| No. | Cultivar Name | Source | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Registered |
|
1
| 'Ice Age Trail' | Zilis, Mark | Large | Blue/Green | Streaked | Yellow | TC Sport | Near-White | June | .2003 |
|
2
| 'Ice Flow' | Wols, Dan | Medium | Blue/Green | | | Unknown | | | --NR-- |
|
3
| 'Innisglow' | Zilis, Mark & Walek, Kevin | Medium | Yellow | - | - | TC Sport | Pale-Lavender | June into July | .2009 |
|
4
| 'Innisjade' | Zilis, Mark & Walek, Kevin | Medium | Dark-Green | - | - | TC Sport | Pale-Lavender | June into July | .2009 |
|
5
| 'Intrinsic Twisted Sister' | Horvath, Brent | Large | Med-Green | | | Unknown | | | --NR-- |
|
6
| 'Itty Bitty' | Zilis, Mark | Miniature | Dark-Green | Medial | White | Sport | Light-Purple | June into July | .2010 |
|
7
| 'Itty Blue' | Zilis, Mark | Small | Blue/Green | - | - | TC Sport | Pale-Lavender | July into August | .2011 |
|
8
| 'Itty Gold' | Zilis, Mark | Small | Yellow | - | - | Sport | - | June into July | .2010 |
|
9
| 'Itty Rainbow' | Zilis, Mark | Small | Yellow | Streaked | Green | Sport | Pale-Lavender | June into July | .2012 |
|
10
| 'Ivory Necklace' | Zilis, Mark | Medium | Med-Green | Marginal | White | TC Sport | Light-Purple | July | .2003 |
|