| Cultivar | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
| 'Abiqua Big Sky' | Giant | Blue/Green | - | - | Unknown | - | June into July | Purtymun, Charles & Ruh, Peter | .2008 |
| 'Blue Mammoth' | Giant | Blue/Green | - | - | Hybrid | Near-White | June into July | Aden, Paul & Ruh, Peter & Jean | .2010 |
| 'Eleanor J Reath' | Giant | Blue/Green | - | - | Hybrid | Near-White | June into July | Reath, David | .1986 |
| 'Gray Cole' | Giant | Blue/Green | - | - | Hybrid | Near-White | June | Gray and Cole Nursery & Kuk, Bob | .1985 |
| 'Lakeport Blue' | Large | Blue/Green | - | - | Unknown | Near-White | June | Tompkins, Chet | .1984 |
| 'Powder Blue' | Giant | Blue/Green | - | - | Unknown | Pale-Lavender | June | Sugita, Hajime & Ruh, Peter | .1998 |
| 'Ryan's Big One' | Giant | Blue/Green | - | - | Hybrid | Near-White | June into July | Englerth, Lawrence & Ryan | .1982 |
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