| No. | Cultivar | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
|
1
| 'Apple Jack' (Benedict) | Medium | Blue/Green | | | Hybrid | Unknown | Unknown | Benedict, Dr Ralph (Herb) | --NR-- |
|
2
| 'Black Jack Chew' | Medium | Dark-Green | | | TC Sport | Light-Purple | July | Schwarz, Jim | .2005 |
|
3
| 'Cracker Jack' | Small | Med-Green | Marginal | Yellow | TC Sport | Light-Purple | July to August | Zilis, Mark | .2011 |
|
4
| 'Jack and Margaret's Keynote' | Medium | Yellow | | | Hybrid | Med-Lavender | July to August | Owens, Clarence | .2001 |
|
5
| 'Jack Benii' | Small | Med-Green | Medial | Unknown | Unknown | Unknown | Unknown | Unknown | --NR-- |
|
6
| 'Jack Blue' | Large | Blue/Green | | | Sport | Near-White | June | Henjum, Paul | --NR-- |
|
7
| 'Jack Frost' | Medium | Med-Green | Marginal | White | Sport | Pale-Lavender | July | Minks, Eldren | .1983 |
|
8
| 'Jack of Diamonds' | Medium | Blue/Green | Marginal | Yellow | Hybrid | Near-White | July | Savory, Robert | .1985 |
|
9
| 'Jack Robbins' | Large | Med-Green | | | Unknown | Unknown | Unknown | Minks, Eldren | --NR-- |
|
10
| 'Jack's Discovery' | Medium | Med-Green | Marginal | Yellow | Sport | Med-Lavender | June to July | Freeman, Franc | .2009 |
|
11
| 'Jack's Gene' | Medium | Med-Green | | | Hybrid | Med-Lavender | July to August | Goodenough, Rick & Gilligan, Madelon | .2015 .2018 |
|
12
| 'Jumpin' Jack Flash' | Small | Med-Green | Medial | White | Unknown | Unknown | August to September | Avent, Tony | .2012 |
|
13
| 'Little Jack Frost' | Medium | Blue/Green | | | Unknown | Pale-Lavender | August to September | Benedict, Dr Ralph (Herb) & Benedict, Dorothy & Kuenster, Rod | .2010 |
|
14
| 'Mr Jack' | Medium | Med-Green | | | Unknown | Med-Lavender | June to July | Wrede, Arthur | --NR-- |
|
15
| 'Rosedale Grampa Jack' | Small | Light-Green | Medial | Yellow | Unknown | Light-Purple | July | Hadrava, Jerry | --NR-- |
|
16
| 'Rosedale Jack of Hearts' | Medium | Dark-Green | Streaked | Yellow | Hybrid | Med-Lavender | July | Hadrava, Jerry | .2000 |
|
17
| 'Rosedale Jack of Spades' | Medium | Med-Green | Streaked | Yellow | Hybrid | Med-Lavender | July to August | Hadrava, Jerry | .2000 |
|