| Hostaname | RG | SZ | Leaf color | P | F | Origin |
| H. 'H. D. Thoreau' Walden West/C. Purtymun 1999 | R | | blgr | | | 'Sagae' x hypoleuca |
| H. 'Hadspen Blue' Eric Smith/Peter Ruh 1976 | R | SM | bl | | | tardiflora x sieboldiana 'Elegans' |
| H. 'Hadspen Hawk' Eric Smith/BHHS 1988 | R | SM | bl | | | tardiflora x sieboldiana 'Elegans' |
| H. 'Hadspen Heron' Eric Smith/Peter Ruh 1976 | R | SM | bl | | | tardiflora x sieboldiana 'Elegans' |
| H. 'Hadspen Mystique' J. Wilkins/P. & J. Ruh 2003 | R | | dgr | | | unknown |
| H. 'Hadspen Pink' Eric B. Smith/BHHS 1988 | R | S | bl | | | tardiflora x sieboldiana 'Elegans' |
| H. 'Hadspen Samphire' E. Smith/A. Eason 1972/P. Ruh 1997 | R | SM | y>gr | | | sieboldiana 'Elegans' x 'Kabitan' |
| H. 'Hadspen White' Eric B. Smith 1972/P. & J. Ruh 2001 | R | | gr | | Y | sieboldiana hybrid |
| H. 'Hairline Fracture' K. Larsen 2003 | R | ML | gabl,nawe | | | 'Krossa Regal' sport |
| H. 'Haku Chu Han' Japan 1963/AHS 1986 | R | DS | w,dgre | | | sieboldii sport |
| H. 'Hakuyo' H. Hakuyo/K. Watanabe/P. Ruh 2002 | R | MLY | lgr | P | | unknown |
| H. 'Halcyon' Eric B. Smith/BHHS 1988 | R | M | bl | | | tardiflora x sieboldiana 'Elegans' |
| H. 'Halcyon Harmony' Bernie Treichel 2000 | R | | blgr | | | 'Halcyon' hybrid |
| H. 'Hallie's Honor' Lilian Maroushek 1999 | R | M | gry | | | 'Sunlight Sister' hybrid |
| H. 'Halo' Paul Aden 1978 | R | ML | ly,crwe | | | 'Flamboyant' x 'Estelle Aden' |
| H. 'Hampshire County' William & Eleanor Lachman 1993 | R | ML | blgr,we | | | ('Banana Sundae' x 'Sea Drift') x 'Blue Shadows' |
| H. 'Handy Hatfield' Ward 1996 | R | | gr,ye | | | 'Sun Glow' sport |
| H. 'Hanky Panky' Hans Hansen/Shady Oaks 2004 | R | S | dgr,(y>w)e | | | 'Striptease' sport |
| H. 'Hannah Hanson' E. Brodeur/P. Ruh 1997 | R | | gry>gr | | | unknown |
| H. 'Happily Ever After' J. & S. Wilkins 2002 | R | | bl,(y>cr)e | | | "DB-87-1 selfed" x 'Rhapsody in Blue' |
| H. 'Happiness' Eric B. Smith/BHHS 1988 | R | M | bl | | | tardiflora x sieboldiana 'Elegans' |
| H. 'Happy Hearts' Eunice V. Fisher 1973 | R | M | gagr | | | nakaiana hybrid |
| H. 'Happy Valley' William & Eleanor Lachman 1995 | R | ML | blgr,we | | | 'P14-3' x hypoglauca |
| H. 'Harmonica' R. Snyder 1999 | R | | gry,cre | | | 'Tambourine' sport |
| H. 'Harmony' Eric Smith 1961/Paul Aden 1976 | R | SM | bl | | | tardiflora x sieboldiana 'Elegans' |
| H. 'Harpoon' Roy Herold 2000 | R | | gr,(y>cr)e | | | 'Swoosh' x yingeri |
| H. 'Harriette Ward' M. & M. Levy 2000 | R | L | goy | | | 'High Noon' hybrid |
| H. 'Harrison' Jamison Harrison/Peter Ruh 1987 | R | XL | blgr | | | unknown |
| H. 'Harry A. Jacobsen' Robert G. Pierson 1988 | R | XL | blgr,che | | | unknown |
| H. 'Harry Torbert' S. & S. Zolock 2003 | R | | dgr | R | | 'Regal Rhubarb' hybrid |
| H. 'Hart's Tongue' Kuk's Forest 1987 | R | SM | ch>gr | | | 'Kabitan' sport or seedling |
| H. 'Harvest Dandy' Summers 1986/Ruh 1997 | R | M | gr | | | longipes hybrid |
| H. 'Harvest Dawn' A. Summers/P. Ruh 1997 | R | S | dgr | | | 'Paxton's Original' hybrid |
| H. 'Harvest Delight' Summers/Ruh 1997 | R | | gr | | | kikutii selection |
| H. 'Harvest Desire' A. Summers/P. Ruh 1997 | R | | gr | | | longipes x kikutii |
| H. 'Harvest Glow' Walters Gardens 1988 | R | M | ch>y | | | 'Moon Glow' sport |
| H. 'Hawkeye' Lilian Maroushek 1999 | R | S | gr,ye | | | 'Gold Edger' sport |
| H. 'Hawkeye Gold' R. Simmering 2000 | R | | gry,ye | | | 'Gold Edger' sport |
| H. 'Hazel' David Stone/Peter Ruh 1987 | R | D | y>ygr | | | unknown |
| H. 'Headliner' Eunice V. Fisher 1975/AHS 1986 | R | L | gagr | | | 'Willy Nilly' hybrid |
| H. 'Heart and Soul' R. Mortko 2000 | R | | lgr>gry>cr,gre | | | 'Vanilla Cream' sport |
| H. 'Heart Broken' M. Zilis/R. Solberg 2002 | R | D | ch>gr | | | 'Faithful Heart' sport |
| H. 'Heart of Chan' Clarence Owens 1987 | R | S | gr | | | unknown |
| H. 'Heart of Gold' J. Dishon 1996 | R | | lgr>ygo | | | 'Sea Prize' x pycnophylla |
| H. 'Heart Throb' Ken Anderson 1982 | R | SM | bl | | | unknown |
| H. 'Heart's Delight' C. Wilson/B. Hall/Hallson Gardens 2007 | R | | gr | | | 'Warwick Delight' sport |
| H. 'Heartbeat' D. Dean 1999 | R | | gr,cre | | | 'Liberty Bell' x 'Dorset Blue' |
| H. 'Heartleaf' Eunice V. Fisher 1971 | R | M | gr | | | nakaiana hybrid |
| H. 'Hearts Desire' P. & J. Ruh 2002 | R | S | gr,ye | | | 'Blondie' sport |
| H. 'Heartsong' Walters Gardens 1984 | R | SM | gr,nacre | | | 'Candy Hearts' sport |
| H. 'Heaven Scent' Walters Gardens 1988 | R | M | dgr,ye | | Y | plantaginea sport |
| H. 'Heavenly Constellation' E. Elslager 2000 | R | | str,gr,y,w | | | 'Breeders Choice' x 'Maekawa' |
| H. 'Heavenly Green' John Kulpa 1997 | R | M | gr | | Y | 'Seventh Heaven' sport |
| H. 'Heavenly Tiara' Walters Gardens 1998 | R | S | y>ch,we | | | 'Grand Tiara' sport |
| H. 'Heavy Metal' L. Simpers/J. Stallcop 1993 | R | M | blgr | | | unknown |
| H. 'Helen Doriot' David Reath 1982 | R | ML | blgr | | | 'Frances Williams' x sieboldiana 'Elegans' |
| H. 'Helen Field Fisher' Eldren W. Minks 1970 | R | M | gagr | | | 'Fortunei Hyacinthina' hybrid |
| H. 'Heliarc' Kuk's Forest 1986 | R | M | gr,naye | | | 'Fortunei Hyacinthina' sport |
| H. 'Helios' Alex Malloy 2000 | R | M | y,str,w | | | 'Electrum Stater' sport |
| H. 'Helonioides Albopicta' Maekawa 1937/AHS 1987 | R | SM | dgr,cre | | | |
| H. 'Henry Payne' U. Syre-Herz 1996 | R | | dgr | | | unknown |
| H. 'Her Grace' Eunice V. Fisher/AHS 1986 | R | L | gr | | | unknown |
| H. 'Herb Altman' S. & S. Zolock 2002 | R | | blgr | | | sieboldiana 'Elegans' hybrid |
| H. 'Herb Benedict' Jim Wilkins 1990 | R | M | str,blgr,w | | | 'Dorothy Benedict' x 'Tokudama Aureonebulosa' |
| H. 'Herbert' H. Zager/P. Ruh 1996 | R | L | gr | | | sieboldiana seedling |
| H. 'Herbie' H. & D. Benedict 1995 | R | D | dgr,we | | | venusta x (x 'Saishu Jima') |
| H. 'Herbie Rocks' S. & S. Zolock 2005 | R | | gr | R | | 'Colonel Murphy' hybrid |
| H. 'Herkules' Heinz Klose 1991/P. & J. Ruh 2003 | R | VL | blgr | | | sieboldiana hybrid |
| H. 'Herman's Pride' Kuk's Forest/Bob Kuk 2005 | R | | goy | | | 'Gold Regal' x 'Sum and Substance' |
| H. 'Hermes' Alex Malloy 2004 | R | M | gr,str,w | | | (x 'Zebra') selfed |
| H. 'Hertha' Robert P. Savory 1988 | R | SM | dgr,we | | | 'Neat Splash' hybrid |
| H. 'Hey Jude' N. Salamon 2006 | R | | str,gr,we | | | |
| H. 'Hi Ho Silver' Walters Gardens 1997 | R | S | gr,brwe | | | 'Ginko Craig' sport |
| H. 'Hiawatha' Alex Malloy 2002 | R | | str,dgr,w | | | 'Red Ryder' sport |
| H. 'Hidden Agenda' A. Pollock 2005 | R | | gry>gr | PI | | unknown |
| H. 'Hidden Cove' G. Foster/Alex Malloy 1998 | R | S | gr>(gr,yc,str) | | | unknown |
| H. 'Hideko Gowen' Ralph and Dorothy Benedict 1990 | R | L | str,blgr,y | | | 'Dorothy Benedict' selfed |
| H. 'Hideko Tajima' H. & D. Benedict/D. Dean 2004 | R | SM | gr,str,y | PUD | | 'Tsuma Tajima' selfed |
| H. 'Hideout' L. Jones 2006 | R | | w,dgre | | | 'Hidden Cove' sport |
| H. 'High and Mighty' E. Elslager 2003 | R | | str,dgr,gry | | | 'American Tisch Breeder' hybrid |
| H. 'High Country' J. Benfield 2004 | R | M | crw,dgre | | | 'Pathfinder' sport |
| H. 'High Diver' J. Van Ostrand 2005 | R | | dgr,crwe | RB | | unknown |
| H. 'High Fat Cream' Paul Aden 1976 | R | M | str,go | | | 'Aden 270' x 'Aden 275' |
| H. 'High Five' R. Snyder 2002 | R | | dgr,cre | | | 'Antioch' sport |
| H. 'High Heels' E. Elslager 2002 | R | | str,gr,y | | | (x 'Dorothy Benedict') x 'Elatior' |
| H. 'High Kicker' Paul Aden 1987 | R | ML | gr | R | | pycnophylla hybrid |
| H. 'High Noon' Mildred Seaver 2004 | R | L | y>gr | | | unknown |
| H. 'High Society' Hans Hansen/Shady Oaks 2004 | R | S | (y>w),ble | | | 'June' sport |
| H. 'High Style' Ralph H. Benedict 1984 | R | MLL | ygr | | | 'Gold Regal' selfed |
| H. 'High Tide' Hans Hansen 2005 | R | SM | blgr | | | longipes var. latifolia x 'Dorset Blue' |
| H. 'High Wire' R. Lydell 1995 | R | S | gagr | | | unknown |
| H. 'High, Wide and Handsome' E. Elslager 2003 | R | | gry,dgre | | | ('Dorothy Benedict' F1 seedling) hybrid |
| H. 'High-rise' E. Elslager 2003 | R | | gr,ye | | | 'Sea Prize' x hypoleuca |
| H. 'Hilda Wassmann' Rober P. Savory 1985 | R | M | dgr,we | | | unknown |
| H. 'Hillbilly Blues' Tony Avent 1999 | R | | bl | | | 'Hirao 59' x 'Hadspen Blue' |
| H. 'Hime Ogon Iwa' Japan/P. Ruh 2002 | R | S | y | | | unknown |
| H. 'Hime Tokudama' Japan/P. Ruh 2002 | R | S | blgr | | | unknown |
| H. 'Hippodrome' A. Malloy 2001 | R | SM | blgr,crwe | | | 'Christmas Tree Streaked' x 'Halcyon' |
| H. 'Hirao Elite' Hirao/Ruh 1997 | R | S | gr | | | unknown |
| H. 'Hirao Grande' S. Hirao/R. Lydell/P.Ruh 1997 | R | M | gr | | | rectifolia hybrid |
| H. 'Hirao Imperial' S. Hirao/P. Ruh 1998 | R | | dgr | RDB | | unknown |
| H. 'Hirao Majesty' S. Hirao/M. Zilis/P. Ruh 1997 | R | L | dgr | R | | unknown |
| H. 'Hirao Monument' S. Hirao/J. Ruh/P. Ruh 2001 | R | | lgr | | | rupifraga hybrid |
| H. 'Hirao Splendor' S. Hirao/M. Zilis/P. Ruh 1997 | R | SM | lgr | RDB | | kikutii hybrid |
| H. 'Hirao Supreme' S. Hirao/M. Zilis/P. Ruh 1997 | R | VL | lgr | | | unknown |
| H. 'Hirao Zeus' S. Hirao/P. Ruh 1997 | R | ML | blgr | | | unknown |
| H. 'His Honor' Jim & Sandy Wilkins 2000 | R | L | gr,(gry>cr)e | | | "HB-87-1" x "HB-87-1" |
| H. 'Hoarfrost' Eunice V. Fisher/AHS 1986 | R | L | bl | | | 'Frances Williams' hybrid |
| H. 'Holiday White' Fairway Enterprises 1990 | R | SM | w,gre | | | 'Fortunei Aureomarginata' sport |
| H. 'Holly's Dazzler' Herb Benedict 1987 | R | M | gr | | | 'Holly's Honey' selfed |
| H. 'Holly's Gold' Herb & Dorothy Benedict 1991 | R | M | y | | | 'Holly's Honey' selfed |
| H. 'Holly's Green and Gold' G. Holly/E. Fisher/F. Williams/P. Ruh 1997 | R | | blgr,ye | | | unknown |
| H. 'Holly's Honey' G. Holly/AHS 1986 | R | ML | dgr | | | ventricosa hybrid |
| H. 'Holly's Hybrid' G. Holly/E. Fisher/P. Ruh 2002 | R | S | y | | | nakaiana hybrid |
| H. 'Holly's Shine' Ralph H. Benedict 1987 | R | M | dgr | | | 'Holly's Honey' selfed |
| H. 'Holly's Velvet Piecrust' H. & D. Benedict 1995 | R | M | dgr | | | 'Holly's Honey' selfed |
| H. 'Hollywood Lights' Hans Hansen 2005 | R | L | y,gre | | | 'On Stage' sport |
| H. 'Holy Grail' E. & J. Deckert 2004 | R | | blgr,str,y | | | 'Hadspen Blue' sport |
| H. 'Holy Molé' Hans Hansen/T. Avent 2003 | R | | ch,dgre | | Y | 'Guacamole' sport |
| H. 'Holy Mouse Ears' Mark Zilis/E. & J. Deckert 2006 | R | | (y>crw),blgre | | | 'Royal Mouse Ears' sport |
| H. 'Homestead' M. Zilis/P. Ruh 1997 | R | | str,blgr,y | | | sieboldiana 'Elegans' sport |
| H. 'Honey' Robert P. Savory 1977 | R | M | y | | | montana hybrid |
| H. 'Honey Do' Belle Gardens 1994 | R | S | y>cr,gre | | | 'Little Jim' x 'Little Jim' |
| H. 'Honey Hill Balloon Bouquet' M. Erb 1999 | R | M | gr | | | seedling x seedling |
| H. 'Honey Hill Blue Blood' M. Erb 2003 | R | M | bl | | | "unnamed seedlings" hybrid |
| H. 'Honey Hill Bubble Up' M. Erb 2003 | R | SM | dgr | | | "unnamed seedlings" hybrid |
| H. 'Honey Hill Eureka' M. Erb 2003 | R | L | chy>goy | | | "unnamed seedlings" hybrid |
| H. 'Honey Hill Night Light' M. Erb 1999 | R | S | ch | | | unknown |
| H. 'Honey Hill Pearl Essence' M. Erb 2003 | R | | lbl | | | "unnamed seedlings" hybrid |
| H. 'Honey Hill Piece o' Pie' M. Erb 2003 | R | L | gr | | | "unnamed seedlings" hybrid |
| H. 'Honey Hill Pinking Shears' M. Erb 2003 | R | S | blgr | | | "unnamed seedlings" hybrid |
| H. 'Honey Hill Pins and Needles' M. Erb 1999 | R | S | gagr | | | ventricosa hybrid |
| H. 'Honey Hill Pledge Allegiance' M. Erb 2003 | R | VL | bl | | | "unnamed seedlings" hybrid |
| H. 'Honey Hill Pucker Up' M. Erb 1999 | R | S | ch | | | unknown |
| H. 'Honey Hill Shimmer and Shimmy' M. Erb 1999 | R | M | dblgr,cre | | | 'Shady Lady' hybrid |
| H. 'Honey Hill Sidewalk Chalk' M. Erb 2003 | R | VL | ly | | | "unnamed seedlings" hybrid |
| H. 'Honey Hill Stainless Steel' M. Erb 2003 | R | M | dgr | | | "unnamed seedlings" hybrid |
| H. 'Honey Hill Tokens' M. Erb 2003 | R | S | br,crwe | | | "unnamed seedlings" hybrid |
| H. 'Honey Hill Water Ladle' M. Erb 1999 | R | L | blgr | | | 'Galaxy' x 'Elegans' |
| H. 'Honey Hill Wayward Heart' M. Erb 2003 | R | SM | bl | | | "unnamed seedlings" hybrid |
| H. 'Honey Hill Wrinkled Rainslicker' M. Erb 1999 | R | L | gr | | | 'Fragrant Bouquet' x hypoleuca |
| H. 'Honey Moon' Ken Anderson 1982 | R | S | ych | | | venusta x 'August Moon' |
| H. 'Honeybells' Alex Cummings 1950/AHS 1986 | R | M | gr | | Y | plantaginea x sieboldii |
| H. 'Honeycomb' Alex Malloy 2000 | R | | str,gr,cr | | | 'Honeysong' sport |
| H. 'Hoosier Dome' O. Petryszyn 1998 | R | | gr | | | 'Niagara Falls' x ('Silver Bowl' x 'Muriel Seaver Brown') |
| H. 'Hoosier Harmony' Indianapolis Hosta Society 1995 | R | ML | y,gre | | Y | 'Royal Standard' sport |
| H. 'Hope' H. Hansen/Shady Oaks Nursery 1999 | R | S | gr,ye | | | 'Baby Bunting' sport |
| H. 'Hoplite' Alex Malloy 2000 | R | | lgr,crwe | | | unknown |
| H. 'Hot Button' E. Elslager 2005 | R | | gry,lye | | | (x 'Galaxy') seedling |
| H. 'Hot Diggity Dog' E. Elslager 1998 | R | | gry,cre | | | 'Sea Prize' hybrid |
| H. 'Hot Flash' Herb & Dorothy Benedict 1991 | R | L | str,gr,y,w | GR | | 'Dorothy Benedict' selfed |
| H. 'Hot Lips' H. Gowen/F. Riehl/R. Benedict 1993 | R | S | w,gre | R | | unknown |
| H. 'Hot Wheels' E. Elslager 2003 | R | | dgr,goe | | | 'Kevin Vaughn' hybrid |
| H. 'Hottie' E. Elslager 2002 | R | | str,gr,y,cr | | | (x 'Galaxy') x hypoleuca |
| H. 'Hottsy Tottsy' S. Hottovy/Monrovia Nursery/L. Hottovy 2004 | R | M | ly | | | unknown |
| H. 'Housatonic' Henry Payne/AHS 1986 | R | L | blgr>dgr | | | unknown |
| H. 'Hub City' M. Zilis 2003 | R | M | gr | | | 'September Sun' sport |
| H. 'Hubba-hubba' E. Elslager 2005 | R | | dgr,str,lgr,y,cr | | | "'Dorothy Benedict' F1 sport" seedling |
| H. 'Hudson River' Alex Malloy 2001 | R | S | gr,cre | | | 'Beatrice' x 'Galaxy' |
| H. 'Hulkster' R. Simmering 2003 | R | | dgr | | | 'Blue Umbrellas' hybrid |
| H. 'Humdinger' H. & D. Benedict 1995 | R | D | cr,dgre | | | 'Yellow Splash' selfed |
| H. 'Humility' R. Snyder 1997 | R | S | dgr | | | 'Hertha' sport |
| H. 'Hummingbird Wings' K. Walek 1996 | R | | ygr>ygo | | | 'Rosanne' x 'Little White Lines' |
| H. 'Humor' L. Davidson/P. Ruh 1998 | R | | gr | | | 'Lancifolia' hybrid |
| H. 'Hunters Ridge' J. & S. Wilkins 2002 | R | | blgr,cre | | | 'Yellow Splash' x 'Dorset Blue' |
| H. 'Huron' Van Wade 2007 | R | | blgr | | | unknown |
| H. 'Huron Blue' Pauline Banyai 1990 | R | | blgr | | | 'Dorothy Benedict' hybrid |
| H. 'Hurrah' Peter Ruh 1991 | R | S | cry,blgre | | | 'Wahoo' sport |
| H. 'Hush Puppie' Tony Avent 2005 | R | S | gr,ye | | | (x (x 'Beatrice')) x venusta |
| H. 'Hutch' R.Stephens 1995 | R | | lgr | | | (x 'Wolcott') x 'Piedmont Gold' |
| H. 'Hydon Gleam' Arthur George/P. Ruh 1998 | R | S | ch | | | 'Paxton's Original' x 'Ogon Koba' |
| H. 'Hydon Sunset' George/BHHS 1988 | R | DM | y>gr | | | gracillima x 'Wogon' |