| No. | Cultivar | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
|
1
| 'Misty Mountain' | | | | | Unknown | | | Unknown | |
|
2
| 'Mount Carmel' | Large | Med-Green | - | - | Unknown | Light-Purple | July | Wilkins, Dr Jim | --NR-- |
|
3
| 'Mount Daisen' | Large | Dark-Green | - | - | Nat-Sport | Pale-Lavender | June into July | Sugita, Hajime & Ruh, Peter & Ruh, Jean | .2005 |
|
4
| 'Mount Everest' | Medium | Med-Green | Marginal | White | Hybrid | Pale-Lavender | July | Dishon, Jim | .1996 |
|
5
| 'Mount Fuji' | Giant | Med-Green | - | - | Hybrid | Light-Purple | July | Wilkins, Dr Jim | .1989 |
|
6
| 'Mount Greylock' | - | - | - | - | Unknown | - | - | Unknown | --NR-- |
|
7
| 'Mount Hampshire' | Large | Med-Green | Marginal | White | Unknown | - | - | Lachman, Wm & Lachman, Eleanor | --NR-- |
|
8
| 'Mount Holyoke' | Medium | Med-Green | Marginal | Yellow | Hybrid | Near-White | July | Lachman, Wm & Lachman, Eleanor & Walek, Kevin & The American Hosta Society | .2009 |
|
9
| 'Mount Hope' | Large | Blue/Green | Marginal | Yellow | Unknown | - | - | Janet Starnes Nursery | .1992 |
|
10
| 'Mount Kip' | Giant | Blue/Green | - | - | Unknown | Light-Purple | July | Simpers, Lucille | --NR-- |
|
11
| 'Mount Kirishima' | - | - | - | - | Duplicate | - | - | Duplicate Name | --NR-- |
|
12
| 'Mount Nachi' | - | - | - | - | Unknown | - | - | Oudolf, Piet | --NR-- |
|
13
| 'Mount Olympus' | Large | Med-Green | - | - | Sport | Pale-Lavender | July | Malloy, Alex | --NR-- |
|
14
| 'Mount Royal' | Medium | Med-Green | - | - | Hybrid | Pure-White | August | Montreal Botanical Garden | .1983 |
|
15
| 'Mount Tom' | Large | Blue/Green | Marginal | White | Hybrid | Near-White | July | Lachman, Wm & Lachman, Eleanor | .1995 |
|
16
| 'Mount Tsukuba' | Large | Med-Green | - | - | Nat-Sport | Pale-Lavender | July | Unknown | --NR-- |
|
17
| 'Mount Vesuvius' | - | - | - | - | Unknown | - | - | Unknown | --NR-- |
|
18
| 'Mountain Dew' | Medium | Yellow | Marginal | White | TC Sport | Pale-Lavender | July | Zilis, Mark | .2003 |
|
19
| 'Mountain Haze' | Medium | Yellow | Marginal | Green | TC Sport | Pale-Lavender | July | Zilis, Mark | .1990 |
|
20
| 'Mountain Snow' | Large | Med-Green | Marginal | White | TC Sport | Pale-Lavender | July | Zilis, Mark | .1988 |
|
21
| 'Mountain Sunrise' | Large | Med-Green | - | - | TC Sport | Pale-Lavender | July | Zilis, Mark | .1999 |
|
22
| 'Mt. Sinai' | - | - | - | - | Unknown | - | - | Malloy, Alex | --NR-- |
|
23
| 'Top of Mount Fuji' | Large | Med-Green | - | - | TC Sport | Pale-Lavender | July | Fransen, Marco & Fransen, Joyce | --NR-- |
|