Cultivar NamePlant SizeLeaf ColorVariegationVar ColorOriginFlower ColorSeasonSourceRegistered
'Madison'LargeBlue/Green  HybridPale-LavenderJune into JulySanford, Matt.2011
'Madison Mine'LargeBlue/Green  HybridPale-LavenderJuly into AugustZilis, Mark & Schwarz, Jim & Karen.2011
'Magic Island'SmallYellowMarginalBlue-GreenNat-SportMed-LavenderJuly into AugustHeemskerk, Gerardus.2011
'Malabar'SmallMed-GreenMarginalYellowHybrid June into JulyZilis, Mark.2009
'Manchester by the Sea'    Unknown  Unknown--NR--
'Manhattan'MediumDark-Green  HybridLight-PurpleJulyBrincka, Wm & Petryszyn, Olga.1994
'Marathon'LargeMed-Green  HybridNear-WhiteJuly into AugustHerold, Roy--NR--
'Marble Head'LargeDark-GreenMarginalWhiteUnknown  Unknown--NR--
'Marblehead'    Duplicate  Duplicate Name 
'Marlu's Marshall'LargeBlue/Green  HybridNear-WhiteJune into JulyOverhiser, Martin.2014
'Marquette Park'MediumMed-GreenMarginalCreamy WhiteNat-SportLight-PurpleJuly into AugustZilis, Mark.2003
'Marrakech'SmallMed-Green  UnknownPale-Lavender Terpening, Kent--NR--
'Maui Blue Kitten'MediumBlue/Green  Hybrid  Vaughn, William--NR--
'Maui Blue Surf'MediumBlue/GreenStreakedYellowUnknown June into JulyElslager, Ed.2004
'Maui Moon' Med-GreenMarginalYellowUnknownPale-LavenderJulyUnknown--NR--
'Maui Rains'MediumDark-Green  Hybrid  Vaughn, William.1991
'Mauna Kea'MediumBlue/GreenStreakedWhiteHybrid  Moore, Jeff--NR--
'Mayville'MediumBlue/GreenMedialYellowNat-SportPale-LavenderJulyRuh, Peter.2003
'Memphis Blue'GiantBlue/Green  Hybrid  Petryszyn, Olga--NR--
'Menominee'LargeBlue/Green  Unknown  Wade, Van--NR--
'Mentor Gold'MediumYellowMarginalWhiteUnknownLight-PurpleAugustWayside Gardens & Ruh, Peter.1978
'Mesa Fringe'LargeDark-Green  Nat-SportPale-LavenderJulyRuh, Peter.1991
'Mesa Verde'LargeBlue/Green  HybridNear-WhiteJune into JulyWard, Dr Dick & Jane.2004
'Miami'LargeBlue/Green  HybridNear-WhiteJune into JulyWade, Van--NR--
'Michigan Blue'  - - -Duplicate - -Duplicate Name 
'Michigan Gold'MediumYellow  HybridPale-LavenderJulyBenedict, Dr Ralph (Herb).1984
'Michigan Honey'SmallMed-GreenMarginalYellowUnknown - -Unknown--NR--
'Michigan Sunshine'LargeYellow  Unknown  Benedict, Dr Ralph (Herb)--NR--
'Middle Ridge'MediumDark-Green  Nat-SportPale-Lavender Boonstra, Richard & Lewis, C. & Ruh, Peter.1979
'Midwest Blue'LargeBlue/Green  Nat-SportNear-WhiteJune into JulySummers, Alex--NR--
'Midwest Gold'LargeYellow  HybridNear-WhiteJune into JulyCooley, Violet.1969
'Midwest Green'LargeMed-Green  Nat-SportPale-LavenderJulyZilis, Mark--NR--
'Midwest Magic'LargeYellowMarginalBlue-GreenNat-SportLight-PurpleJune into JulyZilis, Mark.1999
'Midwest Majesty'GiantYellow  Nat-SportMed-LavenderJulyMinks, Eldren.1983
'Mill Bluff'  Streaked Unknown  Moore, Jeff--NR--
'Milwaukee Clipper'    Unknown  Unknown--NR--
'Minnesota Nice'MediumDark-GreenMedialYellowNat-SportMed-LavenderJulySnyder, Ron.1997
'Minnesota Weather'SmallMed-GreenMedialWhiteNat-SportPale-LavenderJuly into AugustKiehne, Myrtle.1980
'Minnesota Wild'LargeDark-GreenMarginalWhiteHybridMed-LavenderJuly into AugustCarlson, Monty & Julie.2013
'Miss Burma'LargeLight-GreenMarginalGreenUnknown - -Unknown--NR--
'Miss Poland'SmallMed-GreenStreakedYellowUnknown  Kijanska, Poll--NR--
'Miss Saigon'MediumDark-GreenMarginalYellowNat-SportPale-LavenderAugustHansen, Hans.1999
'Miss Tokyo'GiantMed-GreenMarginalWhiteHybridPale-LavenderJuneHansen, Hans.2004
'Mississippi Delta'GiantBlue/Green  HybridPale-LavenderJune into JulyPetryszyn, Olga.1998
'Mississippi Gold'GiantYellow  HybridPale-LavenderJuly into AugustSimmering, Ron.2003
'Mississippi Mist'MediumBlue/Green  Unknown  Schulz, Ed.2014
'Mississippi Mud'GiantBlue/Green  HybridPale-LavenderJuly into AugustSimmering, Ron.2000
'Mississippi River'LargeLight-Green  HybridPure-WhiteJune into JulyBeilstein, Doug & Malloy, Alex.2005
'Missouri River'SmallBlue/Green  HybridNear-WhiteJulyBeilstein, Doug & Malloy, Alex.2005
'Monashee Blue Cup'SmallBlue/Green  Unknown  Montgomery, John--NR--
'Montego Bay'    Unknown  Unknown--NR--
'Montreal'MediumMed-Green  HybridLight-PurpleAugustLe Jardin de bontanique de Montreal.1983
'Montreal Blue Ice Storm'GiantBlue/Green  HybridPale-LavenderJune into JulyWade, Van.2007
'Montreal White'  - - -Duplicate - -Duplicate Name 
'Monument Circle'MediumLight-GreenMedialWhiteUnknown June into JulyCrockett, Clyde.1995
'Moon over Lake Erie'MediumDark-GreenMarginalYellowNat-SportPale-LavenderJulyRuh, Peter.2005
'Moscow Blue'LargeBlue/Green  UnknownNear-WhiteJuly into AugustArett, Anne & AHS.1986
'Mosel'MediumMed-Green  UnknownMed-Lavender Klose, Heinz & Ruh, Peter & Jean.2008
'Mossy Cascades'LargeDark-GreenStreakedWhiteUnknown  Unknown--NR--
'Moulin Rouge'MediumDark-GreenMedialWhiteNat-SportPale-LavenderJuly into AugustVan Eechaute, Danny.2010
'Mount Carmel'LargeMed-Green  UnknownLight-PurpleJulyWilkins, Dr Jim--NR--
'Mount Daisen'LargeDark-Green  HybridPale-LavenderJune into JulySugita, Hajime & Ruh, Peter & Jean.2005
'Mount Everest'MediumMed-GreenMarginalWhiteHybridPale-LavenderJulyDishon, Jim.1996
'Mount Fuji'GiantMed-Green  HybridLight-PurpleJulyWilkins, Dr Jim.1989
'Mount Greylock'    Unknown  Unknown--NR--
'Mount Hampshire'LargeMed-GreenMarginalWhiteUnknown  Lachman, Wm & Eleanor--NR--
'Mount Holyoke'MediumMed-GreenMarginalYellowHybridNear-WhiteJulyLachman, Wm & Eleanor & Walek, Kevin.2009
'Mount Hood'MediumDark-GreenMarginalGreenUnknown  Minks, Eldren.1983
'Mount Hope'LargeBlue/GreenMarginalYellowUnknown  Minks, Eldren.1992
'Mount Kip'GiantBlue/Green  UnknownLight-PurpleJulySimpers, Lucille--NR--
'Mount Kirishima'  - - -Duplicate - -Duplicate Name 
'Mount Nachi'    Unknown  Oudolf, Piet--NR--
'Mount Olympus'LargeMed-Green  Nat-SportPale-LavenderJulyMalloy, Alex--NR--
'Mount Royal'MediumMed-Green  HybridPure-WhiteAugustLe Jardin de bontanique de Montreal.1983
'Mount Vesuvius'    Unknown  Unknown--NR--
'Mt. Sinai'    Unknown  Malloy, Alex--NR--
'Mulling Marlborough'SmallMed-GreenStreakedWhiteUnknown  Moore, Jeff--NR--
'My Yuma'LargeDark-Green  UnknownMed-Lavender Livingston, Ron--NR--
'Myerscough Magic'LargeBlue/GreenMedialWhiteNat-SportNear-WhiteJune into JulyBowden, Roger--NR--
'Mystic'SmallDark-GreenStreakedSpecklesHybrid  Malloy, Alex.2000
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