeth & Ruh, Peter.1996
'Intrigue Green'LargeSportMed-LavenderJulyWade, Van--NR--
'Invincible'MediumHybridPale-LavenderAugustAden, Paul.1986
'Irish Hills'GiantSportPale-LavenderJuly into AugustAnderson, Kenneth.1996
'Irish Longlegs'MediumHybrid--Barta, Jack--NR--
'Irish Luck'LargeHybridPale-LavenderJuly into AugustLalonde, Irene.2007
'Irish Moss'MediumUnknownPale-LavenderJulyDeckert, Emile & Deckert, Jane.2004
'Irish Pearl'SmallUnknownPale-LavenderAugust to SeptemberGoodwin, Randy.2017
'Iron Gate Bouquet'MediumUnknownLight-PurpleAugustSellers, Van.1983
'Iron Gate Supreme Green'LargeSportPale-LavenderAugustWade, Van--NR--
'Island Flourish'MediumHybrid-June into JulyBlake, Amanda.2016
'Island Forest'LargeUnknownMed-LavenderJulyHatfield, Handy--NR--
'Island Forest Gem'LargeUnknownPale-LavenderJulyCarpenter, Kate & Walek, Kevin.2009
'Island Splendour'LargeHybrid-JuneBlake, Amanda.2016
'Island Velvet'MediumUnknown-July into AugustBlake, Amanda.2016
'Isle Royal'LargeHybridPale-LavenderJulyWilkins, Dr Jim.2000
'Issy'SmallUnknown--Woods, Doyle--NR--
'Iszat U Doc'MediumHybridLight-PurpleJuly into AugustBenedict, Dr Ralph (Herb) & Walek, Kevin.2009
'Iszat U Emmerson'SmallUnknown--Benedict, Dr Ralph (Herb)--NR--
'Ito Maru'SmallSportLight-PurpleSeptember to OctoberYamamoto--NR--
'Itsy Bitsy Spider'MiniatureHybridPale-LavenderJuly into AugustJohnson, Greg.2004
'Iwa Soules'LargeSportLight-PurpleAugust to SeptemberSoules, Marjorie & Walek, Kevin.2009
'Iwa Yara Moto'MediumUnknown--Benedict, Dr Ralph (Herb)--NR--
'Izumi'SmallHybrid-August to SeptemberUnknown--NR--
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