| No. | Cultivar Name | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
|
1
| 'Jack Sprat' | Large | Dark-Green | Marginal | Light Green | Sport | Pure-White | July | Kuntz, J. | .2018 |
|
2
| 'Jack's Discovery' | Medium | Med-Green | Marginal | Yellow | Sport | Med-Lavender | June into July | Freeman, Franc | .2009 |
|
3
| 'Jawbreaker' | Medium | Blue/Green | - | - | Sport | Med-Lavender | - | Van den Top, Jan | --NR-- |
|
4
| 'Jay B. Abendroth' | Large | Blue/Green | - | - | Hybrid | Near-White | July into August | Chamberlain, Steve | .2001 |
|
5
| 'Jeff' | Large | Blue/Green | - | - | Unknown | Near-White | July | Wade, Van | --NR-- |
|
6
| 'Jet Black' | Large | Blue/Green | - | - | Hybrid | Near-White | July | Beilstein, Doug & Beilstein, Mardy | .2017 |
|
7
| 'Joby' | Medium | Blue/Green | | | Hybrid | Near-White | June into July | Frederking, Ann | .2022 |
|
8
| 'John Diamond' | Medium | Dark-Green | - | - | Unknown | - | June into August | Zolock, Steve & Zolock, Sarah | .2009 |
|
9
| 'John James' | Large | Dark-Green | - | - | Unknown | Pure-White | July into August | Zolock, Steve & Zolock, Sarah | .2007 |
|
10
| 'Joshu Iwa' | Small | Med-Green | - | - | Hybrid | - | - | Sugita, Hajime | --NR-- |
|
11
| 'Jumbo Mouse Ears' | Miniature | Blue/Green | - | - | Sport | Pale-Lavender | June into July | Philips, Hugo | .2011 |
|
12
| 'Justin Tyme' | Giant | Dark-Green | - | - | Hybrid | Near-White | June into July | Hicks, Gerry | .2017 |
|