| Cultivar Name | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Registered |
| 'I Got Rhythm' | Large | Med-Green | Marginal | Yellow | Hybrid | - | June into July | .2009 |
| 'Ice Palace' | Medium | Blue/Green | - | - | Hybrid | Near-White | June | .2003 |
| 'Imperial Palace' | Large | Dark-Green | Medial | Yellow | Hybrid | Pale-Lavender | June into July | .2009 |
| 'Irish Eyes' | Medium | Med-Green | Marginal | Creamy White | Hybrid | Pale-Lavender | - | .1999 |
| 'Irish Fling' | Small | Med-Green | Marginal | Yellow | Hybrid | Near-White | July | .2012 |
| 'Irish Jig' | Medium | Dark-Green | Marginal | White | Hybrid | Near-White | July into August | .2012 |
| 'Ivory Tower' | Giant | Yellow | - | - | Hybrid | Near-White | June into July | .1996 |
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