| No. | Cultivar Name | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
|
1
| 'I Bluit' | Medium | Blue/Green | | - | Unknown | Pale-Lavender | July into August | Benedict, Dr Ralph (Herb) & Benedict, Dorothy & Kuenster, Rod | .2010 |
|
2
| 'Iggie' | Medium | Yellow | | - | Unknown | Pale-Lavender | July | Benedict, Dr Ralph (Herb) | --NR-- |
|
3
| 'Imperial Potentate' | Large | Med-Green | Streaked | Speckles | Sport | Pale-Lavender | July into August | Benedict, Dr Ralph (Herb) & Benedict, Dorothy | .1999 |
|
4
| 'Incredible' | Giant | Blue/Green | Marginal | Chartreuse | Unknown | Near-White | June into July | Benedict, Dr Ralph (Herb) | --NR-- |
|
5
| 'Iszat U Doc' | Medium | Med-Green | | - | Hybrid | Light-Purple | July into August | Benedict, Dr Ralph (Herb) & Walek, Kevin & The American Hosta Society | .2009 |
|
6
| 'Iszat U Emmerson' | Small | Med-Green | | - | Unknown | Unknown | - | Benedict, Dr Ralph (Herb) | --NR-- |
|
7
| 'Iwa Yara Moto' | Medium | Dark-Green | | - | Unknown | Unknown | - | Benedict, Dr Ralph (Herb) | --NR-- |
|