| Medium Size Hostas | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
| 'Racing Stripes' | Blue/Green | Streaked | Yellow | Hybrid | Pale-Lavender | July | Elslager, Ed | .2005 |
| 'Radiant Light' | Light-Green | | - | Unknown | - | - | Livingston, Ron | --NR-- |
| 'Rain Forest Shooting Stars' | Dark-Green | Medial | Yellow | Nat-Sport | Med-Lavender | July into August | Owens, William & Jean | .2008 |
| 'Rainbow Falls' | Med-Green | Streaked | White | Hybrid | Pale-Lavender | July | Elslager, Ed | .2001 |
| 'Rainbow Glenn' | Light-Green | Streaked | White | Hybrid | Pale-Lavender | July | Kuenster, Rod | .2005 |
| 'Rainbow's Sun Power' | Yellow | Marginal | White | Nat-Sport | Pale-Lavender | July | Hale, Dennis | --NR-- |
| 'Raindance' | Med-Green | Medial | Yellow | TC Sport | Pale-Lavender | July | Walters Gardens | --NR-- |
| 'Rainforest Shooting Stars' | Dark-Green | | - | Nat-Sport | Near-White | July | Owens, William & Jean | --NR-- |
| 'Rainforest Sunrise' | Yellow | Marginal | Green | TC Sport | Near-White | July | Anderson, Jim | .2003 |
| 'Rainy Day' | Med-Green | Medial | White | Hybrid | Pale-Lavender | June into July | Ward, Dr Dick & Jane | .2014 |
| 'Raleigh Remembrance' | Med-Green | | - | Hybrid | Med-Lavender | July | Zilis, Mark | .2003 |
| 'Rare Breed' | Med-Green | Medial | White | Unknown | Pale-Lavender | - | Livingston, Ron | --NR-- |
| 'Raspberry Beauty' | Light-Green | | - | Hybrid | Light-Purple | August to September | Dishon, Jim | .1999 |
| 'Ratty' | Med-Green | | - | Unknown | - | June into July | Gilligan, Madelon | .2013 |
| 'Raucous Ruffles' | Blue/Green | | - | Hybrid | - | - | Dean, Don | .2008 |
| 'Raven' | Dark-Green | | - | Hybrid | Light-Purple | - | Savory, Robert | .1993 |
| 'Rays of Sunshine' | Med-Green | Marginal | Yellow | Nat-Sport | Pale-Lavender | July | Minks, Edren | .1990 |
| 'Razzle Dazzle' | Dark-Green | | - | Hybrid | Near-White | July | Kuk, Bob | .1987 |
| 'Razzmatazz' | Med-Green | Marginal | White | Nat-Sport | Pale-Lavender | July into August | Beilstein, Doug & Mardy | .2013 |
| 'Rebel Heart' | Blue/Green | Marginal | Yellow | Hybrid | - | - | Wasitis, Chick | --NR-- |
| 'Rebel Rouser' | Yellow | | - | Hybrid | Near-White | July | Wasitis, Chick | --NR-- |
| 'Red Baron' | Med-Green | | - | Hybrid | Pale-Lavender | - | Cross, Peter | .2001 |
| 'Red Cadet' | Dark-Green | | - | Hybrid | Pale-Lavender | August to October | Van Eechaute, Danny | .2005 |
| 'Red Corvette' | Med-Green | | - | Hybrid | Light-Purple | August to September | Moore, Jeff & Schwarz, Jim | .2015 |
| 'Red Dog' | Med-Green | | - | Unknown | - | - | Terpening, Kent | --NR-- |
| 'Red Dragon' | Light-Green | | - | Hybrid | Light-Purple | August | Livingston, Ron | --NR-- |
| 'Red Feather' | Dark-Green | | - | Unknown | - | - | Benedict, Dr Ralph (Herb) | --NR-- |
| 'Red Grande' | Dark-Green | | - | Unknown | - | - | Benedict, Dr Ralph (Herb) | --NR-- |
| 'Red Grange' | Blue/Green | | - | Unknown | - | - | Unknown | --NR-- |
| 'Red Imp' | Med-Green | | - | Hybrid | Light-Purple | - | Lydell, Ransom | --NR-- |
| 'Red Legged Plover' | Yellow | | - | Hybrid | - | - | Moore, Jeff | --NR-- |
| 'Red Light' | Dark-Green | | - | Unknown | - | - | Unknown | --NR-- |
| 'Red Neck Heaven' | Med-Green | | - | Hybrid | Pure-White | July into August | Avent, Tony | .1998 |
| 'Red October' | Dark-Green | | - | Hybrid | Light-Purple | September to October | Herold, Roy & Walek, Kevin | .2009 |
| 'Red Puppy' | Med-Green | | - | Unknown | - | - | Livingston, Ron | --NR-- |
| 'Red Reject' | Med-Green | | - | Unknown | - | - | Stegeman, Bev & Dave | --NR-- |
| 'Red Riding Hood' | Med-Green | | - | Unknown | - | - | Malloy, Alex | --NR-- |
| 'Red Rover' | Med-Green | | - | Hybrid | Med-Lavender | August to September | Moore, Jeff & Schwarz, Jim | .2015 |
| 'Red Slippers' | Med-Green | | - | Unknown | - | - | Unknown | --NR-- |
| 'Red Socks' | Med-Green | Medial | Yellow | Unknown | - | - | Goodwin, Randy | --NR-- |
| 'Red Sox' | Dark-Green | | - | Hybrid | Light-Purple | August to October | Herold, Roy & Walek, Kevin | .2009 |
| 'Red Spatz' | Dark-Green | | - | Unknown | - | - | Summers, Alex | --NR-- |
| 'Red Stem Green' | Med-Green | | - | Unknown | Deep-Purple | August | Wade, Van | --NR-- |
| 'Red Stepper' | Med-Green | | - | Hybrid | Light-Purple | August | Goodwin, Randy | .1996 |
| 'Red Thunder' | Med-Green | | - | Hybrid | - | - | Beilstein, Doug & Malloy, Alex | --NR-- |
| 'Red Veins' | Med-Green | | - | Hybrid | - | - | Pether, Glen | --NR-- |
| 'Red Wine Fries' | Blue/Green | | - | Hybrid | Med-Lavender | - | Van Wyke, Trudy | --NR-- |
| 'Red Wing' | Light-Green | Marginal | Dark Green | Hybrid | Light-Purple | August | Benedict, Dr R. (Herb) & Walek, Kevin | .2009 |
| 'Redback Tavern' | Med-Green | Medial | Yellow | Hybrid | - | - | Wrede, Arthur | --NR-- |
| 'Redbud' | Med-Green | | - | Hybrid | Med-Lavender | June into July | Hicks, Gerry | .2017 |
| 'Reddish Dot' | Med-Green | | - | Hybrid | Deep-Purple | July into August | Liu, Donghuan | .2016 |
| 'Reflecting Pool' | Med-Green | Medial | Yellow | Unknown | - | - | Meyer, Bill | --NR-- |
| 'Reflections' | Dark-Green | Marginal | White | Unknown | - | June into July | Goodwin, Randy | .2005 |
| 'Regal Glory' | Med-Green | | - | Hybrid | Pale-Lavender | July | Elslager, Ed | .2001 |
| 'Regal Twist' | Blue/Green | Medial | White | Nat-Sport | Med-Lavender | July into August | Schulte, Dave & Don | .2007 |
| 'Reggie Rising' | Light-Green | Streaked | White | Unknown | - | - | Unknown | --NR-- |
| 'Reginald Kaye' | Blue/Green | | - | Unknown | Near-White | August | Ruh, Peter & Jean | .2003 |
| 'Reiho Nishiki' | Med-Green | Medial | Yellow | Nat-Sport | Pale-Lavender | July | Watanabe, Kenji | --NR-- |
| 'Reiko' | Blue/Green | Streaked | Speckles | Unknown | - | - | Watanabe, Kenji | --NR-- |
| 'Remember Me' | Blue/Green | Medial | Creamy White | Hybrid | Pale-Lavender | July | Van Erven, D., Van Eijk-Bos, G. & Walters Gardens | .2001 |
| 'Remembrance' | Blue/Green | Marginal | Yellow | Hybrid | - | June into July | Skaggs, Virginia & Brian & Gilligan, Madelon | .2015 |
| 'Renaissance' | Med-Green | Streaked | Speckles | Nat-Sport | Pale-Lavender | July | Minks, Eldren | .1983 |
| 'Rendezvous' | Blue/Green | Marginal | White | Nat-Sport | Pale-Lavender | July into August | Zilis, Mark & Schwarz, Jim | .2014 |
| 'Renegade' | Med-Green | Marginal | White | Unknown | - | - | Asch, Stuart | --NR-- |
| 'Respighi' | Med-Green | | - | Unknown | - | - | Unknown | --NR-- |
| 'Restless Sea' | Med-Green | | - | Hybrid | Pale-Lavender | August to October | Hansen, Hans | .2006 |
| 'Reverend Mac' | Blue/Green | | - | Nat-Sport | Pale-Lavender | July into August | Van Eechaute, Danny | .2011 |
| 'Reverie' | Med-Green | Medial | Creamy White | Hybrid | Pure-White | August | Wilkins, Dr Jim & Sandy | .2003 |
| 'Reversed' | Blue/Green | Medial | Greenish White | Unknown | Pale-Lavender | July | Aden, Paul | .1978 |
| 'Revolution' | Med-Green | Medial | Creamy White | Nat-Sport | Pale-Lavender | July | Van Eijk-Bos, Gert & Walters Gardens | .2000 |
| 'Reward of Virtue' | Med-Green | Marginal | White | Unknown | - | - | Malloy, Alex | --NR-- |
| 'Rhapsody in Blue' | Dark-Green | | - | Hybrid | Light-Purple | August to October | Benedict, Dr Ralph (Herb) | .1996 |
| 'Rhein' | Blue/Green | | - | Unknown | Pale-Lavender | August | Klose, Heinz & Ruh, Peter & Jean | .2003 |
| 'Rheingold' | Yellow | Marginal | Green | Unknown | - | - | Kohlein, Fritz | --NR-- |
| 'Rhinestone Cowboy' | Med-Green | Marginal | Creamy White | Hybrid | Pale-Lavender | July | Elslager, Ed | .2000 |
| 'Rhinestone Cowboy Supreme' | Light-Green | Streaked | Yellow | Nat-Sport | Pale-Lavender | July | Elslager, Ed & Schwarz, Jim | --NR-- |
| 'Rhino' | Med-Green | Marginal | White | Nat-Sport | Pale-Lavender | August to September | Goodwin, Randy | .2000 |
| 'Rhino Gold' | Yellow | | - | Nat-Sport | Near-White | June into July | Rawson, Don | --NR-- |
| 'Rhino Hide' | Blue/Green | Medial | Yellow | Unknown | Near-White | June into July | Rawson, Don | .2007 |
| 'Rhino Tuff' | Blue/Green | | - | Nat-Sport | Near-White | June into July | Rawson, Don | --NR-- |
| 'Rhubarb Pie' | Med-Green | | - | Nat-Sport | Pale-Lavender | August | Johnson, Irwin | .2001 |
| 'Ribbon Candy' | Light-Green | Streaked | White | Unknown | - | - | Minks, Eldren & Nancy & Walek, Kevin | .2009 |
| 'Richland Clear Fork Mist' | Med-Green | Marginal | Yellow | Unknown | Pale-Lavender | July into August | Wade, Van | --NR-- |
| 'Richland Gold' | Yellow | | - | Nat-Sport | Pale-Lavender | July into August | Wade, Van | .1987 |
| 'Richland Gold Splash' | Yellow | Streaked | Speckles | Nat-Sport | Med-Lavender | July into August | Wade, Van & Walek, Kevin | .2009 |
| 'Richland Golden Candy' | Yellow | | - | Unknown | Light-Purple | July | Wade, Van | --NR-- |
| 'Richland Gold's Moonlight' | Med-Green | Marginal | White | Nat-Sport | Pale-Lavender | July into August | Wade, Van | .1999 |
| 'Richland Gold's Moonlight's Child' | Med-Green | Medial | White | Nat-Sport | Med-Lavender | July into August | Wade, Van | --NR-- |
| 'Richland Mayan Moon' | Dark-Green | Marginal | Yellow | Nat-Sport | Pale-Lavender | July | Wade, Van | --NR-- |
| 'Richland Reward' | Yellow | Marginal | White | TC Sport | Pale-Lavender | July into August | Schulz, Ed | .2014 |
| 'Richland Riot' | Yellow | Marginal | Yellow | Nat-Sport | Pale-Lavender | July into August | Schulz, Ed | --NR-- |
| 'Richland Silver' | Light-Green | Marginal | White | Unknown | - | - | Wade, Van | --NR-- |
| 'Richland Surprise' | Med-Green | Marginal | Creamy White | Nat-Sport | Light-Purple | July | Wade, Van | .1999 |
| 'Richland Surprise Splash' | Med-Green | Streaked | Yellow | Unknown | - | - | Wade, Van | --NR-- |
| 'Richland White Edge' | Med-Green | Marginal | Yellow | Unknown | Light-Purple | July | Wade, Van | .1999 |
| 'Richmond' | Med-Green | Marginal | Yellow | Hybrid | Pale-Lavender | July | Seaver, Mildred | .2004 |
| 'Richmond Splashed' | Light-Green | Streaked | Yellow | Nat-Sport | - | - | Elslager, Ed | --NR-- |
| 'Rickrack' | Med-Green | | - | Unknown | Pale-Lavender | July | Lachman, Wm & Eleanor & Schmid, Tom | .1999 |
| 'Rifle Ron' | Dark-Green | | - | Unknown | - | - | Schmidt, Bevie | --NR-- |
| 'Right Around Morning Sunrise' | Med-Green | Streaked | Yellow | Nat-Sport | Pale-Lavender | July into August | McHugh, Ed | .2009 |
| 'Righteous Rays' | Yellow | | - | Hybrid | Med-Lavender | August | Snyder, Ron | .2003 |
| 'Rikyu' | Med-Green | Medial | Yellow | Unknown | - | - | Fukatsu, Shinya | --NR-- |
| 'Ring of Fire' | Dark-Green | Marginal | Yellow | Hybrid | Pale-Lavender | June into July | Elslager, Ed | .1999 |
| 'Ringtail' | Dark-Green | | - | Hybrid | Pale-Lavender | August to October | Terpening, Kent | .2005 |
| 'Rip Curl' | Med-Green | | - | Hybrid | Pale-Lavender | June | Lynch, P. | .2005 |
| 'Rip Off' | Light-Green | | - | Unknown | Pale-Lavender | - | Benedict, Dr R. (Herb) | --NR-- |
| 'Rippled Elf' | Med-Green | | - | Unknown | - | - | Powell, Loteta & Walek, Kevin | .2009 |
| 'Rippled Green Cup' | Dark-Green | | - | Unknown | - | - | Wade, Van | --NR-- |
| 'Rippled Treasure' | Med-Green | | - | Hybrid | - | June into July | Zilis, Mark | .2010 |
| 'Rippling Rhythm' | Med-Green | | - | Hybrid | Med-Lavender | July | Savory, Robert | .1998 |
| 'Rippling Vanilla' | Yellow | | - | Nat-Sport | Med-Lavender | July | Minks, Eldren | --NR-- |
| 'Riptide' | Blue/Green | | - | Unknown | Pale-Lavender | August | Sellers, Van | .1987 |
| 'Rising Star' | Yellow | Marginal | Pale Yellow | Nat-Sport | Med-Lavender | July into August | Mortko, Rob | .2013 |
| 'Rising Surf' | Med-Green | Marginal | White | Unknown | Pale-Lavender | July | Ruh, Peter | --NR-- |
| 'River's Mist' | Dark-Green | Medial | White | Unknown | - | - | Unknown | --NR-- |
| 'Road Rage' | Med-Green | | - | Hybrid | Deep-Purple | August | Beilstein, Doug | .2018 |
| 'Road Runner' | Med-Green | Marginal | Yellow | Unknown | - | - | Unknown | --NR-- |
| 'Robert's Rapier' | Dark-Green | Medial | White | Nat-Sport | Pale-Lavender | July into August | Keller, Robert | .1996 |
| 'Robin of Loxley' | Blue/Green | | - | Unknown | Near-White | June into July | Schwarz, Jim | --NR-- |
| 'Robyn Duback' | Med-Green | Marginal | Yellow | Unknown | Med-Lavender | August to September | Benedict, Dr R. (Herb) & Dorothy & Kuenster, Rod | .2010 |
| 'Robyn's Choice' | Blue/Green | Marginal | Yellow | Nat-Sport | Med-Lavender | July into August | Thomas, Bryan | --NR-- |
| 'Rock Happy' | Med-Green | | - | Hybrid | Med-Lavender | August | Ruh, Peter | .1992 |
| 'Rock Star Land' | Blue/Green | | - | Hybrid | - | - | Stadden, Josh | --NR-- |
| 'Rocket's Red Glare' | Med-Green | | - | Unknown | - | - | Stegeman, Bev & Dave | --NR-- |
| 'Rocky Fork' | Blue/Green | | - | Unknown | Pale-Lavender | June into July | Ward, Dr Dick & Jane | .2003 |
| 'Rocky Point' | Yellow | | - | Unknown | - | - | Goodenough, Rick | --NR-- |
| 'Rod's Gold' | Yellow | | - | Hybrid | Pale-Lavender | June into July | Kuenster, Rod | .2004 |
| 'Rohdeifolia' | Dark-Green | Marginal | White | Unknown | Light-Purple | August | Unknown | --NR-- |
| 'Ron Damant' | Blue/Green | Marginal | Yellow | Nat-Sport | Pale-Lavender | July | Ford, Richard & Mary | .2004 |
| 'Ron Livingston' | Light-Green | | - | Unknown | Light-Purple | August | Asch, Stuart | --NR-- |
| 'Roostertail' | Med-Green | Streaked | White | Hybrid | Near-White | July | Elslager, Ed | .2002 |
| 'Rootin Tootin' | Blue/Green | Medial | Creamy White | Nat-Sport | Light-Purple | July | Ziarek, Ken | --NR-- |
| 'Ros Hogh' | Med-Green | | - | Unknown | Med-Lavender | August to September | Krossa, Gus & Mr Curtis | --NR-- |
| 'Rosedale Barnie' | Dark-Green | | - | Hybrid | Light-Purple | July | Hadrava, Jerry | .1999 |
| 'Rosedale Blend Master' | Blue/Green | Streaked | Yellow | Unknown | Pale-Lavender | July into August | Hadrava, Jerry | .2000 |
| 'Rosedale Blunder Bus' | Dark-Green | Streaked | Yellow | Hybrid | Pale-Lavender | July | Hadrava, Jerry | .2000 |
| 'Rosedale Butter Rum' | Blue/Green | Streaked | Yellow | Hybrid | Light-Purple | July | Hadrava, Jerry | .1999 |
| 'Rosedale Coalminer's Special' | Med-Green | Streaked | Speckles | Unknown | Light-Purple | July | Hadrava, Jerry | --NR-- |
| 'Rosedale Daisy Mae' | Med-Green | Streaked | Yellow | Unknown | Pale-Lavender | July | Hadrava, Jerry | .1999 |
| 'Rosedale Dewy' | Blue/Green | | - | Hybrid | Near-White | June into July | Hadrava, Jerry | .1999 |
| 'Rosedale Elizabeth Stratton' | Yellow | | - | Hybrid | Pure-White | - | Hadrava, Jerry | .1999 |
| 'Rosedale Frosted Malt' | Light-Green | Streaked | White | Hybrid | - | - | Hadrava, Jerry | .1999 |
| 'Rosedale Golden Cup' | Yellow | Marginal | White | Unknown | - | - | Hadrava, Jerry | --NR-- |
| 'Rosedale Golden Egg' | Yellow | | - | Hybrid | Near-White | - | Hadrava, Jerry | .1999 |
| 'Rosedale Golden Lining' | Yellow | | - | Hybrid | - | - | Hadrava, Jerry | .1999 |
| 'Rosedale Golden Star' | Light-Green | Marginal | White | Unknown | - | - | Hadrava, Jerry | --NR-- |
| 'Rosedale Golden Trout' | Yellow | | - | Hybrid | Near-White | July | Hadrava, Jerry | .1999 |
| 'Rosedale Golden Trumpet' | Yellow | | - | Unknown | - | - | Hadrava, Jerry | --NR-- |
| 'Rosedale Grant Wood' | Med-Green | Marginal | White | Hybrid | Pale-Lavender | July | Hadrava, Jerry | .2000 |
| 'Rosedale High Flyer' | Dark-Green | Streaked | White | Hybrid | - | - | Hadrava, Jerry | .1999 |
| 'Rosedale Houdini' | Med-Green | Streaked | Yellow | Hybrid | Light-Purple | July into August | Hadrava, Jerry | .2000 |
| 'Rosedale Jack of Hearts' | Dark-Green | Streaked | Yellow | Hybrid | Med-Lavender | July | Hadrava, Jerry | .2000 |
| 'Rosedale Jack of Spades' | Med-Green | Streaked | Yellow | Hybrid | Med-Lavender | July into August | Hadrava, Jerry | .2000 |
| 'Rosedale John Stratton' | Blue/Green | | - | Hybrid | - | - | Hadrava, Jerry | .1999 |
| 'Rosedale Leaping Lizards' | Dark-Green | Marginal | Yellow | Hybrid | Light-Purple | July | Hadrava, Jerry | .2000 |
| 'Rosedale Little Puddle' | Dark-Green | | - | Hybrid | Light-Purple | July | Hadrava, Jerry | .2000 |
| 'Rosedale Loving Lady' | Med-Green | Marginal | Yellow | Unknown | - | - | Hadrava, Jerry | --NR-- |
| 'Rosedale Lucky Charm' | Blue/Green | Marginal | Yellow | Unknown | Pale-Lavender | July | Hadrava, Jerry | --NR-- |
| 'Rosedale Mama Le Pew' | Med-Green | | - | Unknown | Light-Purple | - | Hadrava, Jerry | --NR-- |
| 'Rosedale Marbled Swirl' | Med-Green | Streaked | Speckles | Hybrid | Near-White | July | Hadrava, Jerry | .1999 |
| 'Rosedale Melody of Summer' | Dark-Green | Medial | White | Nat-Sport | Med-Lavender | July | Hadrava, Jerry | --NR-- |
| 'Rosedale Moonshine Delight' | Med-Green | Marginal | Yellow | Unknown | Near-White | June into July | Hadrava, Jerry | .1999 |
| 'Rosedale My Love' | Med-Green | Marginal | White | Hybrid | - | - | Hadrava, Jerry | .1999 |
| 'Rosedale Old Maid' | Dark-Green | Streaked | White | Hybrid | Pale-Lavender | July | Hadrava, Jerry | .2000 |
| 'Rosedale Oriole' | Med-Green | Streaked | Yellow | Hybrid | Med-Lavender | July | Hadrava, Jerry | .2000 |
| 'Rosedale Papa Le Pew' | Med-Green | | - | Unknown | Light-Purple | - | Hadrava, Jerry | --NR-- |
| 'Rosedale Pebbles' | Dark-Green | | - | Hybrid | Near-White | July | Hadrava, Jerry | .1999 |
| 'Rosedale Pickles' | Blue/Green | | - | Hybrid | Near-White | July | Hadrava, Jerry | .1999 |
| 'Rosedale Rosette' | Blue/Green | | - | Hybrid | - | - | Hadrava, Jerry | .1999 |
| 'Rosedale Shady Lady' | Med-Green | Streaked | Yellow | Hybrid | Light-Purple | July | Hadrava, Jerry | .2000 |
| 'Rosedale Spoons' | Blue/Green | | - | Unknown | Near-White | July | Hadrava, Jerry | .1999 |
| 'Rosedale Stitched in Silk' | Dark-Green | | - | Hybrid | Light-Purple | July | Hadrava, Jerry | .1999 |
| 'Rosedale Streaked Zipper' | Dark-Green | Streaked | White | Hybrid | Light-Purple | July into August | Hadrava, Jerry | .2000 |
| 'Rosedale Sugar Time' | Med-Green | Marginal | White | Unknown | Light-Purple | August | Hadrava, Jerry | .1999 |
| 'Rosedale Tablespoons' | Yellow | | - | Hybrid | Med-Lavender | July into August | Hadrava, Jerry | .2000 |
| 'Rosedale Terraced Hills' | Dark-Green | | - | Hybrid | Near-White | June | Hadrava, Jerry | .1999 |
| 'Rosedale Thunderheads' | Dark-Green | Marginal | Yellow | Hybrid | Light-Purple | July | Hadrava, Jerry | .2000 |
| 'Rosedale Tie-dyed' | Med-Green | Streaked | White | Hybrid | Med-Lavender | July into August | Hadrava, Jerry | .2000 |
| 'Rosedale Watersprout' | Dark-Green | Medial | White | Unknown | Pale-Lavender | June into July | Hadrava, Jerry | --NR-- |
| 'Rosedale Yellow Brick Road' | Med-Green | Streaked | White | Hybrid | Near-White | July | Hadrava, Jerry | .1999 |
| 'Rossing's Pride' | Med-Green | Marginal | Blue-Green | Nat-Sport | Pale-Lavender | July into August | Rossing, Richard | .1993 |
| 'Rosy' | Blue/Green | | - | Unknown | - | - | Klose, Heinz | --NR-- |
| 'Rotunda' | Blue/Green | | - | Hybrid | Pale-Lavender | June | Savory, Robert | .1998 |
| 'Rough Rider' | Blue/Green | | - | Unknown | - | - | Beilstein, Doug | --NR-- |
| 'Roughrider' | Med-Green | Marginal | White | Hybrid | Pure-White | August to September | Graves, Butch | .2008 |
| 'Roulette Russe' | Med-Green | | - | Unknown | Pale-Lavender | September | Bastille, Jocelyne | --NR-- |
| 'Roundabout' | Blue/Green | | - | Hybrid | Pale-Lavender | June | Savory, Robert | .1988 |
| 'Roundabout' | Yellow | | - | Unknown | Near-White | July | Unknown | --NR-- |
| 'Roy Lee Goodenough' | Med-Green | Streaked | Yellow | Hybrid | - | - | Goodenough, Rick | --NR-- |
| 'Royal Accolade' | Light-Green | Marginal | Green | Nat-Sport | Pure-White | August | Zumbar, Wm | .1986 |
| 'Royal Bells' | Dark-Green | Marginal | Yellow | Hybrid | Deep-Purple | August | Dishon, Jim | .1999 |
| 'Royal Golden Jubilee' | Med-Green | Medial | Yellow | Nat-Sport | Pale-Lavender | July | Ford, Richard & Mary | .2004 |
| 'Royal Highness' | Yellow | | - | Unknown | - | - | Minks, Eldren | --NR-- |
| 'Royal Oyster' | Med-Green | | - | Nat-Sport | Pure-White | August | Summers, Alex | --NR-- |
| 'Royal Rainbow' | Med-Green | Streaked | Yellow | Hybrid | - | - | Aden, Paul | .1978 |
| 'Royal Super' | Dark-Green | Streaked | Yellow | Nat-Sport | Pure-White | July into August | Walters Gardens & Falstad, Clarence | .2000 |
| 'Royal Wedding' | Med-Green | Marginal | White | TC Sport | Pure-White | August to September | Bergeron, Amy & Walters Gardens | --NR-- |
| 'Royalty' | Yellow | | - | Unknown | Light-Purple | July | Anderson, Kenneth | .1982 |
| 'RSSP' | Med-Green | Streaked | White | Unknown | - | - | Unknown | --NR-- |
| 'Rubber Ducky' | Light-Green | | - | Unknown | Pale-Lavender | July into August | Schwarz, Jim | .1996 |
| 'Rubies and Ruffles' | Dark-Green | Marginal | White | Unknown | Med-Lavender | August to September | Goodwin, Randy | .2009 |
| 'Ruby Benedict' | Blue/Green | Medial | Yellow | Hybrid | - | - | Benedict, Dr Ralph (Herb) | .1991 |
| 'Ruby Desires' | Dark-Green | Marginal | Yellow | Unknown | - | - | Klotz, Ruby | --NR-- |
| 'Ruby Slippers' | Med-Green | | - | Hybrid | Light-Purple | September | Ward, Dr Dick & Jane | .1999 |
| 'Ruffian' | Dark-Green | | - | Nat-Sport | Pale-Lavender | July | Asch, Stuart | .2009 |
| 'Ruffles' | Med-Green | | - | Unknown | Pale-Lavender | - | Lehman, Dick & AHS | .1986 |
| 'Ruffles and Flourishes' | Light-Green | | - | Unknown | - | - | Goodwin, Randy | --NR-- |
| 'Ruffles Galore' | Blue/Green | | - | Unknown | - | June into July | Powell, Loleta & Walek, Kevin | .2009 |
| 'Rufus Rider' | Dark-Green | Marginal | White | Hybrid | Pale-Lavender | July into August | Livingston, Ron | --NR-- |
| 'Rumor Has It' | Dark-Green | Medial | Light Green | Unknown | - | - | Sanford, Matt | --NR-- |
| 'Rumor Has It' | Med-Green | Streaked | Speckles | Hybrid | - | - | Spence, Jim | --NR-- |
| 'Rumpelstiltskin' | Dark-Green | Marginal | Light Green | Hybrid | Light-Purple | July | Savory, Robert & Savory, Dennis | .1997 |
| 'Rumpled Gilt' | Yellow | | - | Hybrid | - | - | Benedict, Dr Ralph (Herb) | --NR-- |
| 'Run Around' | Med-Green | | - | Unknown | - | July into August | Benedict, Dr R. (Herb) & Dorothy & Kuenster, Rod | .2010 |
| 'Runaround Sue' | Med-Green | Marginal | Yellow | Hybrid | Light-Purple | - | Wasitis, Chick | --NR-- |
| 'Russell Square' | Blue/Green | | - | Unknown | - | - | Crockett, Clyde | --NR-- |
| 'Rust Bucket' | Yellow | | - | Unknown | - | - | Goodenough, Rick | --NR-- |
| 'Rusty Bee' | Med-Green | | - | Hybrid | Light-Purple | July | Malloy, Alex | .1998 |
| 'Rusty's Tornado' | Light-Green | | - | Unknown | - | - | Rouillier, Denis | --NR-- |
| 'Ruth' | Blue/Green | | - | Nat-Sport | Pale-Lavender | June into July | Schwarz, Jim & Karen | .2014 |
| 'Rutherford Birchard Hayes' | Light-Green | | - | Unknown | Med-Lavender | - | Ruh, Peter & Jean | .2010 |
| 'Ruth's Green Edger' | Med-Green | | - | Unknown | - | - | Unknown | --NR-- |
|