| No. | Cultivar | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
|
1
| 'Devon Blue' | Medium | Blue/Green | - | - | Unknown | Pale-Lavender | July into August | Smith, Eric & Bowden, Roger & Bowden, Ann | .1988 |
|
2
| 'Devon Cream' | Medium | Dark-Green | - | - | Unknown | Med-Lavender | - | Unknown | --NR-- |
|
3
| 'Devon Desire' | Giant | Med-Green | - | - | Unknown | Pale-Lavender | July | Bowden, Roger & Bowden, Ann & Ruh, Peter | .2010 |
|
4
| 'Devon Giant' | Giant | Blue/Green | - | - | Hybrid | Near-White | July into August | Bowden, Roger | .2019 |
|
5
| 'Devon Gold' | Small | Light-Green | - | - | Unknown | Light-Purple | July | Bowden, Roger & Ruh, Peter | .2005 |
|
6
| 'Devon Green' | Medium | Dark-Green | - | - | Sport | Pale-Lavender | July | Bowden, Roger & Ruh, Peter | .2005 |
|
7
| 'Devon Hills' | Large | Dark-Green | - | - | Hybrid | Near-White | July | Bowden, Roger & Bowden, Ann & Ruh, Peter & Ruh, Jean | .2010 |
|
8
| 'Devon Mist' | Large | Blue/Green | - | - | Hybrid | Pale-Lavender | - | Bowden, Roger & Ruh, Peter | .2005 |
|
9
| 'Devon Moor' | Medium | Med-Green | - | - | Unknown | - | - | Bowden, Roger | --NR-- |
|
10
| 'Devon Red' | Small | Med-Green | - | - | Hybrid | - | - | Bowden, Roger | --NR-- |
|
11
| 'Devon Tor' | Giant | Med-Green | - | - | Hybrid | Light-Purple | June into July | Bowden, Roger & Ruh, Peter | .2005 |
|