| No. | Cultivar Name | Source | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Registered |
|
1
| 'Karen' | Olson, Dr Robert | Medium | Med-Green | Marginal | Creamy White | Unknown | Pale-Lavender | July | .1999 |
|
2
| 'Kate's Legacy' | Rahe, Lora | Miniature | Dark-Green | Streaked | White | Sport | Med-Lavender | June into July | .2010 |
|
3
| 'Kathy-O' | O'Donnell, Donald | Medium | Med-Green | Streaked | White | Sport | Med-Lavender | July | .1994 |
|
4
| 'Kenny's Bob' | Frederick, Ken & Peterzen, P. | Small | Light-Green | Marginal | White | Unknown | Med-Lavender | June into July | .2012 |
|
5
| 'Key Lime Pie' (Hansen) | Hansen, Hans | Medium | Med-Green | Marginal | Yellow | Sport | Light-Purple | July | .2003 |
|
6
| 'King's Ransom' | Dean, Don | Medium | Light-Green | - | - | Hybrid | Near-White | July into August | .1999 |
|
7
| 'Kinky Boots' | Dean, Don | Medium | Blue/Green | Marginal | White | Sport | Pale-Lavender | July into August | .2014 |
|
8
| 'Kira' | Maroushek, Lillian | Large | Blue/Green | Marginal | Yellow | Unknown | Pale-Lavender | July | .1999 |
|
9
| 'Koneko' | Olson, Dr Robert | Large | Med-Green | Marginal | White | Unknown | Light-Purple | July | .1999 |
|
10
| 'Krinkled Joy' | Arett, Anne & Armstrong, Maxine & The American Hosta Society | Large | Blue/Green | - | - | Hybrid | Near-White | June into July | .1986 |
|
11
| 'Krista' | Olson, Dr Robert | Small | Med-Green | Marginal | Yellow | Sport | Pale-Lavender | July | .1999 |
|