| No. | Cultivar Name | Plant Size | Leaf Color | Variegation | Var Color | Origin | Season | Source | Registered |
|
1
| 'Keikoku' | Small | Med-Green | Streaked | White | Nat-Sport | August to September | Unknown | --NR-- |
|
2
| 'Kempen Sorbet' | Medium | Yellow | | | Nat-Sport | August to September | Butaye, Patrick | --NR-- |
|
3
| 'Kifu Hime' | Large | Med-Green | - | - | Sport | August to September | Longwood Gardens | --NR-- |
|
4
| 'Kifukurin Hyuga' | Small | Blue/Green | Marginal | Yellow | Nat-Sport | August to September | Unknown & Ruh, Peter | .2002 .2018 |
|
5
| 'Kifukurin Ko Mame' | Miniature | Med-Green | Marginal | White | Sport | August to September | Watanabe, Kenji & Ruh, Peter | .2002 .2018 |
|
6
| 'Kifukurin', H. kikutii | Medium | Med-Green | Marginal | Yellow | Duplicate | August to September | Unknown | --NR-- |
|
7
| 'Kim Sue' | Medium | Med-Green | Streaked | Yellow | Unknown | August to September | Freeman, Franc | .2009 |
|
8
| 'Kinakafu Aki' (Japan 1) | Medium | Med-Green | - | - | Sport | August to September | Unknown | --NR-- |
|
9
| 'Kinakafu Aki' (Japan 2) | - | Med-Green | Medial | White | Sport | August to September | Unknown | --NR-- |
|
10
| 'Kinba' | Large | Med-Green | - | - | Hybrid | August to September | Watanabe, Kenji & Walek, Kevin & The American Hosta Society | .2009 |
|
11
| 'Kinbotan' | Miniature | Med-Green | Marginal | Yellow | Sport | August to September | Unknown & Ruh, Peter | .2002 .2018 |
|
12
| 'Kinbuchi Tachi' | Large | Dark-Green | Marginal | White | Sport | August to September | Unknown & Ruh, Peter | .2002 .2018 |
|
13
| 'King Tucker' | Giant | Dark-Green | - | - | Hybrid | August to September | Kwick, Charles | .2016 |
|
14
| 'Kinokawa Unazuki' | Medium | Med-Green | Streaked | Speckles | Sport | August to September | Unknown | --NR-- |
|
15
| 'Kinu Akari' | Medium | Dark-Green | - | - | Sport | August to September | Unknown | --NR-- |
|
16
| 'Kinugawa Nishiki Iwa' | Small | Med-Green | Medial | Yellow | Sport | August to September | Suzuki, Kichigoro | --NR-- |
|
17
| 'Kinuito Gumo' | Medium | Dark-Green | Marginal | White | Sport | August to September | Unknown | --NR-- |
|
18
| 'Kinu-no-yuki' | Medium | Med-Green | Medial | White | Hybrid | August to September | Unknown | --NR-- |
|
19
| 'Kishiro-nakafu Hyūga' | Medium | Dark-Green | - | - | Sport | August to September | Unknown | --NR-- |
|
20
| 'Kishiro-nakafu Unazuki' | Medium | Med-Green | - | - | Sport | August to September | Unknown | --NR-- |
|
21
| 'Kishiro-shimafu Unazuki' | Medium | Med-Green | - | - | Sport | August to September | Unknown | --NR-- |
|
22
| 'Kiss and Surrender' | Medium | Light-Green | - | - | Hybrid | August to September | Kwick, Charles | .2018 |
|
23
| 'Koufuu' | Medium | Dark-Green | Streaked | White | Sport | August to September | Unknown | --NR-- |
|