| Cultivar Name | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
| 'I Spy' | Small | Med-Green | Streaked | Yellow | Unknown | - | - | Malloy, Alex | --NR-- |
| 'Ibis' | - | - | - | - | Unknown | - | - | Malloy, Alex | --NR-- |
| 'Iceman Cometh' | Small | Dark-Green | Streaked | Yellow | Unknown | - | - | Malloy, Alex | --NR-- |
| 'Impressionist' | Small | Med-Green | Marginal | White | Unknown | - | - | Malloy, Alex | --NR-- |
| 'In the Chips' | Large | Dark-Green | Marginal | Yellow | Sport | Pale-Lavender | June | Bennerup, Pierre & Malloy, Alex | .2000 |
| 'Intaglio' | Small | Med-Green | Marginal | Yellow | Hybrid | Light-Purple | July | Malloy, Alex | --NR-- |
| 'Io' | Small | Yellow | - | - | Unknown | - | - | Malloy, Alex | --NR-- |
| 'Isis' | Small | Yellow | Streaked | White | Sport | Near-White | August | Malloy, Alex | --NR-- |
| 'Island Charm' | Small | Med-Green | Medial | White | Hybrid | Light-Purple | July | Rassmussen, George & Malloy, Alex | .1997 |
| 'Ivanhoe' | Medium | Med-Green | Marginal | White | Hybrid | - | - | Beilstein, Doug & Malloy, Alex | --NR-- |
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