| Medium Size Hostas | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
| 'Hadspen Blue Streaked' | Blue/Green | Streaked | White | Nat-Sport | Pale-Lavender | July into August | Falstad, C.H | --NR-- |
| 'Hadspen Hawk' | Blue/Green | - | - | Hybrid | Pale-Lavender | August to October | Smith, Eric & BHHS | .1988 |
| 'Hadspen Hawk Streaked' | Blue/Green | Streaked | Yellow | Nat-Sport | Pale-Lavender | August to September | Unknown | --NR-- |
| 'Hadspen Heron' | Blue/Green | - | - | Unknown | Pale-Lavender | July into August | Smith, Eric & Aden, Paul | .1976 |
| 'Hadspen Pink' | Blue/Green | - | - | Unknown | Pale-Lavender | July into August | Smith, Eric & BHHS | .1988 |
| 'Hadspen Samphire' | Light-Green | - | - | Hybrid | Pale-Lavender | August | Smith, Eric & Ruh, Peter | .1997 |
| 'Hakuho' | Med-Green | Medial | White | Nat-Sport | - | - | Unknown | --NR-- |
| 'Hakumuo' | Med-Green | Medial | Creamy White | Unknown | Light-Purple | June into July | Watanabe, Kenji | --NR-- |
| 'Hakutei' | Blue/Green | - | - | Unknown | - | - | Unknown | --NR-- |
| 'Hakuyo' | Med-Green | - | - | Hybrid | Light-Purple | August to October | Watanabe, Kenji & Ruh, Peter | .2002 |
| 'Hakuyo Nishiki' | Med-Green | Streaked | White | Nat-Sport | Light-Purple | August to September | Unknown | --NR-- |
| 'Halcyon Sunset' | Blue/Green | Streaked | Yellow | Nat-Sport | Pale-Lavender | July into August | Wrede, Arthur | --NR-- |
| 'Hallelujah' | Blue/Green | - | - | Hybrid | Med-Lavender | June into July | Zilis, Mark | .2010 |
| 'Hammered Gold' | Yellow | - | - | Hybrid | Near-White | July into August | Rawson, Don | .2016 |
| 'Hammurabi' | Dark-Green | | | Nat-Sport | - | - | Leuckx, Bart | --NR-- |
| 'Hampshire County' | Blue/Green | Marginal | White | Hybrid | Near-White | June | Lachman, Wm & Eleanor | .1993 |
| 'Hampshire Farms Going Green' | Yellow | - | - | TC Sport | - | July into August | Zilis, Mark | .2009 |
| 'Handle with Care' | Light-Green | Marginal | White | Hybrid | Pale-Lavender | June into July | Ward, Dr Dick & Jane | .2015 |
| 'Hands Up' | Dark-Green | Medial | Yellow | Nat-Sport | Pale-Lavender | July into August | Fransen, Marco | --NR-- |
| 'Hang on Sloopy' | Med-Green | - | - | Hybrid | Pale-Lavender | June into July | Ward, Dr Dick & Jane | .2014 |
| 'Hanja's Red Lines' | Yellow | - | - | Hybrid | - | - | Hansen, Jan Hurup | --NR-- |
| 'Hanja's What' | Med-Green | Medial | White | Hybrid | - | - | Hansen, Jan Hurup | --NR-- |
| 'Hanky Panky' | Med-Green | Marginal | Dark Green | TC Sport | Pale-Lavender | July into August | Hansen, Hans & Shady Oaks Nursery | .2004 |
| 'Happenstance' | Dark-Green | - | - | Hybrid | Med-Lavender | June into July | Blake, Amanda | .2012 |
| 'Happily Ever After' | Med-Green | Marginal | Creamy White | Hybrid | Near-White | August | Wilkins, Dr Jim & Sandy | .2002 |
| 'Happiness' | Blue/Green | - | - | Unknown | Pale-Lavender | July into August | Smith, Eric & BHHS | .1988 |
| 'Happy' | Blue/Green | Marginal | White | Unknown | - | - | Goodwin, Randy | .2013 |
| 'Happy Birthday, Mr. President' | Med-Green | Streaked | White | Nat-Sport | Light-Purple | September | Zilis, Mark | .2010 |
| 'Happy Camper' | Med-Green | Marginal | White | Hybrid | Light-Purple | July | Johnson, Greg | --NR-- |
| 'Happy Dayz' | Blue/Green | Medial | Yellow | TC Sport | Pale-Lavender | July into August | Naylor Creek Nursery | .2014 |
| 'Happy Family' | Med-Green | Marginal | White | Hybrid | - | - | Beilstein, Doug & Malloy, Alex | --NR-- |
| 'Happy Harbinger' | Med-Green | Medial | Yellow | Nat-Sport | Pale-Lavender | July | Unknown | --NR-- |
| 'Happy Hearts' | Blue/Green | - | - | Hybrid | Pale-Lavender | July | Fisher, Eunice V. | .1973 |
| 'Happy Pockets' | Med-Green | Streaked | White | Unknown | - | - | Asch, Stuart | --NR-- |
| 'Happy Valley' | Med-Green | Marginal | White | Hybrid | Light-Purple | August | Lachman, Wm & Eleanor | .1995 |
| 'Happy Valley Supreme' | Med-Green | Streaked | Yellow | Nat-Sport | Light-Purple | August | Schwarz, Jim | --NR-- |
| 'Hard Ball' | Med-Green | Marginal | Yellow | Hybrid | Near-White | June into July | Ward, Dr Dick & Jane | .2012 |
| 'Harmonica' | Light-Green | Marginal | White | Nat-Sport | Med-Lavender | July | Snyder, Ron | .1999 |
| 'Harpoon' | Med-Green | Marginal | White | Hybrid | Light-Purple | August | Herold, Roy | .2000 |
| 'Harry A. Jacobsen' | Med-Green | Marginal | Yellow | Unknown | Pale-Lavender | June into July | Pierson, Robert | .1996 |
| 'Harry van de Laar' | Med-Green | - | - | Hybrid | Med-Lavender | July into August | Visser, Cees | --NR-- |
| 'Haru Kaori' | Dark-Green | - | - | Nat-Sport | Pale-Lavender | August to September | Unknown | --NR-- |
| 'Haru no Yume' | Med-Green | Medial | White | Nat-Sport | Near-White | July into August | Unknown | --NR-- |
| 'Harushoku' | Dark-Green | - | - | Nat-Sport | Light-Purple | August to September | Unknown | --NR-- |
| 'Harvest Delight' | Med-Green | - | - | Hybrid | Pale-Lavender | August to October | Summers, Alex & Ruh, Peter | .1997 |
| 'Harvest Desire' | Dark-Green | - | - | Hybrid | Pale-Lavender | August to October | Summers, Alex & Ruh, Peter | .1997 |
| 'Hasamona Cynthia Ann' | Med-Green | Marginal | White | Nat-Sport | Pale-Lavender | July into August | Jennings, Dave | --NR-- |
| 'Hasamona Daniel's Delight' | Light-Green | Streaked | Yellow | Unknown | - | - | Jennings, Dave | --NR-- |
| 'Hasta Manana' | Light-Green | Marginal | White | Hybrid | - | - | Horvath, Brent | --NR-- |
| 'Hauser Wide Leaf' | Med-Green | - | - | Unknown | - | - | Rocknell Nursery | --NR-- |
| 'Hawaiian Luau' | Yellow | Marginal | Green | Nat-Sport | Med-Lavender | August | Zilis, Mark | .2011 |
| 'Hawkeye' | Med-Green | Marginal | Yellow | Nat-Sport | Pale-Lavender | June | Maroushek, Lillian | .1999 |
| 'Hawkeye Gold' | Med-Green | Marginal | Yellow | Nat-Sport | Pale-Lavender | June | Simmering, Ron | .2000 |
| 'Heart and Soul' | Yellow | Marginal | Speckles | Nat-Sport | Pale-Lavender | July | Mortko, Rob | .2000 |
| 'Heart of Chan' | Blue/Green | - | - | Hybrid | Pale-Lavender | July | Owens, Clarence | .1987 |
| 'Heart Strings' | Yellow | - | - | Hybrid | Near-White | July into August | Beikmann, Stan | .2016 |
| 'Heart Throb' | Blue/Green | - | - | Unknown | Pale-Lavender | June | Anderson, Kenneth | .1982 |
| 'Heartbreaker' | Yellow | Marginal | Green | Nat-Sport | Pale-Lavender | July | Ward, Dr Dick & Jane | .2012 |
| 'Hearts and Flowers' | Med-Green | Streaked | White | Hybrid | Light-Purple | July | Ward, Dr Dick & Jane | .2009 |
| 'Hearts in Motion' | Blue/Green | - | - | Hybrid | - | July into August | Dean, Don | .2016 |
| 'Heartsong' | Med-Green | Marginal | White | Nat-Sport | Pale-Lavender | July | Walters Gardens | .1984 |
| 'Heat Lightning' | Dark-Green | Streaked | White | Hybrid | - | - | Ward, Dr Dick & Jane | .2012 |
| 'Heaven on Earth' | Light-Green | - | - | Unknown | - | August to September | Asch, Stuart | .2009 |
| 'Heaven Scent' | Med-Green | Streaked | Speckles | TC Sport | Pure-White | August to October | Walters Gardens & Falstad, Clarence | .1988 |
| 'Heavenly Green' | Blue/Green | - | - | Nat-Sport | Near-White | July into August | Kulpa, John | .1997 |
| 'Heavenly Tiara' | Med-Green | Marginal | White | Nat-Sport | Light-Purple | July into August | Walters Gardens | .1998 |
| 'Hedgehog' | Yellow | - | - | Unknown | - | - | Plater-Zyberk, Maria | --NR-- |
| 'Helen Field Fischer' | Blue/Green | - | - | Unknown | Pale-Lavender | July | Minks, Eldren | .1970 |
| 'Helena Sundberg' | Med-Green | Streaked | Yellow | Nat-Sport | Near-White | July | Fägerstrom, B. E. H. | --NR-- |
| 'Hello There' | Dark-Green | - | - | Unknown | Light-Purple | August | Benedict, Dr R. (Herb) & Kuenster, Rod | .2010 |
| 'Henry Payne' | Dark-Green | - | - | Unknown | Pure-White | July into August | Syre-Herz, Ursula | .1996 |
| 'Her Eyes Were Blue' | Blue/Green | - | - | Hybrid | Near-White | July into August | Dean, Don | .2008 |
| 'Herb Benedict' | Med-Green | Streaked | White | Hybrid | Near-White | July | Wilkins, Dr Jim | .1990 |
| 'Herbal Tea' | Light-Green | - | - | TC Sport | Pale-Lavender | July into August | Zilis, Mark | .2009 |
| 'Herifu' | Med-Green | Marginal | White | Unknown | Light-Purple | August | Unknown & Walek, Kevin | .2009 .2018 |
| 'Herifu Tet' | Dark-Green | - | - | Unknown | - | - | Unknown | --NR-- |
| 'Hermes' | Dark-Green | Streaked | Yellow | Hybrid | Pale-Lavender | July into August | Malloy, Alex | .2004 |
| 'Hey You' | Med-Green | - | - | Unknown | - | - | Scheer, Alttara | --NR-- |
| 'Hidden Agenda' | Med-Green | - | - | Unknown | Near-White | July into August | Pollock, Ali | .2005 |
| 'Hidden Gem' | Med-Green | - | - | Hybrid | Near-White | July into August | Kwick, Charles | .2017 |
| 'Hidden Love' | Blue/Green | Medial | White | Unknown | - | - | Unknown | --NR-- |
| 'Hidden Treasure' | Med-Green | Marginal | White | TC Sport | Light-Purple | July into August | Zilis, Mark | .2009 |
| 'Hideko Gowen' | Blue/Green | Medial | Yellow | Hybrid | Near-White | July | Benedict, Dr Ralph (Herb) | .1990 |
| 'Hideko's Gift' | Light-Green | - | - | Unknown | - | - | Unknown | --NR-- |
| 'Higaki Fukurin Iwa' | Med-Green | Marginal | Yellow | Nat-Sport | Light-Purple | August to October | Higaki | --NR-- |
| 'High Beam' | Med-Green | Streaked | White | Unknown | - | - | Lydell, Ransom | --NR-- |
| 'High Bid' | Med-Green | Marginal | White | Nat-Sport | - | - | Malloy, Alex | --NR-- |
| 'High Country' | Dark-Green | Medial | White | Nat-Sport | Pale-Lavender | July into August | Benfield, Jeff | .2004 |
| 'High Diver' | Dark-Green | Marginal | Yellow | Unknown | Pale-Lavender | August to September | Van Ostrand, John | .2005 |
| 'High Kicker' | Med-Green | - | - | Hybrid | Pale-Lavender | August | Aden, Paul | .1987 |
| 'High Pockets Gold' | Yellow | - | - | Hybrid | - | - | Zumbar, Wm | --NR-- |
| 'High Radiation' | Med-Green | - | - | Unknown | - | August to September | Lydell, Ransom & Walek, Kevin | .2009 |
| 'High Tide' | Blue/Green | - | - | Hybrid | Pale-Lavender | August to October | Hansen, Hans | .2005 |
| 'High Voltage' | Med-Green | Medial | Yellow | Nat-Sport | Pale-Lavender | July | van den Top, Jan | --NR-- |
| 'High-rise' | Med-Green | Marginal | Yellow | Hybrid | Pale-Lavender | July into August | Elslager, Ed | .2003 |
| 'Hikosan' | Dark-Green | Medial | Yellow | Nat-Sport | Light-Purple | August to September | Kumagae, Toshikuni | --NR-- |
| 'Hilda Wassman' | Blue/Green | Marginal | Yellow | Unknown | Pale-Lavender | July | Savory, Robert | .1985 |
| 'Hillary' | Light-Green | - | - | Hybrid | Med-Lavender | July into August | Kwick, Charles | .2017 |
| 'Hime Karafuto' | Med-Green | Marginal | Yellow | Unknown | Light-Purple | August | Unknown | --NR-- |
| 'Hime Ogon Iwa' | Yellow-Gold | - | - | Unknown | Med-Lavender | July into August | Ruh, Peter | .2002 .2018 |
| 'Hime Setouchi' | Med-Green | - | - | Nat-Sport | Med-Lavender | August to October | Unknown | --NR-- |
| 'Hippeastrum' | Med-Green | - | - | Unknown | - | - | Unknown | --NR-- |
| 'Hippodrome' | Med-Green | - | - | Hybrid | Near-White | June | Malloy, Alex | .2001 |
| 'Hirao Elite' | Dark-Green | - | - | Unknown | Light-Purple | August to October | Hirao, Shuichi & Ruh, Peter | .1997 |
| 'Hirao Grande' | Med-Green | - | - | Hybrid | Light-Purple | August to October | Hirao, Shuichi & Ruh, Peter | .1997 |
| 'Hirao Monument' | Light-Green | - | - | Hybrid | Pale-Lavender | September | Hirao, Shuichi & Ruh, Peter | .1997 |
| 'Hirao Splendor' | Med-Green | - | - | Unknown | Pale-Lavender | September | Hirao, Shuichi & Ruh, Peter | .1997 |
| 'Hi-renjyaku' | Med-Green | Streaked | White | Hybrid | - | - | Fukatsu, Shinya | --NR-- |
| 'Hishaku' | Blue/Green | - | - | Unknown | - | - | Hansen, Hans | --NR-- |
| 'Hit or Miss' | Dark-Green | Marginal | Yellow | TC Sport | Pale-Lavender | July into August | Zilis, Mark | .2011 |
| 'Hitotsuba' | Med-Green | - | - | Nat-Sport | Pale-Lavender | July into August | Unknown | --NR-- |
| 'Holar Black Swan' | Light-Green | - | - | Hybrid | Med-Lavender | August to September | Van Keer, Ronny | --NR-- |
| 'Holar Garnet Crow' | Light-Green | - | - | Hybrid | - | - | Van Keer, Ronny | --NR-- |
| 'Holar Purple Flash' | Blue/Green | Medial | Reddish | Hybrid | - | - | Van Keer, Ronny | --NR-- |
| 'Holar Rainbow Colors' | Med-Green | Streaked | White | Hybrid | - | - | Van Keer, Ronny | --NR-- |
| 'Holar Red Wine' | Light-Green | - | - | Hybrid | Med-Lavender | - | Van Keer, Ronny | --NR-- |
| 'Holar Wild Side' | - | - | - | Hybrid | - | - | Van Keer, Ronny | --NR-- |
| 'Holly's #14' | Med-Green | - | - | Unknown | - | - | Holly, Gladys & AHS | --NR-- |
| 'Holly's Dazzler' | Med-Green | - | - | Hybrid | Light-Purple | July into August | Benedict, Dr Ralph (Herb) | .1987 |
| 'Holly's Hybrid' | Med-Green | - | - | Hybrid | Light-Purple | July into August | Holly, Gladys & Ruh, Peter | .2002 |
| 'Holmen Class of '59' | Light-Green | - | - | Unknown | Med-Lavender | July into August | Kwick, Charles | .2017 |
| 'Holy Moses' | Blue/Green | Marginal | White | Unknown | - | - | Benedict, Dr Ralph (Herb) | --NR-- |
| 'Home Run' | Med-Green | - | - | Hybrid | - | - | Malloy, Alex | --NR-- |
| 'Home Sweet Home' | Light-Green | Marginal | White | Nat-Sport | Med-Lavender | July | Fransen, Marco & Joyce | --NR-- |
| 'Homespun' | Blue/Green | - | - | Hybrid | - | - | Livingston, Ron | --NR-- |
| 'Hometown Hero' | Blue/Green | - | - | Hybrid | Pure-White | July into August | Stegeman, Bev & Dave | .2014 |
| 'Honey Bee' | Yellow-Gold | - | - | Hybrid | Near-White | June into July | Wilson, Audra & Van Wyke, Trudy | --NR-- |
| 'Honey Boy' | Med-Green | Marginal | Yellow | Unknown | - | - | Livingston, Ron | --NR-- |
| 'Honey Hill Anisette' | Dark-Green | Streaked | White | Unknown | Light-Purple | - | Erb, Marsha Axmear | --NR-- |
| 'Honey Hill Gravy Boat' | Dark-Green | - | - | Unknown | - | - | Erb, Marsha Axmear | .1999 |
| 'Honey Hill Midnight Oasis' | Dark-Green | - | - | Unknown | - | - | Erb, Marsha Axmear | --NR-- |
| 'Honey Hill Pinking Shears' | Blue/Green | - | - | Unknown | - | July into August | Erb, Marsha Axmear | .2003 |
| 'Honey Hill Pucker Up' | Light-Green | - | - | Unknown | - | - | Erb, Marsha Axmear | .1999 |
| 'Honey Hill Shimmer and Shimmy' | Blue/Green | Marginal | Yellow | Hybrid | Pale-Lavender | July into August | Erb, Marsha Axmear | .1999 |
| 'Honey Hill Stainless Steel' | Dark-Green | - | - | Unknown | - | June into July | Erb, Marsha Axmear | .2003 |
| 'Honey Hill Tokens' | Blue/Green | Marginal | White | Unknown | Med-Lavender | July into August | Erb, Marsha Axmear | .2003 |
| 'Honey Hill Wayward Heart' | Blue/Green | - | - | Unknown | Med-Lavender | June into July | Erb, Marsha Axmear | .2003 |
| 'Honey Hill Wrinkled Rainslicker' | Med-Green | - | - | Hybrid | Light-Purple | August to October | Erb, Marsha Axmear | .1999 |
| 'Honey Pie' | Yellow | - | - | Hybrid | Pale-Lavender | July into August | Solberg, Robert | .2013 |
| 'Honeycomb' | Med-Green | Marginal | Yellow | Nat-Sport | Pale-Lavender | July into August | Malloy, Alex | .2000 |
| 'Honeysong Ginko' | Med-Green | - | - | Nat-Sport | Light-Purple | August to September | Summers, Alex | --NR-- |
| 'Honeysong Yahato Sito' | Med-Green | - | - | Nat-Sport | Light-Purple | July | Summers, Alex | --NR-- |
| 'Honker Gold' | Yellow | - | - | Unknown | Near-White | June | Wade, Shirley | --NR-- |
| 'Hoopla' | Med-Green | - | - | Hybrid | Pale-Lavender | July | Unknown & Zilis, Mark | .2010 |
| 'Hoosier Hysteria' | Blue/Green | - | - | Unknown | - | - | Goodwin, Randy | .2014 |
| 'Hooter' | Med-Green | Streaked | White | Unknown | Light-Purple | July | Benedict, Dr R. (Herb) & Kuenster, Rod | .2010 |
| 'Hopewell' | Blue/Green | - | - | Unknown | Near-White | June | Wade, Van | --NR-- |
| 'Hoplite' | Light-Green | Marginal | White | Unknown | - | - | Malloy, Alex | .2000 |
| 'Hosoba Yuki-no-Jyou' | Light-Green | Streaked | Yellow | Hybrid | - | - | Fukatsu, Shinya | --NR-- |
| 'Hot and Spicy' | Med-Green | Marginal | White | Nat-Sport | Pale-Lavender | August | Zilis, Mark | .2011 |
| 'Hot Diggity Dog' | Light-Green | Marginal | Yellow | Hybrid | Pure-White | June into July | Elslager, Ed | .1998 |
| 'Hot Kiss' | Blue/Green | Medial | Yellow | Nat-Sport | Pale-Lavender | June into July | Van Eechaute, Danny | .2011 |
| 'Hot Lips' | Med-Green | - | - | Unknown | Deep-Purple | July into August | Benedict, Dr R. (Herb) & Gowen, Hideko & Riehl, F. | .1993 |
| 'Hot Wheels' | Blue/Green | Marginal | Yellow | Hybrid | Pale-Lavender | July into August | Elslager, Ed | .2003 |
| 'Hotshot' | Yellow | | | Unknown | - | - | Wols, Dan | --NR-- |
| 'Hotspur' | Med-Green | Marginal | White | Unknown | - | - | Chrystal, Ian | --NR-- |
| 'Hottie' | Med-Green | Streaked | Yellow | Hybrid | Pale-Lavender | July | Elslager, Ed | .2002 |
| 'Hottsy Tottsy' | Yellow | - | - | Unknown | Pale-Lavender | July | Hottovy, Les & Steve | .2004 |
| 'Hugs and Kisses' | Blue/Green | - | - | Hybrid | Near-White | June into July | Seaver, Mildred | --NR-- |
| 'Hula Skirt' | Yellow | - | - | Nat-Sport | Pale-Lavender | August to September | Zilis, Mark & Schwarz, Jim | .2015 |
| 'Humility' | Dark-Green | - | - | TC Sport | Med-Lavender | July into August | Snyder, Ron | .1997 |
| 'Hunky Dory' | Med-Green | - | - | Unknown | Light-Purple | July into August | Benedict, Dr Ralph (Herb) | --NR-- |
| 'Hunter's Ridge' | Blue/Green | Marginal | White | Hybrid | Pale-Lavender | August | Wilkins, Dr Jim & Sandy | .2002 |
| 'Huron' | Blue/Green | - | - | Unknown | Near-White | June into July | Wade, Van | .2007 |
| 'Hyakka-no-homare' | Blue/Green | Streaked | White | Unknown | - | - | Unknown | --NR-- |
| 'Hydon Gleam' | Yellow | - | - | Hybrid | Pale-Lavender | August | George, Arthur & Ruh, Peter | .1998 |
| 'Hypnosis' | Dark-Green | Marginal | White | Nat-Sport | Pale-Lavender | July into August | Zilis, Mark | .2010 |
| 'Hyugabotan' | Med-Green | - | - | Unknown | Med-Lavender | August to September | Unknown | --NR-- |
| 'Scarlet O'Hara' | Yellow | - | - | Hybrid | Light-Purple | - | Syre-Herz, Ursula | .1996 |
|