Although taxonomists continue to debate the status of hosta species (it's part of their job afterall), W. George Schmidt in his 1991 classic, The Genus Hosta decided that there were 43 species. Since that time, he changed his mind on Hosta sieboldiana in 2010 and now he and The American Hosta Society call it a cultivar, H. 'Sieboldiana'. Listed below are the hosta species as we know them today...at least for now.

 
 
 
Total ListPlant SizeLeaf ColorVariegationVar ColorOriginFlower ColorSeasonSourceRegistered
Hosta aequinoctiianthaMediumMed-Green--SpeciesLight-PurpleSeptemberSpecies from Japan--NR--
Hosta alismifoliaLargeDark-Green--SpeciesLight-PurpleJulySpecies from Japan--NR--
Hosta atropurpureaSmallMed-Green--SpeciesDeep-PurpleJulySpecies from Japan--NR--
Hosta callianthaMediumMed-Green--SpeciesLight-PurpleAugust to OctoberSpecies from Japan--NR--
Hosta capitataMediumDark-Green--SpeciesDeep-PurpleJune into JulySpecies from Korea--NR--
Hosta cathayanaMediumMed-Green--SpeciesMed-LavenderAugust to OctoberSpecies from China--NR--
Hosta clausaLargeDark-Green--SpeciesDeep-PurpleJuly into AugustSpecies from Korea--NR--
Hosta clavataSmallLight-Green--SpeciesLight-PurpleAugust to OctoberSpecies from Japan--NR--
Hosta crassifoliaLargeMed-Green--SpeciesPure-WhiteJune into JulySpecies from Japan--NR--
Hosta densaMediumGreen--SpeciesLight-PurpleSeptemberSpecies from Japan--NR--
Hosta fluctuansLargeMed-Green--SpeciesNear-WhiteJuly into AugustSpecies from Japan--NR--
Hosta gracillimaSmallMed-Green--SpeciesLight-PurpleSeptember to OctoberSpecies from Japan--NR--
Hosta hypoleucaMediumMed-Green--SpeciesPale-LavenderJulySpecies from Japan--NR--
Hosta ibukiensisSmallMed-Green--SpeciesLight-PurpleJulySpecies from Japan--NR--
Hosta jonesiiMediumGreen--SpeciesLight-PurpleAugustSpecies from Korea--NR--
Hosta kikutiiMediumMed-Green--SpeciesPale-LavenderAugust to OctoberSpecies from Japan--NR--
Hosta kiyosumeninsisMiniatureMed-Green--SpeciesPure-WhiteJune into JulySpecies from Japan--NR--
Hosta laevigataMediumDark-Green--SpeciesLight-PurpleAugust to OctoberSpecies from Korea--NR--
Hosta longipesSmallDark-Green--SpeciesLight-PurpleAugust to OctoberSpecies from Japan--NR--
Hosta longissimaSmallMed-Green--SpeciesLight-PurpleAugust to OctoberSpecies from Japan--NR--
Hosta minorSmallGreen--SpeciesLight-PurpleJulySpecies from Korea--NR--
Hosta montanaLargeMed-Green--SpeciesPale-LavenderJune into JulySpecies from Japan--NR--
Hosta nakaianaMediumDark-Green--SpeciesLight-PurpleJulySpecies from Korea--NR--
Hosta nigrescensGiantBlue/Green--SpeciesPale-LavenderJuly into AugustSpecies from Japan--NR--
Hosta okamotoiSmallMed-Green--SpeciesLight-PurpleSeptemberSpecies from Japan--NR--
Hosta pachyscapaLargeMed-Green--SpeciesPale-LavenderAugustSpecies from Japan--NR--
Hosta plantagineaLargeMed-Green--SpeciesPure-WhiteAugust to OctoberSpecies from China--NR--
Hosta pulchellaSmallMed-Green--SpeciesLight-PurpleAugust to OctoberSpecies from Japan--NR--
Hosta pycnophyllaLargeLight-Green--SpeciesMed-LavenderAugust to OctoberSpecies from Japan--NR--
Hosta rectifoliaMediumBlue/Green--SpeciesLight-PurpleJulySpecies from Japan--NR--
Hosta rohdeifoliaSmallMed-GreenMarginalYellowSpeciesPale-LavenderJuly into AugustSpecies from Japan--NR--
Hosta rupifragaSmallMed-Green--SpeciesPale-LavenderSeptemberSpecies from Japan--NR--
Hosta shikokianaSmallMed-Green--SpeciesLight-PurpleJuneSpecies from Japan--NR--
Hosta sieboldiiSmallMed-GreenMarginalWhiteSpeciesLight-PurpleAugustSpecies from Japan--NR--
Hosta takahashiiMediumLight-Green--SpeciesLight-PurpleAugustSpecies from Japan--NR--
Hosta takiensisMediumMed-Green--SpeciesLight-PurpleSeptemberSpecies from Japan--NR--
Hosta tardivaSmallMed-Green--SpeciesPale-LavenderSeptemberSpecies from Japan--NR--
Hosta tibaeMediumDark-Green--SpeciesLight-PurpleSeptemberSpecies from Japan--NR--
Hosta tsushimensisMediumMed-Green--SpeciesLight-PurpleAugustFujita, Dr Noboru--NR--
Hosta ventricosaLargeDark-Green--SpeciesLight-PurpleJulySpecies from China--NR--
Hosta venustaMiniatureMed-Green--SpeciesPale-LavenderJune into JulySpecies from Korea--NR--
Hosta yingeriSmallMed-Green--SpeciesLight-PurpleSeptemberSpecies from Korea--NR--
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