| Cultivar Name | Source | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Registered |
| 'Hachijo Gibōshi' | Duplicate Name | - | - | - | - | Duplicate | - | - | --NR-- |
| 'HACHIMANTAIMIDORI | Unknown | - | - | - | - | Unknown | - | - | --NR-- |
| 'Hagakure' | Duplicate Name | - | - | - | - | Duplicate | - | - | --NR-- |
| 'Hagi-no-mai' | Unknown | Small | Dark-Green | Streaked | Yellow | Unknown | - | - | --NR-- |
| 'Hakama' | Duplicate Name | - | - | - | - | Duplicate | - | - | --NR-- |
| 'Hakama Souvenir' | Solberg, Bob | Large | Blue/Green | | | Nat-Sport | Med-Lavender | June into July | --NR-- |
| 'Hakko' | Unknown | Small | Med-Green | Marginal | White | Unknown | - | - | --NR-- |
| 'Hakuba' | Unknown | - | Med-Green | Medial | White | Unknown | - | - | --NR-- |
| 'Haku-chu-han' | Duplicate Name | - | Med-Green | Medial | White | Duplicate | - | - | --NR-- |
| 'Hakuho' | Unknown | Medium | Med-Green | Medial | White | Sport | - | - | --NR-- |
| 'Hakujima' | Unknown | - | - | - | - | Unknown | - | - | --NR-- |
| 'Hakumuo' | Watanabe, Kenji | Medium | Med-Green | Medial | Creamy White | Unknown | Light-Purple | June into July | --NR-- |
| 'Hakutei' | Unknown | Medium | Blue/Green | - | - | Unknown | - | - | --NR-- |
| 'Hakuūn Nishiki' | Unknown | Large | Med-Green | Medial | Yellow | Sport | Pale-Lavender | July | --NR-- |
| 'Hakuyo' | Watanabe, Kenji & Ruh, Peter | Medium | Med-Green | - | - | Hybrid | Light-Purple | August to October | .2002 |
| 'Hakuyo Nishiki' | Unknown | Medium | Med-Green | Streaked | White | Sport | Light-Purple | August to September | --NR-- |
| 'Hamachidori' | Fukatsu, Shinya | Small | Light-Green | Streaked | White | Unknown | Near-White | - | --NR-- |
| 'Hanazawa Fukurin Mizu' | Unknown | Small | Med-Green | Marginal | White | Sport | Light-Purple | September to October | --NR-- |
| 'Haru Kaori' | Unknown | Medium | Dark-Green | - | - | Sport | Pale-Lavender | August to September | --NR-- |
| 'Haru Yuki Nishiki' | Unknown | Large | Med-Green | - | - | Sport | Pale-Lavender | July | --NR-- |
| 'Haru-no-Yuki' | Unknown | - | Med-Green | Marginal | White | Unknown | - | - | --NR-- |
| 'Haru-no-Yume' | Unknown | Medium | Med-Green | Medial | White | Sport | Near-White | July into August | --NR-- |
| 'Harushoku' | Unknown | Medium | Dark-Green | - | - | Sport | Light-Purple | August to September | --NR-- |
| 'Hatsushimo' | Duplicate Name | - | - | - | - | Duplicate | - | - | --NR-- |
| 'Hatsushimo Nishiki' | Unknown | Large | Med-Green | Streaked | Yellow | Hybrid | - | - | --NR-- |
| 'Hatsuyuki Nishiki' | Watanabe, Kenji | Small | Med-Green | Medial | White | Sport | Pale-Lavender | July | --NR-- |
| 'Hayazaki Oba' | Duplicate Name | - | - | - | - | Duplicate | - | - | --NR-- |
| 'Heisei no Akari' | Unknown | Small | Med-Green | Medial | Yellow | Unknown | - | - | --NR-- |
| 'Helonioides Fuiri Karafuto' | Duplicate Name | - | - | - | - | Duplicate | - | - | --NR-- |
| 'Helonioides Ogata Bunchoko' | Duplicate Name | - | - | - | - | Duplicate | - | - | --NR-- |
| 'Helonoides' | Unknown | Small | Light-Green | Marginal | White | Duplicate | Light-Purple | August | --NR-- |
| 'Helonoides Albopicta' | Duplicate Name | - | - | - | - | Duplicate | - | - | --NR-- |
| 'Herifu' | Unknown & Walek, Kevin | Medium | Med-Green | Marginal | White | Unknown | Light-Purple | August | .2009 .2018 |
| 'Herifu Tet' | Unknown | Medium | Dark-Green | - | - | Unknown | - | - | --NR-- |
| 'Hida-no-hana' | Sakurai, Masaru | Large | Light-Green | Streaked | Green | Sport | Pale-Lavender | - | --NR-- |
| 'Hido Noltaro' | Unknown | Small | Med-Green | Streaked | White | Sport | - | - | --NR-- |
| 'Higaki Fukurin Iwa' | Higaki | Medium | Med-Green | Marginal | Yellow | Sport | Light-Purple | August to October | --NR-- |
| 'Hikosan' | Kumagae, Toshikuni | Medium | Dark-Green | Medial | Yellow | Sport | Light-Purple | August to September | --NR-- |
| 'Hime' | Duplicate Name | - | - | - | - | Duplicate | - | - | --NR- |
| 'Hime Arechino Kogarashi' | Duplicate Name | - | - | - | - | Duplicate | - | - | --NR-- |
| 'Hime Hyuga Gibōshi' | Duplicate Name | - | - | - | - | Duplicate | - | - | --NR-- |
| 'Hime Iwa Gibōshi' | Duplicate Name | - | - | - | - | Duplicate | - | - | --NR-- |
| 'Hime Karafuto' | Unknown | Medium | Med-Green | Marginal | Yellow | Unknown | Light-Purple | August | --NR-- |
| 'Hime Koba' | Unknown | Small | Med-Green | - | - | Sport | Light-Purple | August | --NR-- |
| 'Hime Murasaki' | Unknown | - | Blue/Green | - | - | Unknown | - | - | --NR-- |
| 'Hime Ogon Iwa' | Ruh, Peter | Medium | Yellow-Gold | - | - | Unknown | Med-Lavender | July into August | .2002 .2018 |
| 'Hime Setouchi' | Unknown | Medium | Med-Green | - | - | Sport | Med-Lavender | August to October | --NR-- |
| 'Hime Shirokabitan' | Duplicate Name | - | - | - | - | Duplicate | - | - | --NR-- |
| 'Hime Soules' | Unknown | Small | Med-Green | Marginal | White | Unknown | - | - | --NR-- |
| 'Hime Tokudama' | Lantis, Clarence & Ruh, Peter | Small | Blue/Green | - | - | Hybrid | Pale-Lavender | July | .2002 .2018 |
| 'Hime Urajiro Hyaga' | Unknown | Miniature | Med-Green | - | - | Sport | Near-White | August to September | --NR-- |
| 'Hime Yakushima' | Unknown | - | - | - | - | Unknown | - | - | --NR-- |
| 'Himekomachi' | Unknown | Miniature | Med-Green | Medial | White | Sport | - | - | --NR-- |
| 'Hinode Nishiki' | Unknown | Small | Med-Green | Medial | Chartreuse | Sport | - | - | --NR-- |
| 'Hippeastrum' | Unknown | Medium | Med-Green | - | - | Unknown | - | - | --NR-- |
| 'Hirao' | Unknown | - | - | - | - | Unknown | - | - | --NR-- |
| 'Hirao Elite' | Hirao, Shuichi & Ruh, Peter | Medium | Dark-Green | - | - | Unknown | Light-Purple | August to October | .1997 |
| 'Hirao Grande' | Hirao, Shuichi & Ruh, Peter | Medium | Med-Green | - | - | Hybrid | Light-Purple | August to October | .1997 |
| 'Hirao Imperial' | Hirao, Shuichi & Ruh, Peter | Small | Med-Green | - | - | Hybrid | Pale-Lavender | August to October | .1998 |
| 'Hirao Majesty' | Hirao, Shuichi & Ruh, Peter | Large | Med-Green | - | - | Unknown | Pale-Lavender | July | .1997 |
| 'Hirao Monument' | Hirao, Shuichi & Ruh, Peter | Medium | Light-Green | - | - | Hybrid | Pale-Lavender | September | .1997 |
| 'Hirao No. 58' | Hirao, Dr Shuichi | - | - | - | - | Sport | - | - | --NR-- |
| 'Hirao Splendor' | Hirao, Shuichi & Ruh, Peter | Medium | Med-Green | - | - | Unknown | Pale-Lavender | September | .1997 |
| 'Hirao Supreme' | Hirao, Shuichi & Ruh, Peter | Large | Med-Green | - | - | Unknown | Pale-Lavender | - | .1997 |
| 'Hirao T66-01' | Duplicate Name | - | - | - | - | Duplicate | - | - | --NR-- |
| 'Hirao T66-02' | Duplicate Name | - | - | - | - | Duplicate | - | - | --NR-- |
| 'Hirao Tet Large' | Duplicate Name | - | - | - | - | Duplicate | - | - | --NR-- |
| 'Hirao Tet Small' | Duplicate Name | - | - | - | - | Duplicate | - | - | --NR-- |
| 'Hirao Zeus' | Hirao, Shuichi & Ruh, Peter | Large | Blue/Green | - | - | Sport | Near-White | June into July | .1997 |
| 'Hiraoka Nishiki' | Unknown | Small | Med-Green | Streaked | White | Unknown | - | - | --NR-- |
| 'Hi-renjyaku' | Fukatsu, Shinya | Medium | Med-Green | Streaked | White | Hybrid | - | - | --NR-- |
| 'Hitotsuba' | Unknown | Medium | Med-Green | - | - | Sport | Pale-Lavender | July into August | --NR-- |
| 'Hogyoku' | Unknown | - | Blue/Green | - | - | Unknown | Light-Purple | - | --NR-- |
| 'Hokatosei' | Unknown | Small | Med-Green | Marginal | White | Unknown | - | - | --NR-- |
| 'Hokkaido' | Unknown | Large | Light-Green | - | - | Hybrid | - | - | --NR-- |
| 'Hosoba Mizu Gibōshi' | Duplicate Name | - | - | - | - | Duplicate | - | - | --NR-- |
| 'Hosoba Otome Giboshi' | Unknown | Small | - | - | - | Unknown | - | - | --NR-- |
| 'Hosoba Urajiro' | Unknown | - | - | - | - | Unknown | - | - | --NR-- |
| 'Hosoba Yuki-no-Jyou' | Fukatsu, Shinya | Medium | Light-Green | Streaked | Yellow | Hybrid | - | - | --NR-- |
| 'Hotei' | Unknown | - | - | - | - | Unknown | - | - | --NR-- |
| 'Hyakka-no-homare' | Unknown | Medium | Blue/Green | Streaked | White | Unknown | - | - | --NR-- |
| 'Hyuga' | Unknown | - | - | - | - | Unknown | - | - | --NR-- |
| 'Hyuga Gibōshi' | Duplicate Name | - | - | - | - | Duplicate | - | - | --NR-- |
| 'Hyuga Harusame' | Unknown | - | - | - | - | Unknown | - | - | --NR-- |
| 'Hyuga Krajiro' | Duplicate Name | - | - | - | - | Duplicate | - | - | --NR-- |
| 'Hyuga Urajiro' | Duplicate Name | - | - | - | - | Duplicate | - | - | --NR-- |
| 'Hyugabotan' | Unknown | Medium | Med-Green | - | - | Unknown | Med-Lavender | August to September | --NR-- |
|