| Cultivar Name | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
| 'Hallelujah' | Medium | Blue/Green | - | - | Hybrid | Med-Lavender | June into July | Zilis, Mark | .2010 |
| 'Hampshire Farms Going Green' | Medium | Yellow | - | - | TC Sport | - | July into August | Zilis, Mark | .2009 |
| 'Hang on Sloopy' | Medium | Med-Green | - | - | Hybrid | Pale-Lavender | June into July | Ward, Dr Dick & Ward, Jane | .2014 |
| 'Hanja's Crazy Mouse' | Small | Blue/Green | Streaked | Yellow | Sport | Light-Purple | July | Hansen, Jan Hurup | --NR-- |
| 'Happenstance' | Medium | Dark-Green | - | - | Hybrid | Med-Lavender | June into July | Blake, Amanda | .2012 |
| 'Happy' | Medium | Blue/Green | Marginal | White | Unknown | - | - | Goodwin, Randy | .2013 |
| 'Happy Accident' | Small | Blue/Green | Medial | White | Sport | Pure-White | June into July | Van Eechaute, Danny | .2013 |
| 'Happy Dayz' | Medium | Blue/Green | Medial | Yellow | TC Sport | Pale-Lavender | July into August | Naylor Creek Nursery | .2014 |
| 'Happy Hearts' | Medium | Blue/Green | - | - | Hybrid | Pale-Lavender | July | Fisher, Eunice V. | .1973 |
| 'Happy Valley Supreme' | Medium | Med-Green | Streaked | Yellow | Sport | Light-Purple | August | Schwarz, Jim | --NR-- |
| 'Harmonica' | Medium | Light-Green | Marginal | White | Sport | Med-Lavender | July | Snyder, Ron | .1999 |
| 'Hasamona Cynthia Ann' | Medium | Med-Green | Marginal | White | Sport | Pale-Lavender | July into August | Jennings, Dave | --NR-- |
| 'Hawaiian Luau' | Medium | Yellow | Marginal | Green | Sport | Med-Lavender | August | Zilis, Mark | .2011 |
| 'Heart of Hearts' | Large | Med-Green | - | - | Hybrid | Deep-Purple | July | Zidonis, Wayne & Zidonis, Rita | .2011 |
| 'Heartache' | Large | Yellow | - | - | Hybrid | Light-Purple | July into August | Benedict, Dr Ralph (Herb) & Walek, Kevin | .2009 |
| 'Hearts and Flowers' | Medium | Med-Green | Streaked | White | Hybrid | Light-Purple | July | Ward, Dr Dick & Ward, Jane | .2009 |
| 'Heart's Content' | Large | Med-Green | Marginal | Yellow | Hybrid | Pale-Lavender | July into August | Vaughn, Kevin & Walek, Kevin | .2009 |
| 'Hearts in Motion' | Medium | Blue/Green | - | - | Hybrid | - | July into August | Dean, Don | .2016 |
| 'Heat Lightning' | Medium | Dark-Green | Streaked | White | Hybrid | - | - | Ward, Dr Dick & Ward, Jane | .2012 |
| 'Heather' | Large | Dark-Green | - | - | Unknown | - | August to September | Schwarz, Jim | .2015 |
| 'Heaven on Earth' | Medium | Light-Green | - | - | Unknown | - | August to September | Asch, Stuart | .2009 |
| 'Heideturm' | Large | Light-Green | - | - | Unknown | Med-Lavender | July into August | Fischer, Dr Ullrich | --NR-- |
| 'Helena Sundberg' | Medium | Med-Green | Streaked | Yellow | Sport | Near-White | July | Fägerstrom, B. E. H. | --NR-- |
| 'Hellebarde' | Small | Med-Green | - | - | Unknown | - | - | Kohlein, Fritz | --NR-- |
| 'Hello There' | Medium | Dark-Green | - | - | Unknown | Light-Purple | August | Benedict, Dr Ralph (Herb) & Kuenster, Rod | .2010 |
| 'Her Eyes Were Blue' | Medium | Blue/Green | - | - | Hybrid | Near-White | July into August | Dean, Don | .2008 |
| 'Her Grace' | Large | Med-Green | - | - | Unknown | Near-White | July | Fisher, Eunice V. & The American Hosta Society | .1970 |
| 'Her Royal Hotness' | Miniature | Med-Green | Streaked | Yellow | Unknown | - | July into August | Freeman, Franc | .2012 |
| 'Here's Lookin' at You Kid' | Large | Light-Green | Marginal | Yellow | Sport | Med-Lavender | July into August | Van Ostrand, John | --NR-- |
| 'Here's the Beef' | Large | Yellow | - | - | Unknown | - | - | Ziarek, Ken | --NR-- |
| 'Hertha' | Small | Blue/Green | Marginal | Yellow | Hybrid | Light-Purple | July into August | Savory, Robert | .1988 |
| 'High Bid' | Medium | Med-Green | Marginal | White | Sport | - | - | Malloy, Alex | --NR-- |
| 'High Fidelity' | Large | Yellow | - | - | Hybrid | Pale-Lavender | June into July | Gilligan, Madelon | .2013 |
| 'High Five' | Small | Dark-Green | Marginal | White | Sport | Med-Lavender | July | Snyder, Ron | .2002 |
| 'High Heels' | Large | Med-Green | Streaked | Yellow | Hybrid | Pale-Lavender | June into July | Elslager, Ed | .2002 |
| 'High Impact' | Large | Blue/Green | - | - | Hybrid | Med-Lavender | June into July | Gilligan, Madelon | .2013 |
| 'High Noon' | Large | Yellow | - | - | Unknown | Pale-Lavender | June into July | Seaver, Mildred | .2004 |
| 'High Wire' | Small | Med-Green | - | - | Unknown | Med-Lavender | July | Lydell, Ransom | .1995 |
| 'Highland Fling' | Giant | Med-Green | Marginal | White | Hybrid | - | - | Ward, Dr Dick & Ward, Jane | .2012 |
| 'High-rise' | Medium | Med-Green | Marginal | Yellow | Hybrid | Pale-Lavender | July into August | Elslager, Ed | .2003 |
| 'Hillbilly Mountain' | Large | Blue/Green | - | - | Unknown | - | July into August | Schmidt, Bevie | .2009 |
| 'Hillside Spotlight' | Large | Yellow | - | - | Unknown | - | - | Unknown | --NR-- |
| 'Hime Ogon Iwa' | Medium | Yellow-Gold | - | - | Unknown | Med-Lavender | July into August | Ruh, Peter | .2002 .2018 |
| 'Hit or Miss' | Medium | Dark-Green | Marginal | Yellow | TC Sport | Pale-Lavender | July into August | Zilis, Mark | .2011 |
| 'Hokey Pokey' | Large | Yellow | - | - | Hybrid | Pale-Lavender | June into July | Dawber, Robert & Gilligan, Madelon | .2013 |
| 'Hometown Hero' | Medium | Blue/Green | - | - | Hybrid | Pure-White | July into August | Stegeman, Bev & Stegeman, Dave | .2014 |
| 'Honey Bear' | Large | Dark-Green | Marginal | Yellow | Sport | - | July into August | Solberg, Robert | .2016 |
| 'Honey Hill Night Light' | Small | Light-Green | - | - | Unknown | Med-Lavender | July into August | Erb, Marsha Axmear | .1999 |
| 'Honey Hill Pledge Allegiance' | Giant | Blue/Green | - | - | Unknown | Med-Lavender | July into August | Erb, Marsha Axmear | .2003 |
| 'Honey Pie' | Medium | Yellow | - | - | Hybrid | Pale-Lavender | July into August | Solberg, Robert | .2013 |
| 'Honeysong Ginko' | Medium | Med-Green | - | - | Sport | Light-Purple | August to September | Summers, Alex | --NR-- |
| 'Honeysong Yahato Sito' | Medium | Med-Green | - | - | Sport | Light-Purple | July | Summers, Alex | --NR-- |
| 'Hoosier Classic' | Small | Yellow | Marginal | White | Unknown | - | June into July | Goodwin, Randy | .2016 |
| 'Hoosier Hysteria' | Medium | Blue/Green | - | - | Unknown | - | - | Goodwin, Randy | .2014 |
| 'Hooter' | Medium | Med-Green | Streaked | White | Unknown | Light-Purple | July | Benedict, Dr Ralph (Herb) & Benedict, Dorothy & Kuenster, Rod | .2010 |
| 'Hopi Haloes' | Large | Blue/Green | Marginal | White | Unknown | - | June into July | Goodwin, Randy | .2016 |
| 'Hoplite' | Medium | Light-Green | Marginal | White | Unknown | - | - | Malloy, Alex | .2000 |
| 'Hosana' | Large | Blue/Green | Streaked | White | Hybrid | - | - | Van Wyke, Trudy | --NR-- |
| 'Hosta College' | Small | Blue/Green | - | - | Unknown | - | - | Unknown | --NR-- |
| 'Hot Air Balloon' | Large | Light-Green | - | - | Unknown | - | - | Goodenough, Rick | --NR-- |
| 'Hot and Spicy' | Medium | Med-Green | Marginal | White | Sport | Pale-Lavender | August | Zilis, Mark | .2011 |
| 'Hot Kiss' | Medium | Blue/Green | Medial | Yellow | Sport | Pale-Lavender | June into July | Van Eechaute, Danny | .2011 |
| 'Hottie' | Medium | Med-Green | Streaked | Yellow | Hybrid | Pale-Lavender | July | Elslager, Ed | .2002 |
| 'How About That!' | Large | Dark-Green | Streaked | White | TC Sport | Pale-Lavender | July into August | Zilis, Mark | .2011 |
| 'Hula Skirt' | Medium | Yellow | - | - | Sport | Pale-Lavender | August to September | Zilis, Mark & Schwarz, Jim | .2015 |
| 'Humility' | Medium | Dark-Green | - | - | TC Sport | Med-Lavender | July into August | Snyder, Ron | .1997 |
| 'Humpback Whale' | Giant | Blue/Green | - | - | Unknown | Near-White | June into July | Seaver, Mildred & Seaver, Charles | .2012 |
| 'Hunter V. Berthelot' | Large | Med-Green | - | - | Hybrid | Pale-Lavender | June into July | Chamberlain, Steve | .2015 |
| 'O'Harra' | Small | Yellow | - | - | Unknown | Deep-Purple | July | O'Harra, Russ & Walek, Kevin | .2009 |
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