| Cultivar Name | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
| 'Devon Blue' | Medium | Blue/Green | | | Unknown | Pale-Lavender | July into August | Smith, Eric & Bowden, Roger and Ann | .1988 |
| 'Devon Cloud' | Medium | Med-Green | Medial | Yellow | Nat-Sport | Med-Lavender | July | Bowden, Roger & Ann | --NR-- |
| 'Devon Desire' | Giant | Med-Green | | | Unknown | Pale-Lavender | July | Bowden, Roger & Ann & Ruh, Peter | .2010 |
| 'Devon Dream' | Small | Blue/Green | | | Nat-Sport | Med-Lavender | July into August | Bowden, Roger & Ann | --NR-- |
| 'Devon Giant' | Giant | Blue/Green | | | Unknown | Near-White | July into August | Bowden, Roger | --NR-- |
| 'Devon Gold' | Small | Light-Green | | | Unknown | Light-Purple | July | Bowden, Roger & Ruh, Peter | .2005 |
| 'Devon Green' | Medium | Dark-Green | | | Nat-Sport | Pale-Lavender | July | Bowden, Roger & Ruh, Peter | .2005 |
| 'Devon Hills' | Large | Med-Green | | | Hybrid | | | Bowden, Roger | --NR-- |
| 'Devon Mist' | Large | Blue/Green | | | Hybrid | Pale-Lavender | | Bowden, Roger & Ruh, Peter | .2005 |
| 'Devon Moor' | Medium | Med-Green | | | Unknown | | | Bowden, Roger | --NR-- |
| 'Devon Red' | Small | Med-Green | | | Hybrid | | | Bowden, Roger | --NR-- |
| 'Devon Tor' | Giant | Med-Green | | | Hybrid | Light-Purple | June into July | Bowden, Roger & Ruh, Peter | .2005 |
| 'Devon Tot' | Medium | Med-Green | | | Unknown | Med-Lavender | | Bowden, Roger & Ann | --NR-- |
| 'Eldorado' | Large | Blue/Green | Marginal | Yellow | Unknown | | | Smith, Eric & Bowden, Roger and Ann | --NR-- |
| 'Green Guppy' | Miniature | Light-Green | | | Unknown | Light-Purple | | Bowden,Roger & Ann | --NR-- |
| 'Iced Lemon' | Small | Light-Green | Marginal | White | Nat-Sport | Light-Purple | July | Bowden, Roger | .2006 |
| 'Myerscough Magic' | Large | Blue/Green | Medial | White | Nat-Sport | Near-White | June into July | Bowden, Roger | --NR-- |
| 'Saint Fiacre' | Small | Blue/Green | | | Hybrid | Pale-Lavender | | Bowden, Roger | --NR-- |
| 'Touchstone' | Medium | Med-Green | Marginal | White | Nat-Sport | Light-Purple | July into August | Bowden, Roger | --NR-- |
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