| Cultivar Name | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
| 'Harlot' | Large | Dark-Green | Medial | White | Nat-Sport | Pale-Lavender | July into August | Unknown | --NR-- |
| 'Harry Torbert' | Large | Dark-Green | | - | Hybrid | Pale-Lavender | July into August | Zolock, Steve & Sarah | .2003 |
| 'Heartache' | Large | Yellow | | - | Hybrid | Light-Purple | July into August | Benedict, Dr R. (Herb) & Walek, Kevin | .2009 |
| 'Hearts and Flowers' | Medium | Med-Green | Streaked | White | Hybrid | Light-Purple | July | Ward, Dr Dick & Jane | .2009 |
| 'Heart's Content' | Large | Med-Green | Marginal | Yellow | Hybrid | Pale-Lavender | July into August | Vaughn, Kevin & Walek, Kevin | .2009 |
| 'Heavenly Green' | Medium | Blue/Green | | - | Nat-Sport | Near-White | July into August | Kulpa, John | .1997 |
| 'Herifu' | Medium | Med-Green | Marginal | White | Unknown | Light-Purple | August | Unknown & Walek, Kevin | .2009 .2018 |
| 'High Fidelity' | Large | Yellow | | - | Unknown | Pale-Lavender | June into July | Gilligan, Madelon | .2013 |
| 'High Impact' | Large | Blue/Green | | - | Hybrid | Med-Lavender | June into July | Gilligan, Madelon | .2013 |
| 'Hime Ogon Iwa' | Medium | Yellow-Gold | | - | Unknown | Med-Lavender | July into August | Ruh, Peter | .2002 .2018 |
| 'Holar Mystic Purple' | - | Med-Green | | - | Hybrid | - | August | Van Keer, Ronny | --NR-- |
| 'Hometown Hero' | Medium | Blue/Green | | - | Hybrid | Pure-White | July into August | Stegeman, Bev & Dave | .2014 |
| 'Honey Hill Balloon Bouquet' | Large | Dark-Green | | - | Unknown | Light-Purple | July | Erb, Marsha Axmear | .1999 |
| 'Honey Hill Shimmer and Shimmy' | Medium | Blue/Green | Marginal | Yellow | Hybrid | Pale-Lavender | July into August | Erb, Marsha Axmear | .1999 |
| 'Honey Hill Sidewalk Chalk' | Giant | Yellow | | - | Unknown | Pale-Lavender | June into July | Erb, Marsha Axmear | .2003 |
| 'Hooray!' | Large | Light-Green | Marginal | Yellow | Unknown | Near-White | June into July | Struhar, Bill | .2018 |
| '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 R. (Herb) & Kuenster, Rod | .2010 |
| 'Hypnotic' | Small | Dark-Green | Marginal | White | Unknown | Med-Lavender | July into August | Goodwin, Randy | .2018 |
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