| Medial (Center) Variegation | Plant Size | Leaf Color | Var Color | Origin | Season | Source | Registered |
| 'Ice Age' | Medium | Dark-Green | White | Unknown | August to September | Schmid, Tom | .2002 |
| 'Ice Castle' | Small | Dark-Green | White | Sport | June | Hansen, Hans | .2006 |
| 'Ice King' | Small | Dark-Green | White | Sport | July | Kwick, Charles | .2019 |
| 'Iceland' | Medium | Med-Green | White | Hybrid | - | Smith, Eric | --NR-- |
| 'Ichi-ban' | Miniature | Med-Green | White | Hybrid | July | Hirose, Yoshimichi & Zilis, Mark | .2003 |
| 'Icicle' | Small | Dark-Green | White | Sport | June into July | Fischer, Dr Ullrich | --NR-- |
| 'Icy Fog' | Medium | Dark-Green | White | Sport | June into July | Wilson, Chris | --NR-- |
| 'Ilona' | Large | Blue/Green | White | Sport | July into August | Heemskerk, Gerardus | .2011 |
| 'Imperial Dragon' | Large | Dark-Green | White | Sport | June into July | Schwarz, Jim | .2011 |
| 'Imperial Palace' | Large | Dark-Green | Yellow | Hybrid | June into July | Ward, Dr Dick & Ward, Jane | .2009 |
| 'Indecent Island' | Miniature | Med-Green | Yellow | Sport | - | Philips, Hugo | --NR-- |
| 'Indian Feather' | Small | Med-Green | White | Hybrid | July | Owens, Clarence | .1992 |
| 'Indy Finish Line' | Medium | Med-Green | Creamy White | Hybrid | July into August | Whitmore, Bob & Goodwin, Randy | .2005 |
| 'Instant Gratification' | Small | Light-Green | White | Hybrid | August | Beilstein, Doug & Beilstein, Mardy | .2013 |
| 'Iowa Hawkeye' | Medium | Dark-Green | Yellow | Sport | July into August | McBurney, Jim & McBurney, Lois & Kuenster, Rod | .2006 |
| 'Irene' | Large | Med-Green | White | Hybrid | - | Unknown | --NR-- |
| 'Iris Frazier' | Large | Blue/Green | Yellow | Sport | June into July | Solberg, Robert | .2006 |
| 'Irish Breeze' | Medium | Med-Green | Yellow | Sport | June | Scolnik, Patricia & Walek, Kevin | .2009 |
| 'Irish Mist' | Small | Dark-Green | White | Hybrid | July | Savory, Robert | .1994 |
| 'Island Breeze' | Medium | Med-Green | Yellow | TC Sport | July into August | Diaz, Ariel & Hansen, Hans & Walters Gardens | .2014 |
| 'Island Charm' | Small | Med-Green | White | Hybrid | July | Rassmussen, George & Malloy, Alex | .1997 |
| 'Island Queen' | Small | Med-Green | White | Unknown | June into July | Rassmussen, George | --NR-- |
| 'It's My Party' | Small | Med-Green | White | Unknown | - | Lydell, Ransom | --NR-- |
| 'Itty Bitty' | Miniature | Dark-Green | White | Sport | June into July | Zilis, Mark | .2010 |
| 'Iva Delight' | Medium | Med-Green | White | Sport | July into August | Lisik, Philip | .2003 |
| 'Ivory Pixie' | Miniature | Med-Green | White | Sport | July | Seaver, Mildred | .1982 |
| 'Ivory Queen' | Medium | Blue/Green | White | Sport | August to September | Walters Gardens | .2014 |
| 'Ivory Snow' | Small | Dark-Green | White | Unknown | July into August | Goodwin, Randy | .2019 |
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