| Cultivar Name | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
| 'Hadspen Seersucker' | Large | Med-Green | - | - | Unknown | Med-Lavender | July | Smith, Eric | --NR-- |
| 'Hallelujah' | Medium | Blue/Green | - | - | Hybrid | Med-Lavender | June into July | Zilis, Mark | .2010 |
| 'Hands of Hope' | Small | Med-Green | | - | Hybrid | Pale-Lavender | June into July | Wheat, J. | .2020 |
| 'Hanjas Big Dane' | Small | Light-Green | | | Unknown | | | Hansen, Jan Hurup | --NR-- |
| 'Hanjas Big Vanilla' | Large | Blue/Green | Streaked | White | Unknown | | | Hansen, Jan Hurup | --NR-- |
| 'Hannibal Hamlin' | Large | Dark-Green | Marginal | Yellow | TC Sport | - | July into August | Beilstein, Doug & Zilis, Mark | .2009 |
| '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-- |
| 'Harbor Master' | Large | Blue/Green | - | - | Unknown | - | - | Unknown | --NR-- |
| 'Heartache' | Large | Yellow | - | - | Hybrid | Light-Purple | July into August | Benedict, Dr Ralph (Herb) & Walek, Kevin | .2009 |
| 'Heart's Content' | Large | Med-Green | Marginal | Yellow | Hybrid | Pale-Lavender | July into August | Vaughn, Kevin & Walek, Kevin | .2009 |
| 'Her Grace' | Large | Med-Green | - | - | Unknown | Near-White | July | Fisher, Eunice V. & The American Hosta Society | .1970 |
| 'Hey Boss' | Medium | Med-Green | Streaked | White | Unknown | | | Mitchell, Bill | --NR-- |
| 'High Bid' | Medium | Med-Green | Marginal | White | Sport | - | - | Malloy, Alex | --NR-- |
| 'High Diver' | Medium | Dark-Green | Marginal | Yellow | Unknown | Pale-Lavender | August to September | Van Ostrand, John | .2005 |
| 'High Fidelity' | Large | Yellow | - | - | Hybrid | Pale-Lavender | June into July | Gilligan, Madelon | .2013 |
| 'High Heels' | Large | Med-Green | Streaked | Yellow | Hybrid | Pale-Lavender | June into July | Elslager, Ed | .2002 |
| 'High School Colors' | Medium | Med-Green | Marginal | Yellow | Hybrid | Pale-Lavender | June into July | Nyikos, Frank | .2019 |
| 'High Standard' | Large | Med-Green | Marginal | White | Sport | Pure-White | August | Benedict, Dr Ralph (Herb) | --NR-- |
| 'Hit or Miss' | Medium | Dark-Green | Marginal | Yellow | TC Sport | Pale-Lavender | July into August | Zilis, Mark | .2011 |
| 'Hoite Toite' | Miniature | Dark-Green | Marginal | Yellow | Sport | - | June into July | Goodwin, Randy | .2016 |
| 'Holar Ice Empress' | Giant | Blue/Green | - | - | Hybrid | Pale-Lavender | July | Van Keer, Ronny | --NR-- |
| 'Hollywood Hall of Fame' | Giant | Blue/Green | Marginal | Yellow | Sport | Pale-Lavender | June into July | Krueger, M. & Krueger, F. | .2019 |
| 'Hollywood Jolly Rancher' | Small | Med-Green | | | Unknown | Light-Purple | | Moore, Jeff | --NR-- |
| 'Hollywood Yosemite Sam' | Small | Med-Green | Streaked | White | Unknown | | | Krueger, Michael & Krueger, Fran | --NR-- |
| 'Honey Hill Balloon Bouquet' | Large | Dark-Green | - | - | Unknown | Light-Purple | July | Erb, Marsha Axmear | .1999 |
| 'Honey Hill Bubble Up' | Large | Dark-Green | - | - | Unknown | Med-Lavender | August to September | Erb, Marsha Axmear | .2003 |
| 'Honey Hill Night Light' | Small | Light-Green | - | - | Unknown | Med-Lavender | July into August | Erb, Marsha Axmear | .1999 |
| 'Honey Hill Sidewalk Chalk' | Giant | Yellow | - | - | Unknown | Pale-Lavender | June into July | Erb, Marsha Axmear | .2003 |
| 'Honeysong' | Large | Med-Green | Marginal | White | Unknown | Pale-Lavender | July into August | Summers, Alex & Walek, Kevin | .2009 |
| 'Honeysong Blue and Gold' | Large | Blue/Green | - | - | Sport | Pale-Lavender | July into August | Summers, Alex | --NR-- |
| 'Hoosier Hysteria' | Medium | Blue/Green | - | - | Unknown | - | - | Goodwin, Randy | .2014 |
| 'Hootenanny' | Small | Blue/Green | Marginal | Yellow | Unknown | Pale-Lavender | June into July | Goodwin, Randy | .2018 |
| 'Hooter' | Medium | Med-Green | Streaked | White | Unknown | Light-Purple | July | Benedict, Dr Ralph (Herb) & Benedict, Dorothy & Kuenster, Rod | .2010 |
| 'Hopi' | Large | Yellow | - | - | Unknown | Near-White | June | Wade, Van | --NR-- |
| 'Hot Kiss' | Medium | Blue/Green | Medial | Yellow | Sport | Pale-Lavender | June into July | Van Eechaute, Danny | .2011 |
| 'Hot Mama' | Medium | Blue/Green | Marginal | Yellow | Unknown | | | Kuenster, Rod | --NR-- |
| 'Hot Toddy' | Medium | Dark-Green | | | Unknown | Light-Purple | | Ziarek, Ken | --NR-- |
| '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 |
| 'Hugs for You' | Large | Med-Green | Medial | White | Unknown | Near-White | June into July | Vertz, Mary | .2020 |
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