| Cultivar Name | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
| 'Hammered Gold' | Medium | Yellow | | - | Hybrid | Near-White | July into August | Rawson, Don | .2016 |
| 'Hannah' | Small | Dark-Green | | - | Unknown | - | June into July | Schwarz, Jim & Karen | .2014 |
| 'Heavy Duty' | Large | Blue/Green | | - | Hybrid | Pale-Lavender | June into July | de Rooij, Piet | .2013 |
| 'Her Eyes Were Blue' | Medium | Blue/Green | | - | Hybrid | Near-White | July into August | Dean, Don | .2008 |
| 'Herman's Pride' | Giant | Yellow | | - | Hybrid | Pale-Lavender | July | Kuk, Bob | .2005 |
| 'Hideko's Pick' | Large | Blue/Green | | - | Unknown | Near-White | July | Dean, Don | --NR-- |
| 'High Noon' | Large | Yellow | | - | Unknown | Pale-Lavender | June into July | Seaver, Mildred | .2004 |
| 'Holy Moses' | Medium | Blue/Green | Marginal | White | Unknown | - | - | Benedict, Dr Ralph (Herb) | --NR-- |
| 'Honey Hill Gravy Boat' | Medium | Dark-Green | | - | Unknown | - | - | Erb, Marsha Axmear | .1999 |
| 'Honey Hill Water Ladle' | Large | Dark-Green | | - | Hybrid | Near-White | July | Hadrava, Jerry | .1999 |
| 'Honky Tonk Woman' | Giant | Med-Green | Marginal | Yellow | Hybrid | - | June into July | Ward, Dr Dick & Jane | .2009 |
| 'Hooray!' | Large | Light-Green | Marginal | Yellow | Unknown | Near-White | June into July | Struhar, Bill | .2018 |
| 'Hot Wheels' | Medium | Blue/Green | Marginal | Yellow | Hybrid | Pale-Lavender | July into August | Elslager, Ed | .2003 |
| 'Hypnotic' | Small | Dark-Green | Marginal | White | Unknown | Med-Lavender | July into August | Goodwin, Randy | .2018 |
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