| Cultivar | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
| 'Blauglut' | Medium | Blue/Green | - | - | Unknown | Pale-Lavender | August | Klose, Heinz & Ruh, Peter & Jean | .2003 |
| 'Blaumeise' | Small | Blue/Green | - | - | Unknown | Pale-Lavender | August | Klose, Heinz & Ruh, Peter & Jean | .2003 |
| 'Blauspecht' | Medium | Blue/Green | - | - | Unknown | Pale-Lavender | July into August | Klose, Heinz & Ruh, Peter & Jean | .2003 |
| 'Blue Danube' | Small | Blue/Green | - | - | Unknown | Pale-Lavender | July | Smith, Eric & BHHS | .1988 |
| 'Blue for You' | Medium | Blue/Green | - | - | Hybrid | Near-White | June into July | Benedict, Dr Ralph (Herb) | .1991 |
| 'Blue Horizon' | Medium | Blue/Green | - | - | Hybrid | Near-White | June into July | Englerth, Lawrence | .1985 |
| 'Blue Jay' | Small | Blue/Green | - | - | Hybrid | Pale-Lavender | June into July | Benedict, Dr Ralph (Herb) | .1987 |
| 'Brother Ronald' | Medium | Blue/Green | - | - | Unknown | Pure-White | July into August | Smith, Eric & BHHS | .1988 |
| 'Camelot' | Medium | Blue/Green | - | - | Unknown | Pale-Lavender | July | Smith, Eric & BHHS | .1988 |
| 'Dimple' | Small | Blue/Green | - | - | Unknown | Pale-Lavender | July | Chatto, Beth | .2002 |
| 'Dorset Flair' | Medium | Blue/Green | - | - | Hybrid | Light-Purple | August to October | Smith, Eric & Ruh, Peter | .1990 |
| 'Hadspen Blue' | Large | Blue/Green | - | - | Unknown | Pale-Lavender | July into August | Smith, Eric & Aden, Paul | .1976 |
| 'Happiness' | Medium | Blue/Green | - | - | Unknown | Pale-Lavender | July into August | Smith, Eric & BHHS | .1988 |
| 'Love Pat' | Large | Blue/Green | - | - | Hybrid | Pale-Lavender | - | Shaw, Florence & Aden, Paul | .1978 |
| 'Osprey' | Medium | Blue/Green | - | - | Unknown | Pure-White | June into July | Smith, Eric & BHHS | .1988 |
| 'Prairie Sky' | Medium | Blue/Green | - | - | Hybrid | Pale-Lavender | July into August | Hansen, Hans & Shady Oaks Nursery | .2005 |
| 'Sherborne Songbird' | Large | Blue/Green | - | - | Unknown | Pale-Lavender | July into August | Smith, Eric & BHHS | .1988 |
| 'Tokudama' | Medium | Blue/Green | - | - | Unknown | Near-White | June into July | Unknown | --NR-- |
| 'Wisley No. 821422' | - | - | - | | xDuplicate | - | - | Duplicate Name | --NR- |
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