| Giant Size Hostas | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
| 'Babbling Brook' | Med-Green | - | - | Hybrid | Pale-Lavender | - | Vaughn, Kevin & Walek, Kevin | .2009 |
| 'Baby Boomer' | Med-Green | Streaked | White | Hybrid | Pale-Lavender | July into August | Elslager, Ed | .2002 |
| 'Back Bay' | Blue/Green | - | - | Hybrid | Near-White | June into July | Vaughn, Kevin & Walek, Kevin | .2009 |
| 'Baiyu' | Med-Green | - | - | Hybrid | Near-White | June into July | Liu, Donghuan | .2016 |
| 'Bam Bam Blue' | Blue/Green | - | - | Unknown | - | - | Schulz, Ed | .2009 |
| 'Banana Split' | Med-Green | Medial | White | Hybrid | Med-Lavender | July into August | Beilstein, Doug | .2011 |
| 'Bands of Orion' | Blue/Green | - | - | Nat-Sport | Near-White | June into July | Thompson, Steve | --NR-- |
| 'Bankrupt' | Light-Green | - | - | Nat-Sport | Pale-Lavender | July into August | Elslager, Ed | --NR-- |
| 'Barger Blue' | Blue/Green | - | - | Hybrid | Pale-Lavender | July into August | Barger, Bill & Anna | .2016 .2018 |
| 'Beauty Substance' | Blue/Green | Marginal | Yellow | Nat-Sport | Pale-Lavender | July into August | van den Top, Jan | --NR-- |
| 'Behemoth' | Med-Green | - | - | Hybrid | Pale-Lavender | June into July | Savory, Robert | .1988 |
| 'Belle Vernon Beauty' | Med-Green | - | - | Hybrid | Pale-Lavender | June into July | Zolock, Steve & Sarah | .2011 |
| 'Bellville Giant' | Blue/Green | - | - | Unknown | - | June into July | Wade, Van & Ward, Dr Dick & Jane | .2015 |
| 'Ben' | Med-Green | - | - | Unknown | - | July into August | Zilis, Mark & Schwarz, Jim | .2015 |
| 'Betsy' | Blue/Green | - | - | Unknown | - | - | Unknown | --NR-- |
| 'Bette Comfrey' | Dark-Green | - | - | Unknown | Pale-Lavender | July | Beilstein, Doug | .2007 |
| 'Betty Hagerman' | Med-Green | - | - | Hybrid | - | June into July | Kwick, Charles | .2016 |
| 'Big Beauty' | Med-Green | Marginal | White | Hybrid | Pale-Lavender | June into July | de Rooij, Piet | .2015 |
| 'Big Boy' | Med-Green | - | - | Hybrid | Pale-Lavender | July | Simpers, Lucille | .1986 |
| 'Big Bubba' | Med-Green | - | - | Hybrid | Near-White | June into July | Hanna, Clarence | .2018 |
| 'Big Dude' | Med-Green | - | - | Hybrid | Pale-Lavender | June into July | Balitewicz, Bob | --NR-- |
| 'Big Fella' | Blue/Green | - | - | Hybrid | Near-White | June into July | Stoddard, Gary | .2012 |
| 'Big Fred' | Blue/Green | Marginal | Yellow | Hybrid | - | - | Benedict, Dr Ralph (Herb) | --NR-- |
| 'Big Gary' | Blue/Green | - | - | Unknown | Near-White | June into July | Larsen, Kim | .2009 |
| 'Big Hearted Two' | Med-Green | - | - | Unknown | - | - | Miller, Jeff | --NR-- |
| 'Big Hobber' | Blue/Green | Marginal | Yellow | Nat-Sport | Pale-Lavender | July into August | Sisson, Kathie | --NR-- |
| 'Big John' | Med-Green | - | - | Hybrid | Near-White | June into July | Owens, Clarence | .1986 |
| 'Big John's Brother' | Blue/Green | - | - | Unknown | - | - | Unknown | --NR-- |
| 'Big Kahuna' | Med-Green | Medial | Yellow | Hybrid | Near-White | June into July | Skaggs, Virginia & Brian | --NR-- |
| 'Big Mamma's House' | Blue/Green | Streaked | Yellow | Hybrid | Pale-Lavender | June into July | Elslager, Ed | .2003 |
| 'Big Mo' | Blue/Green | - | - | Hybrid | Pale-Lavender | - | Stephens, Ray | .1990 |
| 'Big Old Bob' | Blue/Green | - | - | Hybrid | Near-White | July | Zolock, Steve & Sarah | .2005 |
| 'Big Old Teddy Bear' | Blue/Green | - | - | Unknown | Near-White | June into July | Schulz, Ed | .2017 |
| 'Big Performer' | Med-Green | Streaked | White | Nat-Sport | Pale-Lavender | June into July | Van Eechaute, Danny | --NR-- |
| 'Big Pizza Pie' | Blue/Green | Medial | Yellow | Hybrid | - | - | Elslager, Ed | .2001 |
| 'Big Sam' | Med-Green | - | - | Unknown | Pale-Lavender | - | Klopping, Minnie | .1986 |
| 'Big Stuff' | Med-Green | - | - | Unknown | Near-White | July | Freeman, Franc & Sally | --NR-- |
| 'Big Top' | Blue/Green | - | - | Hybrid | Near-White | July | Elslager, Ed | .2003 |
| 'Bigfoot' | Blue/Green | - | - | Unknown | Pure-White | - | Duback, Robyn | .1998 |
| 'Bigga Luigi' | Blue/Green | - | - | TC Sport | Near-White | June into July | Kuk, Bob | .2002 |
| 'Biggie' | Med-Green | - | - | Hybrid | Pale-Lavender | July into August | Elslager, Ed | .2003 |
| 'Birchwood Elegance' | Blue/Green | - | - | Hybrid | Pure-White | June into July | Shaw, Florence | .1986 |
| 'Blackhawk' | Dark-Green | - | | Unknown | Pale-Lavender | June into July | Fox, Bob & G | .2019 |
| 'Blackjack' | Blue/Green | - | - | Hybrid | Pure-White | July | Owens, Clarence | .1990 |
| 'Blarney Stone' | Med-Green | - | - | Unknown | Near-White | - | Goodenough, Rick | --NR-- |
| 'Blizzard' | Med-Green | Streaked | White | TC Sport | Pale-Lavender | July into August | Anderson, Jim | .2003 |
| 'Blockbuster' | Med-Green | Streaked | Speckles | Hybrid | Pale-Lavender | July into August | Elslager, Ed | .2003 |
| 'Blue Angel' | Blue/Green | - | - | Unknown | Pure-White | - | Shaw, Florence | .1986 |
| 'Blue Bayou' | Blue/Green | - | - | Hybrid | Pale-Lavender | June into July | Vaughn, Kevin | .1987 |
| 'Blue Blazes Splashed' | Blue/Green | Streaked | Yellow | Unknown | - | July into August | Silvers, Bill | .2009 |
| 'Blue Delight' | Blue/Green | - | - | Nat-Sport | Near-White | - | Moore, Ernest | .1993 |
| 'Blue Eagle' | Blue/Green | - | - | Hybrid | Near-White | June into July | Lydell, Ransom | --NR-- |
| 'Blue Frost' | Blue/Green | - | - | Unknown | Near-White | June into July | Nesmith, Elizabeth & AHS | .1986 |
| 'Blue Hawaii' | Blue/Green | - | - | Hybrid | Light-Purple | July | Petryszyn, Olga | .1999 |
| 'Blue Hour' | Blue/Green | - | - | Unknown | Near-White | June into July | Ward, Dr Dick & Jane | .2009 |
| 'Blue Legend' | Blue/Green | - | - | Unknown | Pale-Lavender | June into July | Anderson, Kenneth | --NR-- |
| 'Blue Mammoth' | Blue/Green | - | - | Hybrid | Near-White | June into July | Aden, Paul & Ruh, Peter & Jean | .2010 |
| 'Blue Moonlight Cup' | Blue/Green | - | - | Hybrid | Near-White | July into August | Hicks, Gerry | .2015 |
| 'Blue Piecrust' | Blue/Green | - | - | Unknown | Near-White | June into July | Summers, Alex | .1986 |
| 'Blue Plate Special' | Blue/Green | - | - | Unknown | Near-White | July | Seaver, Mildred | --NR-- |
| 'Blue Platters' | Blue/Green | - | - | Unknown | - | - | Bemis, Royall | --NR-- |
| 'Blue Ribbon for David Lewis' | Blue/Green | - | - | Unknown | - | June into July | Freeman, Franc | .2011 |
| 'Blue Ridge' | Med-Green | - | - | Nat-Sport | Pale-Lavender | June into July | Solberg, Robert | .2009 |
| 'Blue Rock' | Blue/Green | - | - | Unknown | Near-White | June into July | Fisher, Eunice V. & Stone, David | .1986 |
| 'Blue Saucers' | Blue/Green | - | - | Hybrid | Near-White | June into July | Powell, Loleta | .1977 |
| 'Blue Seer' | Blue/Green | - | - | Hybrid | Near-White | June into July | Aden, Paul & Zilis, Mark | .2010 |
| 'Blue Tiers' | Blue/Green | - | - | Hybrid | - | - | Aden, Paul | .1976 |
| 'Blue Umbrellas' | Dark-Green | - | - | Hybrid | Pale-Lavender | June into July | Shaw, Florence & Aden, Paul | .1976 |
| 'Blue Umbrellas Streaked' | Blue/Green | Streaked | Yellow | Nat-Sport | - | - | Meyer, Bill | --NR-- |
| 'Blueberry Waffles' | Med-Green | - | - | Hybrid | Pale-Lavender | June into July | Brown, Sandy | .2008 |
| 'Blue-eyed Dragon' | Blue/Green | - | - | Hybrid | Pale-Lavender | June into July | Fox, Bob & Fox Hosta Farm | .2018 |
| 'Bluffview Emma Rose' | Yellow | - | - | Unknown | - | - | Kniffin, Brian & Miller, Jeff | --NR-- |
| 'Bob' | Dark-Green | - | - | Hybrid | - | - | Avent, Tony | --NR-- |
| 'Bogaria' | Blue/Green | - | - | Unknown | - | - | Wade, Van | --NR-- |
| 'Bold Ruffles' | Blue/Green | - | - | Nat-Sport | Pale-Lavender | June into July | Arett, Anne | .1975 |
| 'Bolt' | Med-Green | - | - | Hybrid | Pale-Lavender | - | Gilligan, Madelon | .2012 |
| 'Borsch 1' | Blue/Green | - | - | Unknown | Pale-Lavender | June into July | Borsch, Wm & Ruh, Peter | .1999 |
| 'Bottom Line' | Med-Green | Marginal | Creamy White | TC Sport | Pale-Lavender | July | Anderson, Jim | .2003 |
| 'Brass Knuckles' | Blue/Green | Medial | Yellow | Unknown | - | - | Parks, David | --NR-- |
| 'Brazen Hussy' | Yellow | - | - | Hybrid | Pale-Lavender | June into July | Duback, Robyn | .2000 |
| 'Brill's Blue Cup' | Blue/Green | - | - | Unknown | - | - | Brill, Kirk | --NR-- |
| 'Brutus' | Med-Green | - | - | Hybrid | Light-Purple | July into August | Beilstein, Doug | .2007 |
| 'Brutus Buckeye' | Med-Green | - | - | Unknown | - | June into July | Wade, Van & Ward, Dr Dick & Jane | .2015 |
| 'Buckanon' | Blue/Green | - | - | Hybrid | Near-White | June | Moldovan, Steve | .1983 |
| 'Buckeye' | Med-Green | Marginal | Yellow | Nat-Sport | Pale-Lavender | July | Goad, Tom | .2000 |
| 'Buckeye Blue' | Blue/Green | - | - | Unknown | Near-White | June into July | Ward, Dr Dick & Jane | .1997 |
| 'Bumpity Bump' | Blue/Green | - | - | Unknown | - | - | Sisson, Kathie | --NR-- |
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