| No. | Cultivar Name | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
|
1
| 'Mad About Blue' | Medium | Blue/Green | - | - | Hybrid | Pale-Lavender | July | Zilis, Mark | .2009 |
|
2
| 'Madelon' | Giant | Blue/Green | | | Unknown | | | Gilligan, Madelon | --NR-- |
|
3
| 'Magic Moment' | Medium | Blue/Green | - | - | Unknown | - | June into July | Ward, Dr Dick & Ward, Jane | .2015 |
|
4
| 'Magnificent Michele' | Large | Blue/Green | - | - | Hybrid | Pale-Lavender | July | Ward, Dr Dick & Ward, Jane | .2005 |
|
5
| 'Majordomo' | Large | Blue/Green | - | - | Unknown | Near-White | August | Deckert, Emile & Deckert, Jane | .2004 |
|
6
| 'Man on the Moon' | - | Blue/Green | Streaked | White | TC Sport | - | - | Beilstein, Doug & Zilis, Mark | .2009 |
|
7
| 'Margie Weissenberger' | Miniature | Blue/Green | - | - | Hybrid | Pale-Lavender | June into July | Weissenberger, Henry | .1986 |
|
8
| 'Mean Joe Green' | Medium | Blue/Green | - | - | Hybrid | Med-Lavender | July into August | Zolock, Steve & Zolock, Sarah | .2008 |
|
9
| 'Mesa Verde' | Large | Blue/Green | - | - | Hybrid | Near-White | June into July | Ward, Dr Dick & Ward, Jane | .2004 |
|
10
| 'Metallica' | Medium | Blue/Green | - | - | Hybrid | Med-Lavender | August | Lachman, Wm & Lachman, Eleanor | .1991 |
|
11
| 'Midnight Dream' | Giant | Blue/Green | - | - | Unknown | - | - | Hackbarth, Robert | .2015 |
|
12
| 'Mirror Mirror' | Small | Blue/Green | - | - | Hybrid | - | - | Goodenough, Rick | --NR-- |
|
13
| 'Mississippi Mist' | Medium | Blue/Green | - | - | Unknown | - | - | Schulz, Ed | .2014 |
|
14
| 'Mississippi Mud' | Giant | Blue/Green | - | - | Hybrid | Pale-Lavender | July into August | Simmering, Ron | .2000 |
|
15
| 'Misty Waters' | Large | Blue/Green | - | - | Unknown | Near-White | July into August | Fisher, Eunice V. | .1986 |
|
16
| 'Mohegan' | Large | Blue/Green | - | - | Unknown | Near-White | June | Megos, Stan & Malloy, Alex | .1998 |
|
17
| 'Moongate Flying Saucer' | Small | Blue/Green | - | - | Hybrid | Pale-Lavender | July | Isaacs, Charles & Solberg, Robert | .1996 |
|
18
| 'Moonlight Sonata' | Large | Blue/Green | - | - | Hybrid | Pale-Lavender | August | Johnson, Greg | .2004 |
|
19
| 'Mrs Mouse Ears' | - | Blue/Green | - | - | Sport | Light-Purple | July | Unknown | --NR-- |
|
20
| 'My Friend Bertha' | Small | Blue/Green | - | - | Sport | Light-Purple | July | Walters Gardens | --NR-- |
|
21
| 'My Julie' | Medium | Blue/Green | Marginal | Yellow | Unknown | - | - | Schwarz, Jim | .2009 |
|