Cultivar NamePlant SizeLeaf ColorVariegationVar ColorOriginFlower ColorSeasonSourceRegistered
'Ralph's Legacy'SmallMed-GreenStreakedSpecklesUnknown-July into AugustZolock, Steve & Sarah.2000
'Rashao Iwa'MiniatureDark-Green--Unknown--Suzuki, Kichigoro--NR--
'Raspatini'MiniatureMed-Green--HybridLight-PurpleAugustZilis, Mark.2009
'Raspberry Sundae'SmallDark-GreenMedialWhiteUnknownPale-LavenderAugust to OctoberKorlipara, Harini & Gossett & Terra Nova Nurseries--NR--
'Ready'LargeDark-Green--UnknownMed-Lavender-Livingston, Ron--NR--
'Ready Eddy'SmallBlue/Green--Unknown--Benedict, Dr Ralph (Herb)--NR--
'Red Alert'SmallMed-GreenMedialWhiteHybridLight-PurpleJuly into AugustUnknown--NR--
'Red Bull'LargeMed-Green--Hybrid-July into AugustVan Eechaute, Danny.2010
'Red Cadet'MediumDark-Green--HybridPale-LavenderAugust to OctoberVan Eechaute, Danny.2005
'Red Cloud'SmallBlue/GreenStreakedWhiteHybrid--Beilstein, Doug--NR--
'Red Corvette'MediumMed-Green--HybridLight-PurpleAugust to SeptemberMoore, Jeff & Schwarz, Jim.2015
'Red Dog'MediumMed-Green--Unknown--Terpening, Kent--NR--
'Red Dragon'MediumLight-Green--HybridLight-PurpleAugustLivingston, Ron--NR--
'Red Eagle'----Hybrid--Moore, Jeff--NR--
'Red Feather'MediumDark-Green--Unknown--Benedict, Dr Ralph (Herb)--NR--
'Red Grande'MediumDark-Green--Unknown--Benedict, Dr Ralph (Herb)--NR--
'Red Grange'MediumBlue/Green--Unknown--Unknown--NR--
'Red Hots'-Yellow--Hybrid--Goodenough, Rick--NR--
'Red Imp'MediumMed-Green--HybridLight-Purple-Lydell, Ransom--NR--
'Red Kitty'SmallMed-Green--Unknown--Terpening, Kent--NR--
'Red Legged Plover'MediumYellow--Hybrid--Moore, Jeff--NR--
'Red Legs'LargeDark-Green--Hybrid-August to OctoberSugita, Hajime & Ruh, Peter.1998
'Red Light'MediumDark-Green--Unknown--Unknown--NR--
'Red Neck Heaven'MediumMed-Green--HybridPure-WhiteJuly into AugustAvent, Tony.1998
'Red October'MediumDark-Green--HybridLight-PurpleSeptember to OctoberHerold, Roy & Walek, Kevin.2009
'Red One'SmallDark-Green--Unknown--Westberg, Jim--NR--
'Red Puppy'MediumMed-Green--Unknown--Livingston, Ron--NR--
'Red Rampage'-Med-GreenStreakedWhiteUnknown--Lydell, Ransom--NR--
'Red Reject'MediumMed-Green--Unknown--Stegeman, Bev & Dave--NR--
'Red Riding Hood'MediumMed-Green--Unknown--Malloy, Alex--NR--
'Red River'SmallDark-Green--Hybrid--Malloy, Alex--NR--
'Red Rover'MediumMed-Green--HybridMed-LavenderAugust to SeptemberMoore, Jeff & Schwarz, Jim.2015
'Red Sox'MediumDark-Green--HybridLight-PurpleAugust to OctoberHerold, Roy & Walek, Kevin.2009
'Red Spatz'MediumDark-Green--Unknown--Summers, Alex--NR--
'Red Stem Green'MediumMed-Green--UnknownDeep-PurpleAugustWade, Van--NR--
'Red Stilts'LargeMed-Green--HybridPale-LavenderJune into JulyVan Eechaute, Danny.2011
'Red Thunder'MediumMed-Green--Hybrid--Beilstein, Doug & Malloy, Alex--NR--
'Red Wedding'----Unknown--Vasey, Mike--NR--
'Red Wine Fries'MediumBlue/Green--HybridMed-Lavender-Van Wyke, Trudy--NR--
'Redback Tavern'MediumMed-GreenMedialYellowHybrid--Wrede, Arthur--NR--
'Reddish Dot'MediumMed-Green--HybridDeep-PurpleJuly into AugustLiu, Donghuan.2016
'Reddy Eddy'LargeDark-Green--Unknown-August to SeptemberBenedict, Dr R. (Herb) & Dorothy & Kuenster, Rod.2010
'Redneck Mardi Gras'SmallYellow--UnknownDeep-PurpleAugust to SeptemberDuncan, Mary Jo.2016
'Redon Bleu'LargeBlue/Green--Unknown--Livingston, Ron--NR--
'Respighi'MediumMed-Green--Unknown--Unknown--NR--
'Rhubarb Pie'MediumMed-Green--Nat-SportPale-LavenderAugustJohnson, Irwin.2001
'Rock Happy'MediumMed-Green--HybridMed-LavenderAugustRuh, Peter.1992
'Rocket's Red Glare'MediumMed-Green--Unknown--Stegeman, Bev & Dave--NR--
'Rosedale Light My Fire'SmallYellow--Unknown--Hadrava, Jerry--NR--
'Royal Persuasion'SmallDark-Green--Unknown--King, Jim--NR--
'Royal Purple'LargeMed-Green--Hybrid--Wrede, Arthur--NR--
'Royal Regal Rhubarb'LargeMed-GreenMarginalWhiteNat-SportLight-PurpleJuly into AugustBenedict, Dr Ralph (Herb)--NR--
'Royal Rhubarb'LargeMed-Green--HybridLight-PurpleJuly into AugustRuh, Peter & Jean.2005
'Rubies and Ruffles'MediumDark-GreenMarginalWhiteUnknownMed-LavenderAugust to SeptemberGoodwin, Randy.2009
'Ruby'SmallMed-Green--HybridLight-PurpleAugust to SeptemberSavory, Dennis.2013
'Ruby Slippers'MediumMed-Green--HybridLight-PurpleSeptemberWard, Dr Dick & Jane.1999
'Ruby Tuesday'SmallMed-Green--Unknown--Herold, Roy--NR--
'Ruffed Up'LargeYellow--HybridPale-LavenderAugust to SeptemberCarlson, Monty & Julie.2009
'Run Around'MediumMed-Green--Unknown-July into AugustBenedict, Dr R. (Herb) & Dorothy & Kuenster, Rod.2010
'Rust Bucket'MediumYellow--Unknown--Goodenough, Rick--NR--
'Rusty Bee'MediumMed-Green--HybridLight-PurpleJulyMalloy, Alex.1998
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