| No. | Cultivar Name | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
|
1
| 'Katahdin' | - | - | Streaked | - | Hybrid | - | - | Moore, Jeff | --NR-- |
|
2
| 'Kempen Metallica' | Medium | Blue/Green | | | Unknown | Near-White | | Butaye, Patrick | --NR-- |
|
3
| 'Kettle Moraine' | Giant | Dark-Green | | | Unknown | Med-Lavender | June into July | Geske, Bob & Geske, Justin | .2022 |
|
4
| 'Key Lime Pie' (Lydell) | Medium | Light-Green | Marginal | Yellow | Unknown | | | Lydell, Ran | --NR-- |
|
5
| 'King Lizard' | Large | Dark-Green | - | - | Hybrid | Light-Purple | July | Rogers, Floyd | .2003 |
|
6
| 'King's Garland of Gold' | Small | Yellow | - | - | Unknown | - | - | King, Herb | --NR-- |
|
7
| 'King's Tribute' | Large | Dark-Green | Marginal | Yellow | Unknown | - | - | King, Herb | --NR-- |
|
8
| 'Kirkside Golden Parachute' | Giant | Yellow-Gold | | | Hybrid | Pale-Lavender | July | Hanna, Clarence | .2021 |
|
9
| 'Kwickdraw' | Large | Med-Green | | | Hybrid | Pale-Lavender | July into August | Kwick, Charles | .2022 |
|