Cultivar NameSourcePlant SizeLeaf ColorVariegationVar ColorOriginFlower ColorSeasonRegistered
'Rachel'Kuk, BobLargeDark-GreenMarginalYellowHybridDeep-PurpleJuly into August.2005
'Ragtime'Ward, Dr Dick & JaneLargeYellow--HybridPale-LavenderJune into July.2013
'Rainmaker'Ward, Dr Dick & JaneGiantMed-Green--Unknown-June into July.2009
'Rainy Day'Ward, Dr Dick & JaneMediumMed-GreenMedialWhiteHybridPale-LavenderJune into July.2014
'Raspberry Parfait'Ruh, PeterLargeMed-Green--HybridLight-PurpleSeptember.1998
'Razzle Dazzle'Kuk, BobMediumDark-Green--HybridNear-WhiteJuly.1987
'Razzmatazz'Beilstein, Doug & MardyMediumMed-GreenMarginalWhiteNat-SportPale-LavenderJuly into August.2013
'Red Cloud'Beilstein, DougSmallBlue/GreenStreakedWhiteHybrid----NR--
'Red Stem Green'Wade, VanMediumMed-Green--UnknownDeep-PurpleAugust--NR--
'Red Thunder'Beilstein, Doug & Malloy, AlexMediumMed-Green--Hybrid----NR--
'Red Wedding'Vasey, Mike----Unknown----NR--
'Redgo'Wade, VanLargeLight-Green--Unknown----NR--
'Rembrandt Blue'Moldovan, SteveLargeBlue/Green--HybridNear-WhiteJune into July.1983
'Rhapsody'Hatfield, Handy & Walek, KevinLargeMed-GreenMarginalWhiteNat-SportPale-LavenderJuly.2009
'Richland Blue'Wade, VanLargeBlue/Green--UnknownNear-WhiteJune into July.2007
'Richland Charmer'Wade, VanLargeMed-GreenMedialYellowNat-SportLight-PurpleJuly.2000
'Richland Clear Fork Mist'Wade, VanMediumMed-GreenMarginalYellowUnknownPale-LavenderJuly into August--NR--
'Richland Gold'Wade, VanMediumYellow--Nat-SportPale-LavenderJuly into August.1987
'Richland Gold Splash'Wade, Van & Walek, KevinMediumYellowStreakedSpecklesNat-SportMed-LavenderJuly into August.2009
'Richland Golden Candy'Wade, VanMediumYellow--UnknownLight-PurpleJuly--NR--
'Richland Gold's Moonlight'Wade, VanMediumMed-GreenMarginalWhiteNat-SportPale-LavenderJuly into August.1999
'Richland Gold's Moonlight's Child'Wade, VanMediumMed-GreenMedialWhiteNat-SportMed-LavenderJuly into August--NR--
'Richland Green Edge'Wade, VanLargeBlue/GreenStreakedYellowUnknown----NR--
'Richland Green Splish'Wade, VanLargeDark-Green--Nat-SportLight-PurpleJuly.1999
'Richland Mayan Moon'Wade, VanMediumDark-GreenMarginalYellowNat-SportPale-LavenderJuly--NR--
'Richland Neat Tot'Wade, VanLargeMed-GreenStreakedWhiteUnknownLight-PurpleAugust--NR--
'Richland Royal Prince'Wade, VanSmallMed-GreenMedialWhiteHybridLight-PurpleJuly into August--NR--
'Richland Royal Princess'Wade, VanLargeMed-GreenMarginalWhiteNat-SportLight-PurpleJuly.1999
'Richland Royal Purple'Wade, VanLargeMed-Green--Nat-SportDeep-PurpleJuly into August.1999
'Richland Silver'Wade, VanMediumLight-GreenMarginalWhiteUnknown----NR--
'Richland Surprise'Wade, VanMediumMed-GreenMarginalCreamy WhiteNat-SportLight-PurpleJuly.1999
'Richland Surprise Splash'Wade, VanMediumMed-GreenStreakedYellowUnknown----NR--
'Richland White Edge'Wade, VanMediumMed-GreenMarginalYellowUnknownLight-PurpleJuly.1999
'Richland Yea'Wade, VanLargeMed-Green--Unknown----NR--
'Richmond Blue'Zumbar, Wm & Walek, KevinLargeBlue/Green--TC SportNear-WhiteJune into July.2009
'Riding High'Ward, Dr Dick & JaneGiantDark-Green--Unknown-June into July.2014
'Rippled Green Cup'Wade, VanMediumDark-Green--Unknown----NR--
'Rippled Streak'Wade, vanLargeMed-GreenStreakedSpecklesUnknownMed-Lavender---NR--
'Rippling Waters'Wade, VanLargeMed-Green--Unknown----NR--
'Rising Surf'Ruh, PeterMediumMed-GreenMarginalWhiteUnknownPale-LavenderJuly--NR--
'River Nile'Moldovan, SteveGiantBlue/Green--HybridNear-WhiteJune into July.1983
'River of Gold'Ward, Dr Dick & JaneLargeYellow--Unknown-June into July.2014
'Road Rage'Beilstein, DougMediumMed-Green--HybridDeep-PurpleAugust.2018
'Robust Giant'Ruh, Peter & JeanLargeLight-Green--Unknown-June into July.2005
'Rock and Roll'Kuk, BobLargeBlue/Green--UnknownNear-WhiteJune.1999
'Rock Happy'Ruh, PeterMediumMed-Green--HybridMed-LavenderAugust.1992
'Rock of Ages'Ward, Dr Dick & JaneGiantBlue/Green--Nat-SportPure-WhiteJune into July.2009
'Rock Star Land'Stadden, JoshMediumBlue/Green--Hybrid----NR--
'Rocknoll Blue Dwarf'Saur, B. & Ruh, PeterMiniatureBlue/Green--Unknown-August.1996
'Rocky Fork'Ward, Dr Dick & JaneMediumBlue/Green--UnknownPale-LavenderJune into July.2003
'Rocky Mountain High'Kuk, BobLargeMed-GreenMarginalYellowHybridPale-LavenderJune into July.1991
'Roscoe'Wade, VanGiantBlue/Green--HybridNear-WhiteJune.1999
'Rotini'Beilstein, Doug & Zilis, MarkLargeBlue/GreenStreakedYellowHybrid-June into July.2009
'Rough Knight'Beilstein, Doug & MardySmallBlue/Green--HybridMed-LavenderAugust.2013
'Rough Rider'Beilstein, DougMediumBlue/Green--Unknown----NR--
'Roughrider'Graves, ButchMediumMed-GreenMarginalWhiteHybridPure-WhiteAugust to September.2008
'Rowan My Boat'Beilstein, Doug & MardyLargeBlue/Green--HybridMed-LavenderJune into July.2018
'Royal Accolade'Zumbar, WmMediumLight-GreenMarginalGreenNat-SportPure-WhiteAugust.1986
'Royal Diadem'Zumbar, Wm & Zilis, MarkLargeMed-GreenMarginalWhiteNat-SportPure-WhiteAugust to October--NR--
'Royal Gold'Wayside GardensLargeYellow--TC SportPure-WhiteAugust to October--NR--
'Royal Rhubarb'Ruh, Peter & JeanLargeMed-Green--HybridLight-PurpleJuly into August.2005
'Royal Rim'Zumbar, Wm & Zilis, MarkLargeMed-GreenMarginalWhiteNat-SportPure-WhiteAugust to October--NR--
'Royal Splash'Grullemans, John J. & Wayside GardensLargeMed-GreenStreakedWhiteTC SportPure-WhiteAugust--NR--
'Royal Standard'Grullemans, John J. & Wayside GardensLargeMed-Green--HybridPure-WhiteAugust to October.1986
'Royal Standard Special'Grullemans, John J. & Wayside GardensLargeMed-GreenMarginalYellowTC SportPure-WhiteAugust to October--NR--
'Ruby Desires'Klotz, RubyMediumDark-GreenMarginalYellowUnknown----NR--
'Ruby Slippers'Ward, Dr Dick & JaneMediumMed-Green--HybridLight-PurpleSeptember.1999
'Rutherford Birchard Hayes'Ruh, Peter & JeanMediumLight-Green--UnknownMed-Lavender-.2010

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