| Cultivar Name | Source | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Registered |
| 'Babbling Brook' | Vaughn, Kevin & Walek, Kevin | Giant | Med-Green | - | - | Hybrid | Pale-Lavender | - | .2009 |
| 'Back Bay' | Vaughn, Kevin & Walek, Kevin | Giant | Blue/Green | - | - | Hybrid | Near-White | June into July | .2009 |
| 'Baggy Pants' | Seaver, Mildred | Large | - | - | - | Unknown | - | - | --NR-- |
| 'Banana Boat' | Lachman, Wm & Eleanor | Medium | Med-Green | - | - | Hybrid | Pale-Lavender | July | .1991 |
| 'Barnacle Blue' | Goodenough, Rick | - | Blue/Green | - | - | Unknown | - | - | --NR-- |
| 'Beatrice' | Williams, Frances | Small | Med-Green | Streaked | White | Hybrid | Deep-Purple | July | --NR-- |
| 'Beatrice Variegated' | Williams, Frances | Medium | Dark-Green | Streaked | White | Nat-Sport | Light-Purple | July | --NR-- |
| 'Belmont Stakes' | Goodenough, Rick | - | Med-Green | Marginal | White | Hybrid | - | - | --NR-- |
| 'Bengee' | Harrison, Dr Jamison & Ruh, Peter | Medium | Yellow | - | - | Hybrid | Pale-Lavender | June into July | .1999 |
| 'Betsy King' | Williams, Frances | Medium | Med-Green | - | - | Hybrid | Deep-Purple | - | .1986 |
| 'Bette Davis Eyes' | Vaughn, Kevin | Medium | Med-Green | - | - | Hybrid | Pale-Lavender | August | .1987 |
| 'Beverly Sills' | Goodenough, Rick | Large | Med-Green | Marginal | White | Hybrid | Pale-Lavender | June into July | --NR-- |
| 'Big Daddy' | Shaw, Florence | Large | Blue/Green | - | - | Nat-Sport | Pure-White | June into July | .1978 |
| 'Big Mama' | Shaw, Florence | Large | Blue/Green | - | - | Hybrid | Near-White | - | .1978 |
| 'Bill and Eleanor' | Lachman, Eleanor & Schmid, Tom | Large | Dark-Green | Medial | Yellow | Unknown | Med-Lavender | July into August | .2001 |
| 'Birchwood Blue' | Shaw, Florence | Large | Blue/Green | - | - | Hybrid | Pale-Lavender | June into July | .1986 |
| 'Birchwood Elegance' | Shaw, Florence | Giant | Blue/Green | - | - | Hybrid | Pure-White | June into July | .1986 |
| 'Birchwood Gem' | Shaw, Florence & Ruh, Peter | Small | Med-Green | - | - | Unknown | Light-Purple | July | .1989 |
| 'Birchwood Gold' | Shaw, Florence | Medium | Yellow | - | - | Hybrid | Pale-Lavender | June into July | .1986 |
| 'Birchwood Green' | Shaw, Florence | Large | Med-Green | - | - | Hybrid | Near-White | June into July | .1986 |
| 'Birchwood Parky's Blue' | Shaw, Florence | Small | Blue/Green | - | - | Hybrid | Near-White | June into July | .1986 |
| 'Birchwood Parky's Gold' | Shaw, Florence | Medium | Yellow | - | - | Hybrid | Pale-Lavender | July | .1986 |
| 'Birchwood Ripples' | Shaw, Florence | Large | Med-Green | - | - | Unknown | - | - | --NR-- |
| 'Birchwood Ruffled Queen' | Shaw, Florence | Large | Med-Green | - | - | Hybrid | Pale-Lavender | June into July | .1986 |
| 'Black Forest' | Bemis, Royall | - | - | - | - | Unknown | - | - | --NR-- |
| 'Blarney Stone' | Goodenough, Rick | Giant | Med-Green | - | - | Unknown | Near-White | - | --NR-- |
| 'Blue Angel' | Shaw, Florence | Giant | Blue/Green | - | - | Unknown | Pure-White | - | .1986 |
| 'Blue Bayou' | Vaughn, Kevin | Giant | Blue/Green | - | - | Hybrid | Pale-Lavender | June into July | .1987 |
| 'Blue Beauty' | Shaw, Florence & Summers, Alex | Large | Blue/Green | - | - | Unknown | Near-White | June | .1986 |
| 'Blue Blazes' | Vaughn, Kevin | Large | Blue/Green | - | - | Hybrid | Near-White | June into July | .1988 |
| 'Blue Cadet' | Shaw, Florence | Small | Blue/Green | - | - | Hybrid | Pale-Lavender | July into August | .1974 |
| 'Blue Frost' | Nesmith, Elizabeth & AHS | Giant | Blue/Green | - | - | Unknown | Near-White | June into July | .1986 |
| 'Blue Gown' | Lachman, Wm & Eleanor | Medium | Blue/Green | - | - | Unknown | Near-White | June into July | .1992 |
| 'Blue Lace' | Vaughn, Kevin | Large | Blue/Green | - | - | Hybrid | Pale-Lavender | July | .1977 |
| 'Blue Plate Special' | Seaver, Mildred | Giant | Blue/Green | - | - | Unknown | Near-White | July | --NR-- |
| 'Blue Platters' | Bemis, Royall | Giant | Blue/Green | - | - | Unknown | - | - | --NR-- |
| 'Blue Tinge' | Phillips, L. | Small | Blue/Green | Medial | Yellow | Hybrid | Med-Lavender | July into August | .2009 |
| 'Blue Umbrellas' | Shaw, Florence & Aden, Paul | Giant | Dark-Green | - | - | Hybrid | Pale-Lavender | June into July | .1976 |
| 'Bold and Brassy' | Seaver, Mildred & Walek, Kevin | Large | Yellow | - | - | Unknown | Pale-Lavender | June into July | .2009 |
| 'Bold Edger' | Vaughn, Kevin | Medium | Med-Green | Marginal | White | Hybrid | Pale-Lavender | - | .1983 |
| 'Bonanza' | Nesmith, Elizabeth & Ruh, Peter | Large | Dark-Green | - | - | Unknown | Med-Lavender | July | .1997 |
| 'Border Bandit' | Lachman, Wm & Eleanor | Medium | Dark-Green | Marginal | Yellow | Hybrid | Light-Purple | August | .1992 |
| 'Brandywine' | Herold, Roy | Miniature | Med-Green | - | - | Hybrid | Light-Purple | August | .1993 |
| 'Brass Knuckles' | Parks, David | Giant | Blue/Green | Medial | Yellow | Unknown | - | - | --NR-- |
| 'Brave Amherst' | Lachman, Wm & Eleanor | Large | Blue/Green | Marginal | Greenish White | Hybrid | Near-White | July | .1993 |
| 'Breeder's Choice' | Vaughn, Kevin | Medium | Med-Green | Marginal | White | Hybrid | Pale-Lavender | June into July | .1987 |
| 'Breeder's Cup' | Goodenough, Rick | Large | Blue/Green | Streaked | Yellow | Unknown | - | - | --NR-- |
| 'Brookwood Blue' | Fraim, Leola & Ruh, Peter | Large | Blue/Green | - | - | Hybrid | Near-White | July | .1991 |
| 'Bruce's Blue' | Briggs Nursery-MA | Medium | Blue/Green | - | - | Unknown | Pale-Lavender | July | .1991 |
| 'Butter Yellow' | Vaughn, Kevin | Large | Yellow | - | - | Unknown | Pale-Lavender | June into July | .1982 |
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