| No. | Cultivar Name | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
|
1
| 'I'm So Blue' | Large | Blue/Green | | - | Unknown | Near-White | June | Schwarz, Jim | .1999 |
|
2
| 'Madelynn' | Large | Blue/Green | | - | Unknown | Pure-White | June | Darr, D. & Wade, Van | .2007 |
|
3
| 'Maekawa' | Medium | Med-Green | | - | Sport | Pale-Lavender | July into August | Klehm, Roy & Walek, Kevin & The American Hosta Society | .2009 |
|
4
| 'Magic Colors' | Small | Med-Green | Streaked | White | Hybrid | Light-Purple | July | Beilstein, Doug & Malloy, Alex | .2005 |
|
5
| 'Magnificent Michele' | Large | Blue/Green | | - | Hybrid | Pale-Lavender | July | Ward, Dr Dick & Ward, Jane | .2005 |
|
6
| 'Maize and Blue' | Medium | Blue/Green | Streaked | Yellow | Unknown | Unknown | Unknown | Wilkins, Dr Jim | .2000 |
|
7
| 'Major Tom' | Medium | Dark-Green | | - | Unknown | Unknown | - | Scheer, Alttara | --NR-- |
|
8
| 'Mammoth Ears' | Giant | Blue/Green | | - | Hybrid | Unknown | June into July | Kruer, George | .2009 |
|
9
| 'Manhattan' | Medium | Dark-Green | | - | Hybrid | Light-Purple | July | Brincka, Wm & Petryszyn, Olga | .1994 |
|
10
| 'Marie Robillard' | Large | Blue/Green | Marginal | Yellow | Unknown | Near-White | July | Fafard, Serge | --NR-- |
|
11
| 'Marilyn's Mystery' | Medium | Blue/Green | Marginal | Yellow | Unknown | Unknown | - | Unknown | --NR-- |
|
12
| 'Maruba Iwa' | Small | Med-Green | | - | Sport | Pale-Lavender | September | Unknown & Walek, Kevin & The American Hosta Society | .2009 .2018 |
|
13
| 'Mason' | Large | Light-Green | | - | Sport | Pale-Lavender | July into August | Unknown | --NR-- |
|
14
| 'Mastodon' | Large | Blue/Green | | - | Hybrid | Near-White | June into July | Vaughn, Kevin & Walek, Kevin & The American Hosta Society | .2009 |
|
15
| 'Matilda Jean' | Medium | Med-Green | | - | Unknown | Unknown | - | Unknown | --NR-- |
|
16
| 'Maui Dark Lava' | Medium | Dark-Green | | - | Unknown | Unknown | Unknown | Vaughn, William | --NR-- |
|
17
| 'Maxine' | Large | Yellow | | - | Unknown | Unknown | - | Armstrong, Maxine | --NR-- |
|
18
| 'Mean Joe Green' | Medium | Blue/Green | | - | Hybrid | Med-Lavender | July into August | Zolock, Steve & Zolock, Sarah | .2008 |
|
19
| 'Mellow Yellow' | Large | Yellow-Gold | | - | Unknown | Near-White | July into August | Benedict, Dr Ralph (Herb) | .2010 |
|
20
| 'Menominee' | Large | Blue/Green | | - | Unknown | Unknown | Unknown | Wade, Van | --NR-- |
|
21
| 'Meredith Faith' | Medium | Light-Green | | - | Unknown | Unknown | August | Cullerton, Walter | --NR-- |
|
22
| 'Metallic Sheen' | Large | Dark-Green | | - | Hybrid | Pale-Lavender | July into August | Zilis, Mark | .1999 |
|
23
| 'Michigan Sunshine' | Large | Yellow | | - | Unknown | Unknown | - | Benedict, Dr Ralph (Herb) | --NR-- |
|
24
| 'Midas Touch' | Large | Yellow | | - | Hybrid | Near-White | July | Aden, Paul | .1978 |
|
25
| 'Midnight at the Oasis' | Medium | Dark-Green | Medial | White | Sport | Med-Lavender | July into August | Naylor Creek Nursery & The American Hosta Society | .2019 |
|
26
| 'Midnight Hour' | Giant | Blue/Green | | - | Unknown | Pale-Lavender | June | Ward, Dr Dick & Ward, Jane | .2009 |
|
27
| 'Midnight Oil' | Medium | Dark-Green | | - | Hybrid | Light-Purple | July | Stegeman, Bev & Stegeman, Dave | .2004 |
|
28
| 'Midnight Sun' | Large | Yellow | | - | Hybrid | Light-Purple | June | Ward, Dr Dick & Ward, Jane | .1996 |
|
29
| 'Midwest Gold' | Large | Yellow | | - | Hybrid | Near-White | June into July | Cooley, Violet | .1969 |
|
30
| 'Midwest Magic' | Large | Yellow | Marginal | Blue-Green | Sport | Light-Purple | June into July | Zilis, Mark | .1999 |
|
31
| 'Mike Shadrack' | Medium | Blue/Green | Marginal | Yellow | Hybrid | Near-White | June into July | Kuk, Bob | .2001 |
|
32
| 'Mike's Peak' | Large | Blue/Green | | - | Hybrid | Unknown | - | Summers, Alex | --NR-- |
|
33
| 'Millennium' | Giant | Blue/Green | | - | Hybrid | Pale-Lavender | June into July | Wilkins, Dr Jim & Wilkins, Jill | .1995 |
|
34
| 'Ming Jade' | Large | Med-Green | | - | Unknown | Pale-Lavender | July | Syre-Herz, Ursula | .1987 |
|
35
| 'Mischief' | Large | Blue/Green | | - | Unknown | Near-White | June | Duback, Robyn | .1998 |
|
36
| 'Miss Halley' | Medium | Blue/Green | Medial | Yellow | Sport | Pale-Lavender | July into August | Jones, Leonard | .2003 |
|
37
| 'Mississippi Delta' | Giant | Blue/Green | | - | Hybrid | Pale-Lavender | June into July | Petryszyn, Olga | .1998 |
|
38
| 'Mister Watson' | Large | Light-Green | Marginal | Green | Sport | Near-White | June | Jones, Leonard | .1999 |
|
39
| 'Misty' (Schwarz) | Medium | Blue/Green | Marginal | White | Hybrid | Near-White | June | Schwarz, Jim | --NR-- |
|
40
| 'Mogul' | Medium | Dark-Green | | - | Hybrid | Pale-Lavender | July into August | Savory, Robert | .1988 |
|
41
| 'Mohawk' | Large | Med-Green | | - | Unknown | Unknown | Unknown | Wade, Van | --NR-- |
|
42
| 'Mommy's Little Monster' | Medium | Blue/Green | | - | Hybrid | Unknown | - | Stadden, Josh | --NR-- |
|
43
| 'Mom's Girl' | Large | Dark-Green | Streaked | Yellow | Hybrid | Unknown | - | Elslager, Ed | .2003 |
|
44
| 'Money Honey' | Medium | Yellow | | - | Unknown | Unknown | July into August | Malloy, Alex | .2003 |
|
45
| 'Monkey Business' | Medium | Med-Green | Marginal | Yellow | Sport | Med-Lavender | July | Fransen, Marco | --NR-- |
|
46
| 'Mood Indigo' | Large | Blue/Green | | - | Hybrid | Pure-White | June into July | Ward, Dr Dick & Ward, Jane | .1996 |
|
47
| 'Moonlight Sonata' | Large | Blue/Green | | - | Hybrid | Pale-Lavender | August | Johnson, Greg | .2004 |
|
48
| 'Mount Olympus' | Large | Med-Green | | - | Sport | Pale-Lavender | July | Malloy, Alex | --NR-- |
|
49
| 'Mouse Madness' | Miniature | Blue/Green | Marginal | White | Sport | Unknown | July into August | Solberg, Robert | .2020 |
|
50
| 'Mr Big' | Giant | Dark-Green | | - | Unknown | Near-White | July | Walden West Nursery & Ruh, Peter & Ruh, Jean | .2010 |
|
51
| 'Mr Z' | Medium | Blue/Green | | - | Hybrid | Near-White | August September October | Zilis, Mark & Schwarz, Jim & Schwarz, Karen | .2014 |
|
52
| 'Mr. Ed' | Large | Blue/Green | | - | Unknown | Unknown | - | Elslager, Ed | --NR-- |
|
53
| 'Mr. Spock' | Large | Blue/Green | Marginal | Yellow | Sport | Near-White | June into July | Brill, Kirk | --NR-- |
|
54
| 'Muriel Seaver Brown' | Large | Blue/Green | | - | Hybrid | Pale-Lavender | June into July | Seaver, Mildred | .1984 |
|
55
| 'My Friend Nancy' | Large | Med-Green | Marginal | Greenish White | Hybrid | Pale-Lavender | July into August | Benedict, Dr Ralph (Herb) & Krul, Nancy | .1991 |
|
56
| 'Mystery Mom' | Large | Blue/Green | Streaked | Speckles | Unknown | Unknown | July into August | Elslager, Ed | .2005 |
|