Cultivar NamePlant SizeOriginFlower ColorSeasonSourceRegistered
'Radiant Light'MediumUnknown--Livingston, Ron--NR--
'Radio Waves'SmallHybridPale-LavenderAugustJohnson, Greg.2004
'Rain Forest'LargeHybridPale-LavenderAugust to OctoberGoodwin, Randy.1996
'Rainforest Shooting Stars'MediumSportNear-WhiteJulyOwens, William & Owens, Jean--NR--
'Rainmaker'GiantUnknown-June into JulyWard, Dr Dick & Ward, Jane.2009
'Raleigh Remembrance'MediumHybridMed-LavenderJulyZilis, Mark.2003
'Rasha'SmallSportPale-LavenderJulyUnknown--NR--
'Rashao Iwa'MiniatureUnknown--Suzuki, Kichigoro--NR--
'Raspatini'MiniatureHybridLight-PurpleAugustZilis, Mark.2009
'Raspberries and Cream'SmallTC SportLight-PurpleAugustZilis, Mark.2004
'Raspberry Beauty'MediumHybridLight-PurpleAugust to SeptemberDishon, Jim.1999
'Raspberry Parfait'LargeHybridLight-PurpleSeptemberRuh, Peter.1998
'Raspberry Sorbet'SmallHybridDeep-PurpleAugustZilis, Mark.1999
'Ratty'MediumUnknown-June into JulyGilligan, Madelon.2013
'Raven'MediumHybridLight-Purple-Savory, Robert.1993
'Rawhide'SmallUnknown--Unknown--NR--
'Razzle Dazzle'MediumHybridNear-WhiteJulyKuk, Bob.1987
'Ready'LargeUnknownMed-Lavender-Livingston, Ron--NR--
'Ready Freddy'GiantUnknownNear-WhiteJune into JulyAsch, Stuart.2010
'Red Baron'MediumHybridPale-Lavender-Cross, Peter.2001
'Red Bird'SmallUnknown--Unknown--NR--
'Red Bull'LargeHybrid-July into AugustVan Eechaute, Danny.2010
'Red Cadet'MediumHybridPale-LavenderAugust to OctoberVan Eechaute, Danny.2005
'Red Corvette'MediumHybridLight-PurpleAugust to SeptemberMoore, Jeff & Schwarz, Jim.2015
'Red Dog'MediumUnknown--Terpening, Kent--NR--
'Red Dragon'MediumHybridLight-PurpleAugustLivingston, Ron--NR--
'Red Dwarf'SmallUnknown--Unknown--NR--
'Red Feather'MediumUnknown--Benedict, Dr Ralph (Herb)--NR--
'Red Grande'MediumUnknown--Benedict, Dr Ralph (Herb)--NR--
'Red Hex'-Unknown-AugustUnknown--NR--
'Red Imp'MediumHybridLight-Purple-Lydell, Ransom--NR--
'Red Kitty'SmallUnknown--Terpening, Kent--NR--
'Red Legs'LargeHybrid-August to OctoberSugita, Hajime & Ruh, Peter.1998
'Red Light'MediumUnknown--Unknown--NR--
'Red Neck Heaven'MediumHybridPure-WhiteJuly into AugustAvent, Tony.1998
'Red October'MediumHybridLight-PurpleSeptember to OctoberHerold, Roy & Walek, Kevin.2009
'Red One'SmallUnknown--Westberg, Jim--NR--
'Red Puppy'MediumUnknown--Livingston, Ron--NR--
'Red Raven'SmallHybridLight-PurpleAugust to SeptemberMalloy, Alex--NR--
'Red Reject'MediumUnknown--Stegeman, Bev & Stegeman, Dave--NR--
'Red Riding Hood'MediumUnknown--Malloy, Alex--NR--
'Red River'SmallHybrid--Malloy, Alex--NR--
'Red Rover'MediumHybridMed-LavenderAugust to SeptemberMoore, Jeff & Schwarz, Jim.2015
'Red Sails in the Sunset'SmallHybridLight-PurpleAugustVan Ostrand, John.2004
'Red Salamander'SmallUnknown--Seaver, Mildred--NR--
'Red Slippers'MediumUnknown--Unknown--NR--
'Red Sox'MediumHybridLight-PurpleAugust to OctoberHerold, Roy & Walek, Kevin.2009
'Red Spatz'MediumUnknown--Summers, Alex--NR--
'Red Stem Green'MediumUnknownDeep-PurpleAugustWade, Van--NR--
'Red Stepper'MediumHybridLight-PurpleAugustGoodwin, Randy.1996
'Red Stilts'LargeHybridPale-LavenderJune into JulyVan Eechaute, Danny.2011
'Red Thunder'MediumHybrid--Beilstein, Doug & Malloy, Alex--NR--
'Red Tubes'SmallUnknownLight-Purple-Unknown--NR--
'Red Veins' (Pether)MediumHybrid--Pether, Glen--NR--
'Red Zeppelin'SmallUnknown--Unknown--NR--
'Redbud'MediumHybridMed-LavenderJune into JulyHicks, Gerry.2017
'Reddish Dot'MediumHybridDeep-PurpleJuly into AugustLiu, Donghuan.2016
'Reddy Eddy'LargeUnknown-August to SeptemberBenedict, Dr Ralph (Herb) & Kuenster, Rod.2010
'Redgo'LargeUnknown--Wade, Van--NR--
'Regal Glory' (Elslager)MediumHybridPale-LavenderJulyElslager, Ed.2001
'Regal Rhubarb'LargeUnknownLight-PurpleJuly into AugustSellers, Van.1983
'Regal Ruffles'GiantHybridNear-WhiteJune into JulyMinks, Eldren.1980
'Regal Tot'SmallHybridLight-PurpleJuly into AugustZilis, Mark.2010
'Renegade of Funk'LargeUnknown--White, Jeff--NR--
'Reptilian'LargeUnknownNear-WhiteJune into JulySawyer, Rick & The American Hosta Society.2019
'Respighi'MediumUnknown--Unknown--NR--
'Restless Sea'MediumHybridPale-LavenderAugust to OctoberHansen, Hans.2006
'Rhapsody in Blue'MediumHybridLight-PurpleAugust to OctoberBenedict, Dr Ralph (Herb).1996
'Rhubarb Pie'MediumSportPale-LavenderAugustJohnson, Irwin.2001
'Rich Uncle'LargeSportNear-WhiteJuneMalloy, Alex.2002
'Richard Taylor'LargeHybridPale-LavenderJune into JulySeaver, Mildred & Walek, Kevin.2009
'Richland Green Splish'LargeSportLight-PurpleJulyWade, Van.1999
'Richland Royal Purple'LargeSportDeep-PurpleJuly into AugustWade, Van.1999
'Richland Yea'LargeUnknown--Wade, Van--NR--
'Rickrack'MediumUnknownPale-LavenderJulyLachman, Wm & Lachman, Eleanor & Schmid, Tom.1999
'Riding High'GiantUnknown-June into JulyWard, Dr Dick & Ward, Jane.2014
'Rifle Ron'MediumUnknown--Schmidt, Bevie--NR--
'Rim Rock'SmallHybridLight-PurpleJulySavory, Robert.1982
'Ringtail'MediumHybridPale-LavenderAugust to OctoberTerpening, Kent.2005
'Rip Curl'MediumHybridPale-LavenderJuneLynch, P..2005
'Rip Off'MediumUnknownPale-Lavender-Benedict, Dr Ralph (Herb)--NR--
'Rippled Elf'MediumUnknown--Powell, Loteta & Walek, Kevin.2009
'Rippled Green Cup'MediumUnknown--Wade, Van--NR--
'Rippled Honey'LargeHybridLight-PurpleAugustBenedict, Dr Ralph (Herb) & Ruh, Peter.2006
'Rippled Treasure'MediumHybrid-June into JulyZilis, Mark.2010
'Rippling Rhythm'MediumHybridMed-LavenderJulySavory, Robert.1998
'Rippling Waters'LargeUnknown--Wade, Van--NR--
'Rippling Waves'GiantHybridPale-LavenderJune into JulyNesmith, Elizabeth & The American Hosta Society.1986
'Risa'SmallUnknownMed-LavenderJuly into AugustDupre, Dirk.2006
'Road Rage'MediumHybridDeep-PurpleAugustBeilstein, Doug.2018
'Robust Giant'LargeUnknown-June into JulyRuh, Peter & Ruh, Jean.2005
'Rock Baby'SmallUnknown--Aden, Paul--NR--
'Rock Girl'SmallUnknown--Schulte, Steve--NR--
'Rock Happy'MediumHybridMed-LavenderAugustRuh, Peter.1992
'Rock Master'MiniatureHybrid--Aden, Paul.1982
'Rock Princess' (Nakaiana)SmallUnknownLight-PurpleJuneUnknown--NR--
'Rocket's Red Glare'MediumHybrid--Stegeman, Bev & Stegeman, Dave--NR--
'Rocky Road'LargeHybridLight-PurpleJulySavory, Robert.1988
'Romaine'LargeUnknownPure-WhiteJuly into AugustSchwarz, Jim & Schwarz, Karen.2011
'Ron Livingston'MediumUnknownLight-PurpleAugustAsch, Stuart--NR--
'Rookie Mouse'MiniatureSportLight-PurpleJune into JulySzustakiewicz, Peter--NR--
'Ros Hogh'MediumUnknownMed-LavenderAugust to SeptemberKrossa, Gus & Mr Curtis--NR--
'Rosanne'SmallUnknown--O'Harra, Russ.1999
'Rosebud'LargeUnknown-JulySavory, Dennis.1992
'Rosedale Barnie'MediumHybridLight-PurpleJulyHadrava, Jerry.1999
'Rosedale Big Bopper'GiantHybridNear-WhiteJulyHadrava, Jerry.1999
'Rosedale Buddy Holly'LargeUnknownNear-WhiteJune into JulyHadrava, Jerry.1999
'Rosedale Dough Boy'LargeHybridPale-LavenderJune into JulyHadrava, Jerry.1999
'Rosedale Genevieve'LargeHybridPale-LavenderJulyHadrava, Jerry.1999
'Rosedale Golden City'LargeUnknownNear-WhiteJune into JulyHadrava, Jerry.1999
'Rosedale Little Puddle'MediumHybridLight-PurpleJulyHadrava, Jerry.2000
'Rosedale Mama Le Pew'MediumUnknownLight-Purple-Hadrava, Jerry--NR--
'Rosedale Mr. Green Jeans'LargeUnknown--Hadrava, Jerry--NR--
'Rosedale Mrs. President'LargeHybridNear-WhiteJulyHadrava, Jerry.1999
'Rosedale Papa Le Pew'MediumUnknownLight-Purple-Hadrava, Jerry--NR--
'Rosedale Pebbles'MediumHybridNear-WhiteJulyHadrava, Jerry.1999
'Rosedale Peppie Le Pew'LargeUnknownLight-Purple-Hadrava, Jerry--NR--
'Rosedale Rip Van Winkle'LargeHybridPale-LavenderJulyHadrava, Jerry.1999
'Rosedale Soup Bowl'LargeHybridLight-PurpleJulyHadrava, Jerry.2000
'Rosedale Stitched in Silk'MediumHybridLight-PurpleJulyHadrava, Jerry.1999
'Rosedale Terraced Hills'MediumHybridNear-WhiteJuneHadrava, Jerry.1999
'Rosemoor'SmallHybridLight-Purple-Palmer, Lady Anne--NR--
'Rostraver Heritage'LargeUnknownNear-WhiteJuly into AugustZolock, Steve & Zolock, Sarah.2009
'Roue de Fortune'SmallUnknown--Bastille, Jocelyne--NR--
'Roulette Russe'MediumUnknownPale-LavenderSeptemberBastille, Jocelyne--NR--
'Round Around'SmallUnknown--Benedict, Dr Ralph (Herb)--NR--
'Round Midnight'LargeUnknown--Unknown--NR--
'Roxsanne'LargeSportMed-LavenderJulyHeemskerk, Gerardus.2005
'Royal Crest'LargeHybridPure-WhiteAugust to SeptemberHansen, Hans & Walters Gardens.2018
'Royal Lady'LargeUnknown-August to SeptemberHolly, Gladys & The American Hosta Society.1986
'Royal Oyster'MediumSportPure-WhiteAugustSummers, Alex--NR--
'Royal Persuasion'SmallUnknown--King, Jim--NR--
'Royal Purple'LargeHybrid--Wrede, Arthur--NR--
'Royal Rhubarb'LargeHybridLight-PurpleJuly into AugustRuh, Peter & Ruh, Jean.2005
'Royal Scepter'SmallSportMed-LavenderJulyUnknown--NR--
'Royal Standard'LargeHybridPure-WhiteAugust to OctoberGrullemans, John J. & Wayside Gardens.1986
'Royal Standard Double'LargeSportPure-WhiteAugust to SeptemberReinermann, Werner--NR--
'Roy's Pink'SmallHybridLight-PurpleAugustBenedict, Dr Ralph (Herb) & Walek, Kevin.2009
'Rubber Ducky'MediumUnknownPale-LavenderJuly into AugustSchwarz, Jim.1996
'Rubies'-Unknown--Lydell, Ransom--NR--
'Ruby'SmallHybridLight-PurpleAugust to SeptemberSavory, Dennis.2013
'Ruby Slippers'MediumHybridLight-PurpleSeptemberWard, Dr Dick & Ward, Jane.1999
'Ruby Tuesday'SmallUnknown--Herold, Roy--NR--
'Rudolph's #1'LargeUnknown--Rudolph, Thelma--NR--
'Ruffian' (Asch)MediumSportPale-LavenderJulyAsch, Stuart.2009
'Ruffled Pale Face'SmallUnknown-July into AugustSchulz, Ed.2002
'Ruffled Petticoats'LargeHybridPale-LavenderJulyDiesen, Bernie & Diesen, Jane.1998
'Ruffles'MediumUnknownPale-Lavender-Lehman, Dick & The American Hosta Society.1986
'Rumpelstilzchen'SmallUnknown--Kohlein, Fritz--NR--
'Rumpled Hat'GiantUnknown--Ruff, Doug--NR--
'Rumpled Sheets'LargeUnknown--Meyer, Bill--NR--
'Runaround'MediumUnknown-July into AugustBenedict, Dr Ralph (Herb) & Kuenster, Rod.2010
'Russ O'Harra'GiantHybridNear-WhiteJuly into AugustO'Harra, Russ.1999
'Rusty Bee'MediumHybridLight-PurpleJulyMalloy, Alex.1998
'Rusty's Apple Pie'LargeUnknown--Rouillier, Denis--NR--
'Rusty's Blue Star'MiniatureUnknown--Rouillier, Denis--NR--
'Rusty's Glimmer'SmallUnknown--Rouillier, Denis--NR--
'Rusty's Steroids'LargeUnknown--Rouillier, Denis--NR--
'Rusty's Tornado'MediumUnknown--Rouillier, Denis--NR--
'Ruth Reed Mraz'LargeUnknownNear-WhiteJuly into AugustDow, Ronald & Mraz, Arthur.2012
'Rutherford Birchard Hayes'MediumUnknownMed-Lavender-Ruh, Peter & Ruh, Jean.2010
'Ruth's Green Edger'MediumUnknown--Unknown--NR--
'You're So Vein'SmallUnknownMed-LavenderJuly into AugustAvent, Tony.2012
'You're Welcome'LargeSportLight-PurpleJuly into AugustMicheletti, Tom.2011
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