Cultivar NamePlant SizeOriginFlower ColorSeasonSourceRegistered
'M. Owen Papuga'LargeHybridNear-WhiteAugustChamberlain, Steve.2003
'Macazoo'GiantUnknown--Unknown--NR--
'Machete'MediumSportPure-WhiteJulySolberg, Robert.2002
'Macho'MediumUnknownDeep-PurpleAugustLivingston, Ron--NR--
'Mackwoods'MediumUnknown--Mack, Carl--NR--
'Maekawa'MediumSportPale-LavenderJuly into AugustKlehm, Roy & Walek, Kevin.2009
'Maekawa Form', H. venustaMiniatureSportMed-LavenderJune into JulyMaekawa, Dr Fumio--NR--
'Maggie's Angel'LargeUnknown--Unknown--NR--
'Mai Tai'LargeSport--Unknown--NR--
'Majestic Glow'MediumUnknown--Anderson, Kenneth.1982
'Major Tom'MediumUnknown--Scheer, Alttara--NR--
'Makafu Kiyosumi'SmallSportPure-WhiteJune into JulyUnknown--NR--
'Makin Music'LargeUnknown-June into JulyUnknown--NR--
'Malakite Ruffles'LargeUnknown--Unknown--NR--
'Mama Bear'LargeHybrid--Schmidt, Bevie.2009
'Mañana'LargeUnknownNear-White-Tompkins, Chet & Ruh, Peter & Ruh, Jean.2001
'Mandelbrot Set'GiantHybrid-JuneNyikos, Frank.2011
'Manfred's Delight'GiantUnknownNear-WhiteJuneMondt, Manfred--NR--
'Mango Salsa'MediumHybridPale-Lavender-Solberg, Robert.2011
'Manhattan'MediumHybridLight-PurpleJulyBrincka, Wm & Petryszyn, Olga.1994
'Maraschino Cherry'MediumTC SportLight-PurpleJuly into AugustZilis, Mark.1999
'Marathon'LargeHybridNear-WhiteJuly into AugustHerold, Roy--NR--
'March for Life'SmallHybridLight-PurpleAugustSnyder, Ron.2001
'Margaret'MiniatureUnknownLight-PurpleAugustStone, David & Ruh, Peter.1987
'Margey'MiniatureUnknownDeep-PurpleJulyBanyai, Pauline & Helsley, Calvin.1998
'Marie Curie'LargeUnknownPale-LavenderJulyHensen, Karel & Ruh, Peter.2002
'Mark's Place'MediumUnknown--Beilstein, Doug & Zilis, Mark--NR--
'Marlu's Carrie Lynn'SmallHybridMed-LavenderJuly into AugustOverhiser, Martin & Stegeman, Bev & Stegeman, Dave.2014
'Marlu's Eliza Jane'SmallHybridMed-LavenderAugustOverhiser, Martin.2014
'Marlu's Elliot'MiniatureHybridPale-LavenderAugustOverhiser, Martin.2014
'Marlu's Evelyn Lucile'MiniatureHybridPale-LavenderJuly into AugustOverhiser, Martin & Stegeman, Bev & Stegeman, Dave.2014
'Marlu's Marla Jean'MiniatureHybridPale-LavenderJuly into AugustOverhiser, Martin.2014
'Marlu's Ronald Wayne'MediumHybridMed-LavenderJuly into AugustOverhiser, Martin.2014
'Maroon'LargeUnknown--Summers, Alex--NR--
'Marquis'MediumHybridLight-PurpleJulySavory, Robert.1982
'Marrakech'SmallUnknownPale-LavenderJulyTerpening, Kent & The American Hosta Society.2019
'Martin Van Buren'MediumHybridPale-LavenderSeptemberSugita, Hajime & Ruh, Peter.2005
'Martini'SmallHybridLight-PurpleJulyZilis, Mark.2009
'Maruba Iwa'SmallSportPale-LavenderSeptemberUnknown & Walek, Kevin.2009 .2018
'Maruba Tachi'MediumSportLight-PurpleAugustUnknown--NR--
'Masamune'MediumSportLight-PurpleAugust to SeptemberUnknown--NR--
'Mascara'SmallUnknown--Herold, Roy--NR--
'Mason'LargeSportPale-LavenderJuly into AugustUnknown--NR--
'Matilda Jean'MediumUnknown--Unknown--NR--
'Matthew Braedon'MediumUnknownMed-LavenderSeptember to OctoberZolock, Steve & Zolock, Sarah.2006
'Matthew J. Walton'LargeHybridLight-PurpleJuly into AugustChamberlain, Steve.2001
'Maui Dark Lava'MediumUnknown--Vaughn, William--NR--
'Maui Hana'LargeHybrid-JulyVaughn, William.1991
'Maui Limes'SmallUnknown--Vaughn, William--NR--
'Maui Rains'MediumHybrid--Vaughn, William.1991
'Maurice Mason'MiniatureUnknown-July into AugustMason, Maurice & Goodwin, Randy.2013
'Mawashibiki'SmallHybridPale-LavenderAugust to SeptemberKlapwijk, Pieter--NR--
'May Moon'MediumHybridLight-PurpleAugustWard, Dr Dick & Ward, Jane.1999
'Maya Kingsnake'MediumUnknownLight-PurpleAugustScheer, Alttara--NR--
'Maya Swingtime'MediumUnknown--Scheer, Alttara--NR--
'Mean Gene'MediumHybridPure-White-Philips, Hugo--NR--
'Mean Green Thing'MediumSport--Fransen, Marco--NR--
'Mercy Me'MediumHybridMed-LavenderJune into JulyMcDonell, Harold.2021
'Meredith Faith'MediumUnknown-AugustCullerton, Walter--NR--
'Merry-go-round'GiantHybrid--Elslager, Ed.1999
'Mesa Fringe'LargeSportPale-LavenderJulyRuh, Peter.1991
'Metallic Sheen'LargeHybridPale-LavenderJuly into AugustZilis, Mark.1999
'Metropolis'GiantHybridNear-WhiteJuly into AugustJohnson, Greg.2004
'Michael S. Flaherty'LargeHybridPale-LavenderJune into AugustChamberlain, Steve.2014
'Michael's Mud Pie'LargeUnknown-JuneMarkland, Sandie.2002
'Middle Ridge'MediumSportPale-Lavender-Boonstra, Richard & Lewis, C. & Ruh, Peter.1979
'Midnight Oil'MediumHybridLight-PurpleJulyStegeman, Bev & Stegeman, Dave.2004
'Midnight Rain'LargeUnknown--Dalton, Jim & Dalton, Meg--NR--
'Midnight Ride'LargeTC SportPale-LavenderJulyZilis, Mark.2004
'Midori Iwa'MediumSportLight-PurpleAugust to SeptemberUnknown--NR--
'Midsummer Night's Green'LargeHybridMed-LavenderJuly into AugustGoodwin, Randy.2006
'Midwest Green'LargeSportPale-LavenderJulyZilis, Mark--NR--
'Mighty Min'MiniatureHybridPale-LavenderJune into JulyGilligan, Madelon.2013
'Mighty Mite'SmallHybridMed-LavenderAugust to SeptemberDean, Don.2004
'Mikado'GiantHybridPale-Lavender-Aden, Paul.1982
'Mikawa-no-yuki'MediumHybridPale-LavenderAugust to OctoberSugita, Hajime & Ruh, Peter.1997
'Mike's Big Winky'LargeUnknown--Unknown--NR--
'Milky Rock'MediumTC SportPale-LavenderJuly into AugustZilis, Mark--NR--
'Millard Fillmore'LargeUnknown--Ruh, Peter & Ruh, Jean.2010
'Mill's Repechage'-Hybrid--Sneyers, Rob--NR--
'Miner Forty Niner'LargeHybrid--Lysne, Rod--NR--
'Ming Dynasty' (O'Harra)LargeUnknownPale-LavenderJulyO'Harra, Russ.1999
'Mingo'LargeUnknownPale-LavenderJulyWade, Van.2007
'Mini'SmallSportMed-LavenderJune into JulyLydell, Ransom--NR--
'Mini Mouse'MiniatureUnknownLight-PurpleJulyGoodwin, Randy.2006
'Miniata Variegata'MiniatureSportLight-PurpleJulyHomestead Seed Bank--NR--
'Minibelle'MiniatureUnknownMed-LavenderJuneWilletts, Michael--NR--
'Minima'SmallUnknownLight-Purple-Gowen, Hideko & Benedict, Dr Ralph (Herb)--NR--
'Minnie Bell'MediumHybridLight-PurpleAugustBenedict, Dr Ralph (Herb).1985
'Mint Chip'MediumHybridPale-LavenderJune into JulyShadrack, Mike.2011
'Mint Mound'LargeUnknownLight-PurpleJulyTompkins, Chet--NR--
'Minuta'MiniatureUnknownDeep-PurpleJulyUnknown--NR--
'Minutini'MiniatureHybridLight-PurpleAugustZilis, Mark.2009
'Miracle Lemony'MediumHybridYellowAugust to SeptemberSugita, Hajime--NR--
'Mirror Lake'MediumHybrid--Moore, Jeff--NR--
'Miss American Pie'MediumHybridLight-PurpleAugust to SeptemberWasitis, Chick.2009
'Miss Grace'MediumUnknown-July into AugustWrede, Arthur.2005
'Miss Jody's Special'MediumUnknown--Wrede, Arthur--NR--
'Miss Petite'SmallUnknownPale-Lavender-Aden, Paul--NR--
'Miss Ruby'MediumHybridLight-PurpleAugustWrede, Arthur.2005
'Miss Selene'SmallHybridLight-PurpleAugust to SeptemberWrede, Arthur--NR--
'Miss Shamim'LargeHybridLight-PurpleAugust to SeptemberMcHugh, Ed & Wrede, Arthur.2015
'Miss Sophie'MediumHybridMed-Lavender-Fischer, Dr Ulrich--NR--
'Miss Susie'SmallUnknown--Wrede, Arthur--NR--
'Missie Mouse'SmallUnknownLight-PurpleAugustSquires, Keith & Ruh, Peter.1996
'Mississippi River'LargeHybridPure-WhiteJune into JulyBeilstein, Doug & Malloy, Alex.2005
'Mister Green Genes'MediumHybridPale-LavenderJuly into AugustGoodwin, Randy.2017
'Mister Green Jeans'MiniatureUnknown--Unknown--NR--
'Misty Dawn'MediumSportPale-LavenderJulyHelsley, Calvin.2004
'Misty Morning'MediumHybridPale-LavenderJulyKuk, Bob.1986
'Mithril'MediumSport--Unknown--NR--
'Mito-no-hana'LargeUnknownLight-PurpleAugustNakayama, Toyozo--NR--
'Moegi Fukurin Akikaze'SmallUnknownMed-Lavender-Unknown--NR--
'Moegi Fukurin Otome'SmallUnknown--Unknown--NR--
'Mogul'MediumHybridPale-LavenderJuly into AugustSavory, Robert.1988
'Mohawk'LargeUnknown--Wade, Van--NR--
'Mohican Forest'LargeUnknown--Unknown--NR--
'Mohrchen'MediumUnknownMed-Lavender-Camehl, Friedrich--NR--
'Moi Marlene'MediumUnknownPale-Lavender-Ahlburg, Marlene--NR--
'Mojito'LargeTC SportPale-LavenderAugustZilis, Mark.2009
'Moldy Muffins'MediumSportMed-LavenderJulyUnknown--NR--
'Monitor'GiantUnknown-JulyMoldovan, Steve & Walek, Kevin.2009
'Monster Ears'MediumSportNear-WhiteJuly into AugustHeemskerk, Gerardus.2014
'Montreal'MediumHybridLight-PurpleAugustMontreal Botanical Garden.1983
'Moon Lily'MediumUnknownPale-LavenderJune into JulyTrott, Joyce & Harshbarger, Gretchen.1993
'Moonbeam'LargeSportPale-LavenderJuly into AugustUnknown--NR--
'Moongate Little Dipper'MediumHybridLight-PurpleJulySolberg, Robert.1996
'Moor Hound'LargeUnknownNear-WhiteJune into JulySmead, John J..2018
'Moose Bait'SmallHybrid--Williams, Glenn--NR--
'Mop Top'MiniatureHybridPure-White-Beilstein, Doug & Beilstein, Mardy.2009
'Morning Angel'MediumHybridNear-WhiteJuly into AugustSavory, Dennis.2000
'Mosel'MediumUnknownMed-Lavender-Klose, Heinz & Ruh, Peter & Ruh, Jean.2008
'Mossy Stone'LargeHybrid--Schulz, Ed.2009
'Mount Carmel'LargeUnknownLight-PurpleJulyWilkins, Dr Jim--NR--
'Mount Daisen'LargeHybridPale-LavenderJune into JulySugita, Hajime & Ruh, Peter & Ruh, Jean.2005
'Mount Fuji'GiantHybridLight-PurpleJulyWilkins, Dr Jim.1989
'Mount Olympus'LargeSportPale-LavenderJulyMalloy, Alex--NR--
'Mount Royal'MediumHybridPure-WhiteAugustMontreal Botanical Garden.1983
'Mount Tsukuba'LargeSportPale-LavenderJulyUnknown--NR--
'Mountain Green'LargeUnknown--Purtymun, Charles--NR--
'Mountain King'LargeHybridPale-LavenderJuneWard, Dr Dick & Ward, Jane.2012
'Mountain Man'LargeUnknownNear-WhiteJuneWade, Van--NR--
'Mountain Pride'GiantUnknown-July into AugustBenedict, Dr Ralph (Herb) & Kuenster, Rod.2010
'Mountain Sunrise'LargeTC SportPale-LavenderJulyZilis, Mark.1999
'Mountaineer'LargeSportPale-LavenderJulyKuk, Bob.2002
'Mr Asami'MediumSportLight-PurpleAugustAsami, Hisatoyo & Gowen, Hideko--NR--
'Mr Green Jeans'SmallSportMed-LavenderJulyFransen, Marco & Fransen, Joyce--NR--
'Mr Jack'MediumUnknownMed-LavenderJune into JulyWrede, Arthur--NR--
'Mr. Big'GiantUnknownNear-WhiteJulyPurtymun, Charles & Ruh, Peter.2010
'Mr. Lavengder's Sport'LargeSportPale-LavenderJuly into AugustUnknown--NR--
'Mr. Osami'SmallUnknown--Freeman, Franc & Freeman, Sally--NR--
'Mrs. Minky'SmallHybridPale-LavenderJulyHall, Peter.1993
'Much Appreciated'LargeSportLight-PurpleJuly into AugustMicheletti, Tom--NR--
'Mucho Macho'SmallHybridMed-LavenderAugust to SeptemberPhilips, Hugo--NR--
'Mumsie'GiantUnknownPale-LavenderJuly into AugustHiselman, Paula & Krul, Nancy.1999
'Munchkin'MediumTC SportLight-PurpleJune into JulyZilis, Mark.2003
'Munchkin Fire'MiniatureUnknownMed-LavenderJulyGoodwin, Randy.2009
'Munchkin Girl'SmallUnknown--Unknown--NR--
'Muppett'MediumUnknownPale-LavenderJulyWade, Van.2007
'Murasaki Ki Noka'MediumUnknownLight-PurpleJulyUnknown--NR--
'Murasaki Kuki Urajiro'MediumUnknownMed-Lavender-Unknown--NR--
'Muresuzume'SmallSportNear-WhiteAugustUnknown--NR--
'Mustang'SmallSportMed-LavenderJune into JulyMalloy, Alex.2002
'Mustang Sally'MediumHybrid--Wasitis, Chick.2008
'My Danish Sunshine'SmallSportNear-WhiteJuly into AugustPoulsgaard, Preben.2018
'My Fair Katie'LargeHybrid--Elslager, Ed.1998
'My Hollywood Romance'LargeHybrid--Stadden, Josh--NR--
'My Man Mark'GiantHybrid--Schmidt, Bevie.2009
'My Sister Anita'SmallHybridLight-PurpleJune into JulyGilligan, Madelon.2017
'My Valentine'MiniatureUnknown--Wade, Van--NR--
'My Valley'MediumUnknown--Goodwin, Randy--NR--
'My Yuma'LargeUnknownMed-Lavender-Livingston, Ron--NR--
'Mysterious Stranger'MediumTC Sport--Naylor Creek Nursery--NR--
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