| No. | 5-Star Hosta Images | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
|
1
| 'Kalamazoo' | Medium | Dark-Green | Marginal | White | Sport | Med-Lavender | July into August | Linneman, Jeroen | .2008 |
|
2
| 'Kara' | - | Unknown | | - | Duplicate | Unknown | - | Horinaka | --NR-- |
|
3
| 'Katherine Lewis' | Small | Yellow | Marginal | Blue-Green | Hybrid | Pale-Lavender | July into August | Lewis, Alan | --NR-- |
|
4
| 'Key Lime Pie' (Hansen) | Medium | Med-Green | Marginal | Yellow | Sport | Light-Purple | July | Hansen, Hans | .2003 |
|
5
| 'Key West' | Giant | Yellow | | - | Hybrid | Near-White | June into July | Petryszyn, Olga | .1999 |
|
6
| 'Kifukurin Ko Mame' | Miniature | Med-Green | Marginal | White | Sport | Light-Purple | August to September | Watanabe, Kenji & Ruh, Peter | .2002 .2018 |
|
7
| 'King Tut' | Large | Yellow | | - | Hybrid | Near-White | June into July | Harshbarger, Gretchen | .1981 |
|
8
| 'Kingwood Center' | Medium | Blue/Green | Medial | Yellow | Sport | Pure-White | July | Applegate, Charles & Kingwood Center | .1993 .2018 |
|
9
| 'Kiwi Black Magic' | Large | Dark-Green | | - | Hybrid | Light-Purple | July into August | Sligh, Barry | .1999 |
|
10
| 'Kiwi Ingenuity' | Giant | Blue/Green | Streaked | Yellow | Sport | Near-White | June into July | Sligh, Barry | --NR-- |
|
11
| 'Kiwi Kaniere Gold' | Large | Yellow | | - | Sport | Pale-Lavender | July into August | Sligh, Barry | .1999 |
|
12
| 'Kiwi Parasol' | Large | Med-Green | | - | Sport | Near-White | June | Sligh, Barry | .1999 |
|
13
| 'Kiwi Skyscraper' | Large | Blue/Green | | - | Hybrid | Pale-Lavender | July into August | Sligh, Barry | --NR-- |
|
14
| 'Kiwi Treasure Trove' | Large | Med-Green | Marginal | Creamy White | Sport | Pale-Lavender | July | Redgrove, Hugh & Sligh, Barry | .1999 |
|
15
| 'Kofuki Iwa' | | - | | - | Duplicate | - | | Duplicate Name | --NR-- |
|
16
| 'Komodo Dragon' | Large | Med-Green | | - | Hybrid | Pale-Lavender | June | Seaver, Mildred | .2004 |
|
17
| 'Korean' | Small | Med-Green | | - | Sport | Light-Purple | July | Unknown | --NR-- |
|
18
| 'Korean Snow' | Medium | Med-Green | Streaked | Creamy White | Hybrid | Light-Purple | August | Niche Gardens & Solberg, Robert | .1999 |
|
19
| 'Krossa Regal' | Giant | Blue/Green | | - | Hybrid | Pale-Lavender | July into August | Krossa, Gus & Summers, Alex | .1980 |
|