| Cultivar Name | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
| 'Babbling Brook' | Giant | Med-Green | - | - | Hybrid | Pale-Lavender | - | Vaughn, Kevin & Walek, Kevin | .2009 |
| 'Baby Booties' | Small | Med-Green | Marginal | White | Hybrid | Light-Purple | July | Beilstein, Doug | .2012 |
| 'Baby Toes' | Small | Med-Green | - | - | Nat-Sport | Pale-Lavender | July into August | Zilis, Mark & Schwarz, Jim | .2015 |
| 'Badge of Glory' | Large | Med-Green | Marginal | Yellow | Nat-Sport | Near-White | June into July | Schwarz, Jim & Zilis, Mark | .2012 |
| 'Baiyu' | Giant | Med-Green | - | - | Hybrid | Near-White | June into July | Liu, Donghuan | .2016 |
| 'Bam Bam Blue' | Giant | Blue/Green | - | - | Unknown | - | - | Schulz, Ed | .2009 |
| 'Bamse' | Medium | Med-Green | Streaked | Green | Nat-Sport | Pale-Lavender | July into August | Anderson, Chuck & Sue | .2014 |
| 'Banana Pepper' | Large | Light-Green | - | - | Unknown | - | - | Hackbarth, Robert | .2015 |
| 'Barndance' | Large | Yellow | Streaked | Speckles | Hybrid | Pale-Lavender | July into August | Port, Linda | .2013 |
| 'Beam Me Up Scotty' | Large | Dark-Green | Streaked | White | Nat-Sport | Pale-Lavender | July into August | Schwarz, Jim | .2012 |
| 'Beautiful Dreamer' | Medium | Med-Green | Marginal | White | Hybrid | - | June into July | Ward, Dr Dick & Jane | .2010 |
| 'Beauty Queen' | Large | Blue/Green | - | - | Hybrid | - | August to September | Schmidt, Bevie | .2009 |
| 'Bella Noche' | Medium | Med-Green | Streaked | Yellow | Nat-Sport | Pale-Lavender | July into August | McHugh, Ed | .2015 |
| 'Belle Vernon Beauty' | Giant | Med-Green | - | - | Hybrid | Pale-Lavender | June into July | Zolock, Steve & Sarah | .2011 |
| 'Bellville Giant' | Giant | Blue/Green | - | - | Unknown | - | June into July | Wade, Van & Ward, Dr Dick & Jane | .2015 |
| 'Ben' | Giant | Med-Green | - | - | Unknown | - | July into August | Zilis, Mark & Schwarz, Jim | .2015 |
| 'Benedict's Heart's Desire' | Medium | Med-Green | - | - | Unknown | - | June into July | Benedict, Dr R. (Herb) & Dorothy & Kuenster, Rod | .2010 |
| 'Benedict's Regal Rhubarb' | Medium | Med-Green | Marginal | White | Unknown | - | - | Benedict, Dr R. (Herb) & Dorothy & Kuenster, Rod | .2010 |
| 'Bering Sea' | Large | Blue/Green | - | - | Hybrid | Near-White | June into July | Fox, Bob & Fox Hosta Farm | .2018 |
| 'Betty's Glory' | Large | Med-Green | Medial | Yellow | Nat-Sport | Pure-White | June into July | Mitchell, J. | .2014 |
| 'Beverly Sills' | Large | Med-Green | Marginal | White | Hybrid | Pale-Lavender | June into July | Goodenough, Rick | --NR-- |
| 'Beyond Glory' | Large | Dark-Green | Medial | Yellow | TC Sport | Light-Purple | July | Hansen, Hans & Walters Gardens | .2018 |
| 'BFF' | Small | Yellow | - | - | Nat-Sport | Pale-Lavender | June into July | Schwarz, Jim & Zilis, Mark | .2012 |
| 'Big Bubba' | Giant | Med-Green | - | - | Hybrid | Near-White | June into July | Hanna, Clarence | .2018 |
| 'Big Fella' | Giant | Blue/Green | - | - | Hybrid | Near-White | June into July | Stoddard, Gary | .2012 |
| 'Big Gary' | Giant | Blue/Green | - | - | Unknown | Near-White | June into July | Larsen, Kim | .2009 |
| 'Big Old Teddy Bear' | Giant | Blue/Green | - | - | Unknown | Near-White | June into July | Schulz, Ed | .2017 |
| 'Bill Meyer' | Medium | Blue/Green | - | - | Unknown | - | - | Freeman, Franc | .2011 |
| 'Bippity Boppity Blue' | Small | Blue/Green | - | - | Unknown | - | July | Goodwin, Randy | .2009 |
| 'Birthday Candles' | Medium | Yellow | - | - | Hybrid | Pale-Lavender | June into July | Teager, David | .2017 |
| 'Black Limerick' | Medium | Blue/Green | - | - | Unknown | Near-White | June into July | Simpers, Lucille | --NR-- |
| 'Black Pearl' | Medium | Dark-Green | - | - | Hybrid | Med-Lavender | June into July | Cross, Peter | .2001 |
| 'Blind Date' | Large | Light-Green | Marginal | Yellow | Hybrid | Near-White | June into July | Ward, Dr Dick & Jane | .2011 |
| 'Blitz' | Medium | Med-Green | Marginal | Yellow | Nat-Sport | Pale-Lavender | July into August | Heemskerk, Gerardus | .2011 |
| 'Blue and Gold' | Medium | Blue/Green | Marginal | Yellow | Nat-Sport | Pale-Lavender | July into August | Summers, Alex | --NR-- |
| 'Blue Butterfly' | Small | Blue/Green | - | - | Unknown | Pale-Lavender | August | Benedict, Dr R. (Herb) & Kuenster, Rod | .2010 |
| 'Blue Cups' | Large | Blue/Green | - | - | Unknown | - | - | Jury, Felix | --NR-- |
| 'Blue Dino' | Medium | Blue/Green | - | - | Nat-Sport | Near-White | June | Jentsch, Klaus | --NR-- |
| 'Blue Hour' | Giant | Blue/Green | - | - | Unknown | Near-White | June into July | Ward, Dr Dick & Jane | .2009 |
| 'Blue Ivory Streaked' | Small | Blue/Green | - | - | Nat-Sport | Med-Lavender | July into August | Ramsey, Reldon | --NR-- |
| 'Blue Jewel' | Medium | Blue/Green | - | - | Unknown | Med-Lavender | July into August | Benedict, Dr R. (Herb) & Kuenster, Rod | .2010 |
| 'Blue Lettuce' | Large | Blue/Green | - | - | Hybrid | Pale-Lavender | June into July | Zilis, Mark | .2012 |
| 'Blue Magic' | Small | Blue/Green | Streaked | Yellow | Nat-Sport | Pale-Lavender | July into August | Ford, Richard & Mary | .2013 |
| 'Blue Magoo' | Large | Blue/Green | Streaked | Yellow | Unknown | - | - | Hackbarth, Robert | --NR-- |
| 'Blue Pointer' | Large | Blue/Green | - | - | Hybrid | Near-White | June into July | Zilis, Mark | .2010 |
| 'Blue Ribbon' | Large | Blue/Green | - | - | Unknown | - | July into August | Schulz, Ed | .2012 |
| 'Blue Ribbon for David Lewis' | Giant | Blue/Green | - | - | Unknown | - | June into July | Freeman, Franc | .2011 |
| 'Blue Shimmer' | Large | Blue/Green | - | - | Unknown | - | - | Tompkins, Chet | --NR-- |
| 'Blue Spanish Eyes' | Large | Dark-Green | Marginal | White | Hybrid | Near-White | June into July | Elslager, Ed | .2002 |
| 'Blue Tinge' | Small | Blue/Green | Medial | Yellow | Hybrid | Med-Lavender | July into August | Phillips, L. | .2009 |
| 'Blue Tips' | Medium | Blue/Green | - | - | Hybrid | Pale-Lavender | July | Purtymun, Charles & Walek, Kevin | .2009 |
| 'Blue Umbrellas' | Giant | Dark-Green | - | - | Hybrid | Pale-Lavender | June into July | Shaw, Florence & Aden, Paul | .1976 |
| 'Blue Wonder' | Large | Blue/Green | - | - | TC Sport | Pale-Lavender | July into August | Zilis, Mark | .2009 |
| 'Bluebird' | Medium | Blue/Green | - | - | Unknown | Near-White | June into July | Savory, Robert | .1985 |
| 'Bluestone' | Large | Blue/Green | - | - | Hybrid | Med-Lavender | June into July | Ruh, Jean | .2010 |
| 'Bob the Builder' | Medium | Blue/Green | - | - | Nat-Sport | Pure-White | June into July | Schwarz, Jim | .2009 |
| 'Body and Soul' | Large | Med-Green | Marginal | White | Hybrid | Pale-Lavender | July | Ward, Dr Dick & Jane | .2014 |
| 'Bohemia Yellow Corvette' | Medium | Yellow | - | - | Hybrid | Pale-Lavender | July into August | Mirka, Vladimir | .2017 |
| 'Bombs Bursting in Air' | Large | Med-Green | - | - | Hybrid | Pale-Lavender | September | Stegeman, Bev & Dave | .2012 |
| 'Boo Berry' | Medium | Blue/Green | - | - | Unknown | - | - | Kuenster, Rod | --NR-- |
| 'Boracay' | Medium | Light-Green | Marginal | White | Nat-Sport | Pale-Lavender | June into July | van den Top, Jan & Van Eechaute, Danny | .2008 |
| 'Border Street' | Large | Dark-Green | Marginal | White | Hybrid | Pale-Lavender | June into July | Van Eechaute, Danny | .2010 |
| 'Bounty' | Small | Blue/Green | Medial | White | Nat-Sport | Med-Lavender | July into August | Van Eechaute, Danny | .2015 |
| 'Branching Out' | Medium | Dark-Green | - | - | Hybrid | Near-White | July into September | Avent, Tony | .2012 |
| 'Bright Feather' | Large | Yellow | Marginal | White | Unknown | Med-Lavender | June into July | Schwarz, Jim | .2011 |
| 'Brilliant Sunset' | Medium | Dark-Green | Marginal | White | Nat-Sport | Near-White | June into July | Elslager, Ed | .2005 |
| 'Bri-Sun' | Medium | Yellow | - | - | Unknown | - | July into August | McHugh, Ed | .2015 |
| 'Broadway' | Medium | Dark-Green | Marginal | White | Nat-Sport | Pale-Lavender | June into July | Van Eechaute, Danny | .2013 |
| 'Brocade' | Small | Yellow | - | - | Hybrid | Near-White | September | Goodwin, Randy | .2013 |
| 'Brodie's Bonanza' | Small | Light-Green | - | - | Hybrid | Pale-Lavender | September | Goodwin, Randy | .2013 |
| 'Brother Jack' | Medium | Dark-Green | - | - | Unknown | Light-Purple | August | Kwick, Charles | .2017 |
| 'Brutus Buckeye' | Giant | Med-Green | - | - | Unknown | - | June into July | Wade, Van & Ward, Dr Dick & Jane | .2015 |
| 'Buckaroo' | Medium | Med-Green | - | - | Unknown | - | June into July | Duncan, Mary Jo | .2014 |
| 'Buffalo Bill' | Large | Blue/Green | - | - | Nat-Sport | Near-White | June into July | Zubrik, Milan & Dana | .2014 |
| 'Bulletproof' | Medium | Blue/Green | - | - | Nat-Sport | Pale-Lavender | July into August | Zilis, Mark | .2009 |
| 'Bunker Hill' | Medium | Blue/Green | Streaked | Speckles | Nat-Sport | Pale-Lavender | June into July | Bennerup, Pierre & Malloy, Alex | .2001 |
| 'Busia's Choice' | Miniature | Light-Green | - | - | Hybrid | Pale-Lavender | September | Savory, Dennis | .2015 |
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