| Hostaname | RG | SZ | Leaf color | P | F | Origin |
| H. 'Dab a Green' Mark Zilis 2006 | R | ML | goy,gre | | | 'Abba Dabba Do' sport |
| H. 'Daddy Boomer' Ed Elslager 2005 | R | | blgr,ye | | | 'Baby Boomer' sport |
| H. 'Daily Joy' Eunice V. Fisher 1973 | R | ML | gr | | | 'Crispula' hybrid |
| H. 'Daisy Doolittle' Randy Goodwin 2003 | R | D | gr,crwe | | Y | "small streaked plant" sport |
| H. 'Dale's Blue Gray' Lillian Maroushek/Ron Snyder 1998 | R | ML | blgr | | | unknown |
| H. 'Dalton's Pick' Kent Terpening 2005 | R | M | y | | | unknown |
| H. 'Dance with Me' Hans Hansen/Shady Oaks 2002 | R | ML | y,gre | | | 'Summer Music' sport |
| H. 'Dancing Cobra' R. Vincun 2003 | R | | gr,crwe | | | unknown |
| H. 'Dancing Flame' L. Jones 2006 | R | | gr,we | | | 'Saint Elmo's Fire' sport |
| H. 'Dancing in the Rain' Walters Gardens 2004 | R | M | crw,dgre | | | 'Blue Umbrellas' sport |
| H. 'Dancing Queen' Kent Terpening/A. Scheer 2005 | R | L | y>ly | | | 'Split Personality' seedling |
| H. 'Dancing with the Stars' E. Elslager 2005 | R | | dgr,str,gr,y | | | 'Super Star' seedling |
| H. 'Dandy Randy' Stuart Asch 2004 | R | L | dgr | | | 'Dorothy Benedict' selfed |
| H. 'Dandy's Pride' E. Elslager 1999 | R | | dgr,ye | | | 'Dapper Jim' sport |
| H. 'Daniel' Henry Weissenberger 1986 | R | S | bl | | | 'Blue Cadet' hybrid |
| H. 'Dapper Jim' Ed Elslager 1999 | R | | str | | | 'Little Jim' hybrid |
| H. 'Dapra's Delight' W. Zumbar/S. Dapra 2000 | R | D | gr,we | | | unknown |
| H. 'Dark Ages' Alex Malloy 2004 | R | M | dgr | GR | | 'Dark Nebula' seedling |
| H. 'Dark Forest' R. Goodwin 2005 | R | S | dgr,crwe | | | unknown |
| H. 'Dark Nebula' A. Malloy 1999 | R | M | str,blgr,cr | | | unknown |
| H. 'Dark Shadows' Hans Hansen 2004 | R | L | dgr,gre | | Y | unknown |
| H. 'Dark Star' Roy Herold 1999 | R | SM | blgr,cre | | | 'Swoosh' x 'Hadspen Heron' |
| H. 'Dark Tower' Dick & J. Ward 1996 | R | L | dgr | | | 'Sagae' hybrid |
| H. 'Dark Victory' Robert P. Savory 1977 | R | SM | dgr | | | 'Lancifolia Minor' hybrid |
| H. 'Dark Waters' F. Rogers 2005 | R | | dgr | | | unknown |
| H. 'Dartmoor Forest' A. Eason/A. & R. Bowden/P. & J. Ruh 2005 | R | L | dgr | | | rectifolia hybrid |
| H. 'Dauntless' P. & J. Ruh 2002 | R | M | blgr | | | sieboldiana hybrid |
| H. 'David A. Haskell' Allen C. Haskell/A. Malloy 1999 | R | | gr,ye | | | 'Sum and Substance' sport |
| H. 'David F. Mahoney' S. Chamberlain 2001 | R | XL | blgr | | | unknown |
| H. 'David Reath' D. Reath/Klehm 1998 | R | L | dgr,ye | | | 'Gold Regal' sport |
| H. 'Dawes' D. & J. Ward 2005 | R | | crw,dgre | | | 'Pin Stripe Sister' seedling |
| H. 'Dawn' BHHS/S. Bond 2000 | R | S | y | | | unknown |
| H. 'Dawn Treader' Alex Malloy 2000 | R | D | py,grye | | | 'Aspen Gold' sport |
| H. 'Dawn's Early Light' Olga Petryszyn 1998 | R | ML | y>ch | | | 'Sea Fire' hybrid |
| H. 'Dax' Dirk Dupré 2006 | R | M | gr,dgre | | | 'Devon Green' sport |
| H. 'Day Dream' Gary Trucks 1998 | R | | | | | 'Sea Dream' sport |
| H. 'Day's End' Mark Zilis 1999 | R | ML | gr,ye | | | 'Daybreak' sport |
| H. 'Daybreak' Paul Aden 1986 | R | ML | y | | | "Japanese seedling" sport |
| H. 'Dazzling' E. Elslager 2001 | R | | str,gr,y | | | 'Dorothy Benedict' x 'Maekawa' |
| H. 'Deane's Dream' R. Solberg 2000 | R | M | blgr | PU | | 'Blue Arrow' x 'Sea Fire' |
| H. 'Dear Heart' Eldren W. Minks 1975 | R | SM | blgr | | | nakaiana x 'Blue Boy' |
| H. 'Debutante' Paul Aden 1978 | R | M | str,blgr,y | | | 'Wahoo' x 'Flamboyant' |
| H. 'Deceiver' Stuart Asch 2003 | R | | lgr,str,y,cr | | | 'William Lachman' x 'Permanent Wave' |
| H. 'Decorata' Japan/Liberty Hyde Bailey 1930/AHS 2002 | R | M | dgr,we | | | unknown |
| H. 'Dee's Golden Jewel' Kevin Walek 1996 | R | M | y | | | 'Royal Standard' x 'Galaxy' |
| H. 'Deep Blue Sea' Charly Seaver 1994 | R | ML | bl | G | | 'Blue Moon' hybrid |
| H. 'Deep Pockets' Bob Hird 2005 | R | | dgr | | | unknown |
| H. 'Déjà Blu' Walters Gardens/K. Hurd 2005 | R | | blgr,cr,che | | | 'Blue Boy' sport |
| H. 'Delaware River' Alex Malloy 2005 | R | | blgr | R | | unknown |
| H. 'Delia' Richard & Mary Ford 1995 | R | D | y,gre | | | 'Golden Prayers' sport |
| H. 'Deliverance' Tony Avent 2005 | R | | blgr,ye | | | (('Swoosh' x longissima) x 'Red Neck Heaven') x 'Elvis Lives' |
| H. 'Delta Desire' M. Zilis/M. Vanous 2003 | R | ML | y | | | 'Delta Dawn' sport |
| H. 'Delta Pride' M. Zilis/T. Toman 2003 | R | ML | str,y,w,ye | | | 'Delta Dawn' sport |
| H. 'Deluxe Edition' Walden West/J. Hyslop 1999 | R | VL | dgr | | | unknown |
| H. 'Demetriou's Gold' B. & J. Demetriou 2001 | R | | gry | | | unknown |
| H. 'Denali' R. Goodwin 2005 | R | | dgr,crwe | | | unknown |
| H. 'Density' Fairway Enterprises/Minks 1990 | R | ML | blgr | | | densa sport |
| H. 'Designer Genes' Arthur Wrede 2005 | R | M | goy>gry | R | | 'Miss Susie' hybrid |
| H. 'Destiny' C. Helsley 2004 | R | | gr,ye | | | 'Abiqua Recluse' sport |
| H. 'Devil's Advocate' Walters Gardens/Amy Bergeron 2007 | R | | blgr,gre | | | 'Blue Angel' sport |
| H. 'Devon Blue' Ann & Roger Bowden 1988 | R | ML | bl | | | tardiflora x sieboldiana 'Elegans' |
| H. 'Devon Discovery' J. Goaters/A. & R. Bowden/P. & J. Ruh 2005 | R | | dgr | | | unknown |
| H. 'Devon Gold' A. & R. Bowden/P. & J. Ruh 2005 | R | DS | gry | | | unknown |
| H. 'Devon Green' A. & R. Bowden/P. & J. Ruh 2005 | R | M | dgr | PUD | | 'Halcyon' sport |
| H. 'Devon Mist' A. & R. Bowden/P. & J. Ruh 2005 | R | SM | gr | | | 'Buckshaw Blue' hybrid |
| H. 'Devon Tor' A. & R. Bowden/P. & J. Ruh 2005 | R | ML | gr | | | montana seedling |
| H. 'Dew Drop' Walters Gardens 1988 | R | DS | dgr,nawe | | | 'Gold Drop' sport |
| H. 'Dewed Steel' Danny Van Eechaute 2006 | R | | blgr | PUB | | unknown |
| H. 'Dewline' Chet Tompkins/P. & J. Ruh 2002 | R | ML | gr,we | | | unknown |
| H. 'Diadem' R. Snyder 2002 | R | | dgr,ye | | | 'King Tut' sport |
| H. 'Diamond Jubilee' R. Savory/D. Savory 2006 | R | | blgr | | | 'Vilmoriniana' seedling |
| H. 'Diamond Tiara' T&Z Nursery/Mark Zilis 1985 | R | SM | gr,crwe | | | 'Golden Tiara' sport |
| H. 'Diana Remembered' John Kulpa 1997 | R | M | gr,crwe | | Y+ | 'Seventh Heaven' sport |
| H. 'Dianne' Clarence Owens 1985 | R | M | str,y,ch | | | 'August Moon' sport |
| H. 'Dick Ward' Handy Hatfield 1991 | R | ML | y,dgre | | | 'Zounds' sport |
| H. 'Dick's Delight' R. Rossing 1998 | R | S | lgr,we | | | nakaiana hybrid |
| H. 'Diddily-squat' G. Johnson 2004 | R | S | gr | | | 'Quilting Bee' seedling |
| H. 'Dim Sum' Belle Gardens 1994 | R | D | gr>y | | | longipes var. latifolia hybrid |
| H. 'Dimension X' Alex Malloy 2003 | R | | gr | GR | | 'Pin Stripe Sister' hybrid |
| H. 'Dimity' Tom Micheletti 1998 | R | | | | | 'Baby Kim' hybrid |
| H. 'Dimpled Chad' E. Elslager 2001 | R | | str,gr,y | | | 'Sea Prize' hybrid |
| H. 'Dionysos' Alex Malloy 2000 | R | | gr | | | unknown |
| H. 'Dippity Dew' Jim Schwarz 1999 | R | ML | blgr,ye | | | 'Peedee Dew Catcher' sport |
| H. 'Dipsy Doodle' E. Elslager 2000 | R | S | str,gr,cr,gry,cre | STR | | 'William Lachman' hybrid |
| H. 'Distinction' Eunice Fisher/Peter Ruh 1998 | R | L | gr | | | 'Sea Frolic' x 'Donahue Piecrust' |
| H. 'Diva' R. O'Harra/Russ O'Harra Hosta Society 1999 | R | ML | y | | | 'Elatior' seedling |
| H. 'Dixie Chick' Tony Avent 1999 | R | DS | gr,cre | | Y | 'Masquerade' x 'Invincible' |
| H. 'Dixie Chickadee' Tony Avent 2007 | R | | cr,spe,gr,dgre | | | 'Dixie Chick' sport |
| H. 'Dixie Cups' Tony Avent 2007 | R | | blgr | | | 'Korean Snow' x 'Abiqua Drinking Gourd' |
| H. 'Dixie Joy' Paul Aden 1983 | R | S | str,y,gr | | | 'Gala' x 'Halo' |
| H. 'Dixie Pixie' B. Martin 2004 | R | S | blgr,we | | | 'Fair Maiden' sport |
| H. 'Dixie Queen' Robert P. Savory 1982 | R | DS | gr | | | nakaiana hybrid |
| H. 'Dixieland Delight' Tony Avent 2007 | R | | gr,ye | | | ('Swoosh' x 'Green Fountain') x 'Gold Regal' |
| H. 'Do Little' E. Schulz 2005 | R | | gr,ye | | | 'Abba Dabba Do' sport |
| H. 'Do Wop' Tony Avent 2007 | R | | blgr | | | 'Fragrant Blue' x 'Halcyon' |
| H. 'Doctor Fu Manchu' H. Sugita/Peter Ruh 1998 | R | M | dgr | R | | longipes x pycnophylla |
| H. 'Doctor Reath' D. Reath/P. Ruh 1997 | R | L | (mot,blgr,y)>blgr | | | sieboldiana sport |
| H. 'Domaine de Courson' Ignace Van Doorslaer/Diane Grenfell 1996 | R | XL | dgr | | | 'Sum and Substance' sport |
| H. 'Don Quixote' M. Seaver 2004 | R | ML | dgr,str,y | R | | 'Don Stevens' sport |
| H. 'Don Stevens' Mildred Seaver 2004 | R | M | dgr,cre | | | 'Neat Splash' hybrid |
| H. 'Donahue Piecrust' Thomas Donahue/P. Ruh 1999 | R | L | gr | | | montana hybrid |
| H. 'Dorothy' Williams/AHS 1986 | R | SML | dgr | | | 'Decorata' x 'Fortunei' |
| H. 'Dorothy Benedict' Ralph H. Benedict 1983 | R | SML | str,blgr,y | | | 'Frances Williams' selfed |
| H. 'Dorothy's Child' Rod Kuenster 2007 | R | | gr,str,y,w | | | 'Dorothy Benedict' x 'Hot Flash' |
| H. 'Dorset Blue' Eric Smith/Paul Aden 1977 | R | DS | bl | | | tardiflora x sieboldiana 'Elegans' |
| H. 'Dorset Charm ' Eric Smith/Peter Ruh 1990 | R | SM | blgr | | | tardiflora x sieboldiana 'Elegans' |
| H. 'Dorset Flair' Eric Smith/Peter Ruh 1990 | R | M | blgr | | | tardiflora x sieboldiana 'Elegans' |
| H. 'Dorset Glenn' R. Kuenster 2005 | R | | gry,str,crw | | | 'Dorset Clown' x (x 'Dorset Clown') |
| H. 'Double Eagle' D. Dean 2000 | R | | gry | | | 'Sagae' hybrid |
| H. 'Double Edge' Paul Aden 1982 | R | ML | gr,(y+w)e | | | 'Flamboyant' x 'Fascination' |
| H. 'Doublemint' E. Elslager 2001 | R | | str,gr,y,w | | | 'Herb Benedict' x hypoleuca |
| H. 'Doubloons' M. Zilis/W. Zumbar 2003 | R | ML | y | | | 'Alvatine Taylor' sport |
| H. 'Dr John' S. & S. Zolock 2007 | R | | dgr | | | "seedling" x "seedling" |
| H. 'Dragon Fire' Wyatt Lefever/Bob Solberg 2005 | R | VL | blgr | PU | | 'Riptide' seedling |
| H. 'Dragon Wings' W. Lefever 1996 | R | XL | gr | | | montana x 'Fortunei' |
| H. 'Dragon's Blood' H. Sugita/P. Ruh 1998 | R | M | gr | R | | longipes x pycnophylla |
| H. 'Drawn Butter' Belle Gardens 1994 | R | S | grgo>go | | | 'Whoopee' hybrid |
| H. 'Dream Angel' M. Laico 2003 | R | | ch>goy | | | unknown |
| H. 'Dream Weaver' Bonnie Ruetenik/Kevin Walek 1996 | R | ML | crw,blgre | | | 'Great Expectations' sport |
| H. 'Dreamland' Alex Malloy 2003 | R | | str,gr,w | | | 'Pink Panther' hybrid |
| H. 'Dress Blues' William Zumbar 1995 | R | ML | blgr,crwe | | | "Breeders Choice F1" x 'Halcyon' |
| H. 'Dressed in Green' Danny Van Eechaute 2004 | R | M | gr | | | unknown |
| H. 'Drip Drop' Walters Gardens 1988 | R | SM | ch,ye | | | 'Gold Drop' sport |
| H. 'Drummer Boy' Steve C. Moldovan 1983 | R | SM | gr | | | nakaiana x 'Ruffled Queen' |
| H. 'Ducet' Alex Malloy 2004 | R | S | goy>gr | | | 'Electrum Stater' seedling |
| H. 'Duchess' Robert P. Savory 1982 | R | SM | dgr,(ch>w)e | | | (x nakaiana) sport |
| H. 'Duke' Robert P. Savory 1988 | R | XL | gr | | | unknown |
| H. 'Dumb Blonde' R. Simmering 2001 | R | | gry,lye | | | 'Blond Elf' sport |
| H. 'Dumbo' Dennis Savory 2007 | R | | blgr | | | 'Blue Mammoth' sport |
| H. 'DuPage Delight' Mark Zilis 1990 | R | ML | y,blgre | | | 'Frances Williams' sport |
| H. 'Dust Devil' Mark Zilis 1999 | R | M | dgr,(ch>cr)e | | | 'Whirlwind' sport |
| H. 'Dustin' David Stone/Peter Ruh 1988 | R | M | gr,we | | | unknown |
| H. 'Dustin More' R. Snyder 2003 | R | | str,dgr,crw,cre | | | 'Dustin' sport |