| Hostaname | RG | SZ | Leaf color | P | F | Origin |
| H. 'Sabertooth' R. Woodford 2000 | R | | blgr | | | 'Halcyon' hybrid |
| H. 'Sadi' F. Nyikos 2000 | R | | y | | | 'Birchwood Parky's Gold' x 'Love Pat' |
| H. 'Sagae' K. Watanabe 1996 | R | VL | dgr,(y>cr)e | | | fluctuans sport |
| H. 'Sailor's Warning' Charly Seaver 1995 | R | S | str,lgr,y,w | R | | 'Flamboyant' hybrid |
| H. 'Sails at Sunset' E. Elslager 2001 | R | | gry,dgre | | | 'Dorothy Benedict' x hypoleuca |
| H. 'Sails Ho' R. Lydell 1995 | R | | str,gr,w | | | 'Krossa Regal' sport |
| H. 'Saint Elmo's Fire' Robert Solberg 1995 | R | SM | y>gr,we | | | 'Sea Fire' sport |
| H. 'Saishu Jima' Japan/J. Craig/A. Summers/P. Ruh 2002 | R | DS | gr | | | unknown |
| H. 'Salem' L. Simpers/P. Ruh 2000 | R | | gry,cr,spe | | | "Lucy's Breeder 36-39" x montana |
| H. 'Sally and Bob' Clarence Owens 1994 | R | L | str,gr,w,y | | | 'William Lachman' x 'Fascination' |
| H. 'Salsa' A. Roozekrans 2002 | R | | lgr,dblgre | | | 'Guacamole' sport |
| H. 'Salty Dog' J. Stadden 2003 | R | | gry,gre | | | 'Emerald Tiara' hybrid |
| H. 'Salus' Alex Malloy 2004 | R | | | | | unknown |
| H. 'Salute' H. & D. Benedict 1995 | R | SM | blgr | | | "Dorset Blue F4" selfed |
| H. 'Sam Spade' E. Schulz 2002 | R | | gr,(y>cr)e | | | 'Swoosh' hybrid |
| H. 'Sam-Tina Gold' J. Orlando 1998 | R | | lgr>w | | | 'Gold Standard' sport |
| H. 'Samual Blue' Gus Krossa/Peter Ruh 1981 | R | L | bl | | | unknown |
| H. 'Sandhill Crane' G. Johnson 2004 | R | | gr,cre | | | "F-2 seedling of longissima from Japan" sport |
| H. 'Santa Claus' Alex Malloy 2003 | R | | gr,we | | | 'Christmas Tree Gala' hybrid |
| H. 'Sara' Bob Kuk 1994 | R | M | y | | | 'Rippling Waves' hybrid |
| H. 'Sara's Sensation' P. & L. Hofer 1998 | R | | gr,ye | | | 'Frances Williams' sport |
| H. 'Sarah Farmer' Burton W. F. Trafton Jr. 1975 | R | M | str,gr,y | | | 'Fortunei Aureomarginata' sport |
| H. 'Sarah Jane' Dick & Jane Ward 1997 | R | M | gr,ye | | | 'Gold Standard' sport |
| H. 'Sarah Katherine' R. Simmering/E. Kelley 2005 | R | | | | | 'Spritzer' seedling |
| H. 'Sarah Kennedy' Richard and Mary Ford 2004 | R | S | dgr,we | | | 'Ginko Craig' sport |
| H. 'Sasquatch' H. Sugita/P. Ruh 1998 | R | L | blgr | | | unknown |
| H. 'Sassy' Paul Aden 1987 | R | S | gr,we | | Y | 'Art Shane' x 'Invincible' |
| H. 'Satin Beauty' Eunice V. Fisher/AHS 1986 | R | L | gr | | | unknown |
| H. 'Satin Flare' Eunice V. Fisher 1971 | R | L | blgr>gr | | | 'Golden Anniversary' hybrid |
| H. 'Satisfaction' C. Wasitis/Bridgewood Gardens 2000 | R | L | dgr,ye | | | 'Piedmont Gold' sport |
| H. 'Savannah' Natalie Suggs/Zilis 1999 | R | ML | dgr,cre | | Y+ | "seedling" sport |
| H. 'Savannah Emerald' Mark Zilis 2003 | R | ML | gr | | Y | 'Savannah' sport |
| H. 'Savannah Supreme' Mark Zilis 2003 | R | ML | str,gr,cr,w | | Y | 'Savannah' sport |
| H. 'Saw Mill' Alex Malloy 1999 | R | | lgr | | | 'Outhouse Delight' hybrid |
| H. 'Saybrook Surprise' R. Lydell 1998 | R | ML | y,gre | | | (x 'Perry's True Blue') sport |
| H. 'Sayuri' F. Nyikos 2007 | R | | gr | | | 'Azure Snow' x 'Chopsticks' |
| H. 'Scally Cap' Josh Stadden 2003 | R | | gr | PUB | | "'Bravo' F1 seedling" hybrid |
| H. 'Scaredy Cat' L. Jones 2006 | R | | goy | | | 'Cry Baby' seedling |
| H. 'Scarlet O'Hara' U. Syre-Herz 1996 | R | | y>lgr | | | 'Peedee Red Legs' x 'Peedee Gold Flash' |
| H. 'Scarlet Ribbons' E. Elslager 2002 | R | | gr,we | | | 'William Lachman' hybrid |
| H. 'Schneekuppe' H. Klose 1987/P. Ruh 2006 | R | | blgr | | | |
| H. 'Scooter' Ralph & Dorothy Benedict 1990 | R | SM | dgr,cre | | | 'Yellow Splash' hybrid |
| H. 'Sea Beacon' M. Seaver 2004 | R | ML | lgr,cre | | | unknown |
| H. 'Sea Blue' Mildred Seaver 1978 | R | M | blgr | | | 'Frances Williams' hybrid |
| H. 'Sea Bunny' Mildred Seaver 1986 | R | M | chy | | | unknown |
| H. 'Sea Current' M. Seaver/A. Malloy 2001 | R | | gr | | | 'Sea Frolic' hybrid |
| H. 'Sea Dream' Mildred Seaver 1984 | R | ML | gr>y,we | | | 'Neat Splash' hybrid |
| H. 'Sea Drift' Mildred Seaver 1978 | R | XL | dgr | | | 'Green Piecrust' hybrid |
| H. 'Sea Ebony' Mildred Seaver/Robert Solberg 1991 | R | L | dgr | | | unknown |
| H. 'Sea Fire' Mildred Seaver 2004 | R | M | y>ch | | | unknown |
| H. 'Sea Foam' Mildred Seaver 1978 | R | L | gr>ly | | | 'Frances Williams' hybrid |
| H. 'Sea Frolic' Mildred Seaver 2004 | R | ML | blgr | | | 'Donahue Piecrust' seedling |
| H. 'Sea Gold' Mildred Seaver 1985 | R | M | y | | | 'Ledi Lantis' hybrid |
| H. 'Sea Gold Star' Mildred Seaver 1984 | R | ML | ch>ly | | | 'Wagon Wheels' hybrid |
| H. 'Sea Grotto' Mildred Seaver/Peter Ruh 1991 | R | M | blgr | | | unknown |
| H. 'Sea Gulf Stream' M. Zilis/M. Seaver/A. Malloy 1999 | R | M | chy>goy | | | 'Sea Gold Star' sport |
| H. 'Sea Gull' Mildred Seaver 2004 | R | S | y | | | unknown |
| H. 'Sea Lightning' Mildred Seaver 1981 | R | M | str,dgr,w,mot | | | 'Neat Splash' hybrid |
| H. 'Sea Lotus Leaf' Mildred Seaver 1985 | R | ML | gr | | | 'Wagon Wheels' hybrid |
| H. 'Sea Monster' Mildred Seaver 1978 | R | XL | blgr | | | 'Brookwood Blue' hybrid |
| H. 'Sea Octopus' Mildred Seaver 1981 | R | S | gr | | | unknown |
| H. 'Sea Sprite' Mildred Seaver 1978 | R | S | ch>ly,dgre | R | | 'Kabitan' hybrid |
| H. 'Sea Sunrise' Mildred Seaver 1982 | R | S | str,gr,cr,y | | | 'Neat Splash' hybrid |
| H. 'Sea White Gold' M. Seaver/V. Wade 1999 | R | | cry | | | unknown |
| H. 'Sea Wiggles' Mildred Seaver 1981 | R | DS | ly | | | 'Sea Sprite' hybrid |
| H. 'Sea Yellow Sunrise' Mildred Seaver 1985 | R | SM | y | | | 'Sea Sunrise' sport |
| H. 'Searchlight' Alex Malloy 2001 | R | | str,dgr,w | | | 'Torchlight' sport |
| H. 'Seaside Splendor' S. Tylinkski 2003 | R | | blgr,str,w | | | 'Sea Prize' x 'Tokudama' |
| H. 'Second Wind' John Kulpa 1991 | R | M | dgr | | | 'Whirlwind' sport |
| H. 'Secret Love' Jan van den Top/Danny Van Eechaute 2004 | R | | bl,(y>w)e | | | 'Fragrant Blue' sport |
| H. 'Seducer' Stuart Asch 2004 | R | | dgr,goye | | | 'Dorothy Benedict' selfed |
| H. 'See Saw' Summers/AHS 1986 | R | S | dgr,we | | | 'Undulata Erromena' sport |
| H. 'Seersucker' R. Savory/D. Savory 2004 | R | | | | | 'Tokudama' seedling |
| H. 'Semperaurea' Japan/K. Foerster/P. & J. Ruh 2003 | R | L | ygr>y | | | unknown |
| H. 'Seneca' M. Tobey/A. Malloy/S. Chamberlain 2000 | R | D | ch,lgre | | | 'Fortunei Hyacinthina' sport |
| H. 'Sentimental Journey' Greg Johnson 2004 | R | M | ch,(ch>go)e | | | 'Piedmont Gold' sport |
| H. 'Sentinels' Frances Williams/Connie Williams 1986 | R | M | dgr | | | sieboldii x 'Lancifolia' |
| H. 'September Sun' Robert Solberg 1985 | R | ML | y,dgre | | | 'August Moon' sport |
| H. 'September Surprise' Walters Gardens 1997 | R | ML | chy,gre | | | 'August Moon' sport |
| H. 'Serapis' Alex Malloy 2000 | R | S | str,gr,w | | | 'Go for Broke' sport |
| H. 'Serendipity' Paul Aden 1978 | R | SM | blgr | | | 'Blue Cadet' x 'Tokudama' |
| H. 'Serendipity Singer' Rick Goodenough 2004 | R | S | goy,dgre | | | 'Serendipity' sport |
| H. 'Serene' Eldren W. Minks 1983 | R | M | blgre,y | | | 'Tokudama Aureonebulosa' sport |
| H. 'Serenity' Pauline Banyai 1986 | R | M | blgre,y | | | |
| H. 'Sergeant Pepper' Bridgewood Gardens 2001 | R | M | gr,grye | | | unknown |
| H. 'Seto-no-aki' K. Watanabe/P. Ruh 2002 | R | M | dgr | | | unknown |
| H. 'Seven-Eleven' K. Squires/P. Ruh 1996 | R | SM | lgr | | | unknown |
| H. 'Seventh Heaven' John Kulpa 1994 | R | ML | str,dgr,w | | Y+ | 'Kevin Vaughn' x plantaginea |
| H. 'Shade Beauty' Paul Aden 1982 | R | DS | y/ch,we | | | "seedling" x "Golden Tardiana" |
| H. 'Shade Fanfare' Paul Aden 1986 | R | M | ch,cre | | | 'Flamboyant' sport |
| H. 'Shade Finale' Randy Goodwin 2005 | R | S | dgr,crwe | R | | unknown |
| H. 'Shade Master' Paul Aden 1982 | R | M | y | | | 'White Vision' x 'Golden Rajah' |
| H. 'Shade Parade' Randy Goodwin 2005 | R | S | y,crwe | | | (x 'Sea Prize') sport |
| H. 'Shades of Mercy' Ron Snyder 1998 | R | | str,we | | | 'Allan P. McConnell' sport |
| H. 'Shadow Waltz' William & Eleanor Lachman 1995 | R | L | gr,(y>lgr)e | | | ('Banana Sundae' x 'Sea Drift') x 'Blue Shadows' |
| H. 'Shadow's Web' E. Minks/A. Malloy 2000 | R | | gry,blgre | | | unknown |
| H. 'Shady Affair' G. Johnson/Russ O'Harra Hosta Society 2003 | R | M | blgr | | Y | 'Invincible' hybrid |
| H. 'Shady Choice' J. & B. Diesen 1998 | R | M | gr | | | 'Torchlight' sport |
| H. 'Shady Lover' Randy Goodwin 2005 | R | SM | gr,crwe | | | unknown |
| H. 'Shalimar' Paul Aden 1983 | R | M | str,gr,ch,y,we | | Y | 'Fragrant Bouquet' x 'Fragrant Candelabra' |
| H. 'Shapur's Sceptre' Alex Malloy 2003 | R | | lgr | PU | | 'Beatrice' hybrid |
| H. 'Shark's Tooth' F. Nyikos 2005 | R | | gr | | | venusta x 'Teaspoon' |
| H. 'Sharmon' Thomas Donahue/AHS 1986 | R | ML | str,ch>gr | | | 'Fortunei' sport |
| H. 'Sharp Dressed Man' Bob Solberg 2005 | R | | w,gre | | | 'Francee' seedling |
| H. 'Sharp Shooter' Belle Gardens 1993 | R | SM | gr | | | 'Spartan Gem' hybrid |
| H. 'Shawmut' Schmid/Malloy 1999 | R | | gr,we | | | 'Allen C. Haskell' sport |
| H. 'Shazaam' Gil Jones/Tony Avent 2007 | R | | dgr,(y>cr)e | | | 'William Lachman' seedling |
| H. 'Sheila Maqueen' P. Bennerup/A. Malloy 2000 | R | M | str,blgr,crw | | | unknown |
| H. 'Shell Bell' L. Jones 1999 | R | | gry>(gry,ye) | | | 'Vanilla Cream' sport |
| H. 'Shelleys' Hodgkin/Brickell 1988 | R | M | gr,naye | PU | | Japan: |
| H. 'Shells at Sea' Anne Arett/AHS 1980 | R | S | gr | | | nakaiana hybrid |
| H. 'Shenandoah Abbey' Alex Malloy 2000 | R | | blgr | | | 'Blue Angel' hybrid |
| H. 'Sherborne Profusion' Eric B. Smith/BHHS 1988 | R | SM | bl | | | |
| H. 'Sherborne Songbird' Eric B. Smith/BHHS 1988 | R | M | bl | | | |
| H. 'Sherborne Swallow' Eric B. Smith/BHHS 1988 | R | M | blgr | | | |
| H. 'Sherborne Swan' Eric B. Smith/BHHS 1988 | R | ML | bl | | | |
| H. 'Sherborne Swift' Eric B. Smith/BHHS 1988 | R | M | bl | | | |
| H. 'Shere Khan' Zilis/Zumbar 1995 | R | S | gr>y,we | | | 'Just So' sport |
| H. 'Sherwood Forest' William & Eleanor Lachman 1993 | R | L | gr | | | 'Carnival' selfed |
| H. 'Shimmering Silk' F. Davis 1996 | R | | dgr | | | unknown |
| H. 'Shining Tot' Paul Aden 1982 | R | SD | dgr | | | venusta x 'Rock Master' |
| H. 'Shiny Penny' B. Solberg 1997 | R | D | y | | | 'Lemon Lime' x 'Shining Tot' |
| H. 'Shirley' Van Wade 1998 | R | M | y,gre | | | unknown |
| H. 'Shirley Levy' Russ O 'Harra 1999 | R | | y | RD | | unknown |
| H. 'Shirofukurin Hime Iwa' Gotemba Nursery/K.Watanabe/P. Ruh 2002 | R | D | gr,we | | | gracillima sport |
| H. 'Shocking Chartreuse' Kevin C. Vaughn 1982 | R | M | chy | | | "Vaughn SG-3" x 'Golden Waffles' |
| H. 'Short and Sweet' Ed Elslager 2004 | R | | | | | 'Whoopee' seedling |
| H. 'Show Piece' G. Krossa/E. Fisher/P. Ruh 1998 | R | | gry>gr | | | unknown |
| H. 'Showboat' William & Eleanor Lachman 1993 | R | ML | dgr,wcre | | | 'Christmas Tree' x 'Lachman 81-9' |
| H. 'Showtime' Paul Aden 1987 | R | M | dgr,(cr>w)e | | Y | 'Fragrant Bouquet' x 'Fragrant Candelabra' |
| H. 'Silberpfeil' Heinz Klose/P. & J. Ruh 2005 | R | SM | blgr | | | unknown |
| H. 'Silent Witness' Rasmussen/Malloy 1997 | R | SM | gr,lgre | | | 'Flamboyant' hybrid |
| H. 'Silk Kimono' Hideko Gowen/Hansen/Benedict 1999 | R | L | gr,ye | | | 'Dorothy Benedict' x montana |
| H. 'Silver and Gold' R. Lydell 1995 | R | | go,we | | | 'Gold Standard' sport |
| H. 'Silver Anniversary' Russ O'Harra/Russ O'Harra Society 1999 | R | L | blgr | | | unknown |
| H. 'Silver Award' F. Williams/Eunice V. Fisher/AHS 1986 | R | XL | blgr | | | unknown |
| H. 'Silver Bay' D. Dean 1999 | R | M | blgr | | | 'Silver Frost' x 'Blue Moon' |
| H. 'Silver Bowl' Eunice V. Fisher/AHS 1986 | R | L | blgr | | | unknown |
| H. 'Silver Chalice' Ed Elslager 2005 | R | | | | | 'Chalice of Gold' sport |
| H. 'Silver Creek Sunshine' Dennis Savory 1996 | R | S | y>gr | | | 'Halcyon' hybrid |
| H. 'Silver Dust' E. Fisher/P. Ruh 1995 | R | M | blgr | | | unknown |
| H. 'Silver Giant' Clarence Owens 1987 | R | XL | siblga | | | 'Mira' hybrid |
| H. 'Silver Lance' Robert P. Savory 1982 | R | SM | blgr,we | | | 'Sentinels' sport |
| H. 'Silver Load' R. Klehm 1999 | R | | grw,dgre | | | 'Silver Streak tetraploid' sport |
| H. 'Silver Mine' Alex Malloy 1999 | R | D | gr,spe,w | | | 'Outhouse Delight' hybrid |
| H. 'Silver Moon' Hans Hansen 2007 | R | | blgr | | | 'Maekawa' x 'Blue Moon' |
| H. 'Silver Rim' Eldren W. Minks 1980 | R | M | sibl | | | 'Tokudama' selfed |
| H. 'Silver Spoon' Olive Baily Langdon 1985 | R | S | w,nalgre | | | 'Butter Rim' sport |
| H. 'Silver Spray' Mr. & Mrs. C. T. Osbourne 1991 | R | M | blgr,we | | | unknown |
| H. 'Silver Streak' Zager/Krossa/AHS 1986 | R | D | wc,dgre | | | |
| H. 'Silver Tiara' Walters Gardens 1988 | R | S | ch>w,ye | | | 'Golden Scepter' sport |
| H. 'Silverado' Kuk's Forest 1987 | R | S | gr,(ch>w)e | | | 'Lancifolia' sport |
| H. 'Silverdale' R. Kaye/H. Klose/P. & J. Ruh 2003 | R | M | bl | | | unknown |
| H. 'Silvery Slugproof' D. Grenfell 1996 | R | SM | blgr | | | sieboldiana x 'Tardiflora' |
| H. 'Simply Sharon' Herb Benedict/Bob Kuk 2004 | R | M | (y>cr),blgre | | | 'Dorothy Benedict' seedling |
| H. 'Singin' the Blues' D. & M. Beilstein 2007 | R | | blgr | | | 'Trail's End' hybrid |
| H. 'Singing in the Rain' Walters Gardens 2006 | R | | blgr,lye | | | 'Blue Umbrellas' sport |
| H. 'Sir Lancelot' Ed Elslager 2005 | R | | | | | 'Little Tykes' sport |
| H. 'Sir Richard' Jim Schwarz 2002 | R | L | str,gr,cr | | | 'Sea Prize' hybrid |
| H. 'Sitting Pretty' Paul Aden 1987 | R | D | y,blgre | | | 'Reiko' x 'Amy Aden' |
| H. 'Sizzler' E. Elslager 2002 | R | | str,gr,w | | | (x 'Sea Prize') selfed |
| H. 'Skinny Dippin' Tony Avent 2006 | R | | gr | | | (('Swoosh' x longissima) x 'Red Neck Heaven') x 'Elvis Lives' |
| H. 'Skookumchuck' Robyn Duback 1998 | R | M | blgr | | | unknown |
| H. 'Sky Blue Waters' Ed Elslager 2005 | R | | | | | (x 'Foxy Doxy') seedling |
| H. 'Sky Dancer' Danny Van Eechaute 2003 | R | M | blgr | PUD | | 'Paradise Red Delight' hybrid |
| H. 'Sky High' Ed Elslager 2005 | R | | | | | "'Dorothy Benedict' F1" seedling |
| H. 'Sky Kissed' Lolita K. Powell 1991 | R | VL | blga | | | sieboldiana 'Elegans' x 'Blue Angel' |
| H. 'Skylight' Bev Stegeman 2001 | R | M | bl | | | "open pollinated seedling of ('Dorothy Benedict' x montana macrophylla) |
| H. 'Skyrocket' Bob Kuk 1999 | R | | goy | | | 'Unforgettable' sport |
| H. 'Skyward' E. Elslager 2000 | R | | dgr,cre | | | 'Dorothy Benedict' x hypoleuca |
| H. 'Sleeping Beauty' Walters Gardens 1997 | R | | blgr,we | | | 'Halcyon' sport |
| H. 'Sleepy Hollow' Alex Malloy 2003 | R | | dgr,gre | PU | | 'Polychrome' sport |
| H. 'Slick Willie' Jerry Hadrava 1996 | R | M | dgr | | | ventricosa x 'Invincible' |
| H. 'Slightly Royal' G. Johnson 2004 | R | | | | | 'Royal Standard' sport |
| H. 'Slim Polly' Frances Williams/AHS 1986 | R | S | gr | | | sieboldii x plantaginea |
| H. 'Small Parts' Danny Van Eechaute 2006 | R | D | gr | | | 'Gummy Bear' seedling |
| H. 'Small Sum' G. R. Goodwin 1996 | R | ML | go | | | 'Sum and Substance' hybrid |
| H. 'Small Talk' Lucille Simpers/Peter Ruh 1991 | R | S | y>gr | | | 'Lancifolia Aurea' hybrid |
| H. 'Smiling Sailor' Charles R. Seaver 1996 | R | DS | gry | | | unknown |
| H. 'Smokerise Frosted Vase' E. Lunsford 1994 | R | L | gagr>gr,nawe | | | 'Frances Williams' x nigrescens |
| H. 'Smokey' Alex Summers/A. Wrede 2006 | R | | dgr | | | longipes var. latifolia 'Urajiro Hachijo' hybrid |
| H. 'Smokey Tokey' E. Elslager 1998 | R | | blgr | | | 'Tokudama' sport |
| H. 'Smooth Sailing' Ed Elslager 2002 | R | L | goy,dgre | | | 'Fascination' x 'Daybreak' |
| H. 'Smoothie' P. Banyai/B. Banyai 1999 | R | | dgr | | | montana hybrid |
| H. 'Snake Eyes' A. Torvinen 2005 | R | | lgr,gre | | | 'Striptease' sport |
| H. 'Snow Cap' Paul Aden 1980 | R | M | blgr,we | | | 'Wide Brim' x 'Royal Rainbow' |
| H. 'Snow Crust' T & Z Nursery/Zilis 1985 | R | ML | gr,we | | | 'Elata' sport |
| H. 'Snow Flakes' Frances Williams/AHS 1986 | R | S | gr | | | sieboldii 'Alba' x plantaginea |
| H. 'Snow Flurry' Kevin C. Vaughn 1973 | R | S | gr,spe,w | | | 'Snow Flakes' selfed |
| H. 'Snow Mound' Skylands Nursery/A. Summers 1968/P. Ruh 1997 | R | S | gr | | | unknown |
| H. 'Snow White' Arett/AHS 1983 | R | SM | w,gre | | | 'Undulata' sport |
| H. 'Snowbird' G. Goodwin 2000 | R | S | gr,we | | | (x 'Bravo') hybrid |
| H. 'Snowbound ' Chet W. Tomkpkins/P. & J. Ruh 2002 | R | ML | gr,we | | | unknown |
| H. 'Snowden' Eric B. Smith 1972/BHHS 1988 | R | L | blgr | | | 'Fortunei Aurea' x sieboldiana |
| H. 'Snowdrift' T&Z Nursery/Mark Zilis 1985 | R | S | w,nadgre | | | 'Francee' sport |
| H. 'Snowstorm' Lucille Simpers 1980 | R | S | gr | | | rectifolia hybrid |
| H. 'So Sweet' Paul Aden 1986 | R | SM | gr,we | | Y | 'Fragrant Bouquet' x 'Aden 462' |
| H. 'Soaring Eagle' E. Elslager 2002 | R | | str,blgr,y,cr | | | (x 'Dorothy Benedict') selfed |
| H. 'Soft Shoulders' T. Avent 1995 | R | S | dgr,cre | | | 'Swoosh' x 'Tardiflora' |
| H. 'Soft Touch' Robert P. Savory 1977 | R | SM | gr | | | nakaiana seedling |
| H. 'Solar Flare' Gardenview Horticultural Park 1981 | R | XL | chy>y | | | unknown |
| H. 'Solo Flight' P. Cross 2001 | R | | dgr | | | 'Glacier Cascade' hybrid |
| H. 'Sombrero' Robert P. Savory 1991 | R | XL | blgr | | Y | 'Blue Umbrellas' x plantaginea |
| H. 'Something Blue' Lucy Simpers/Peter Ruh 1991 | R | ML | blgr | | | 'Blue Beauty' x 'Blue Boy' |
| H. 'Something Different' Pauline Banyai 1990 | R | M | (y>gr),dgre | | | 'Gold Standard' sport |
| H. 'Something Good' Walters Gardens 2000 | R | L | goy, gre | | | 'Sum and Substance' sport |
| H. 'Song Sung Blues' Ed Elslager 2004 | R | | | | | 'Dorothy Benedict' x 'Maekawa' |
| H. 'Songbird' Ed Elslager 2005 | R | | | | | 'Flowersong' seedling |
| H. 'Sookai' J. Hartmann 2002 | R | | blgr,ye | | | 'Sagae' sport |
| H. 'Sophisticated Lady' D. & J. Ward 2000 | R | | gr,crwe | | | 'Pinstripe Sister' hybrid |
| H. 'Soul Brother' R. Mortko 2002 | R | | gr | | | 'Heart and Soul' sport |
| H. 'Southern Comfort' Peter Ruh 1992 | R | M | gr | | | unknown |
| H. 'Southern Pride' Natalee Suggs 1986 | R | S | ye,blgr | | | 'Fascination' x 'Christmas Tree' |
| H. 'Space Odyssey' C. Soules 1997 | R | G | blgr | | | unknown |
| H. 'Spacious Skies' Walden-West/Hyslop 1999 | R | XL | bl | | | 'Sagae' hybrid |
| H. 'Sparkling Burgundy' Robert P. Savory 1982 | R | SM | gr | R | | 'Ginko Craig' hybrid |
| H. 'Sparky' Paul Aden 1987 | R | DS | gr,crye | | | 'Amy Aden' x pulchella |
| H. 'Spartacus' Hans Hansen/Shady Oaks 2007 | R | L | dgr,naye | | | 'Sea Gulf Stream' sport |
| H. 'Spartan Arrow' Randy Goodwin 2000 | R | | dgr | | | unknown |
| H. 'Spartan Flash' Ed Elslager 1998 | R | | str,gr,y,w | | | 'Undulata Albomarginata' sport |
| H. 'Spartan Gem' Pauline Banyai 1989 | R | SM | gr | | | |
| H. 'Spartan Glory' J. Wilkins/S. Wilkins 2000 | R | L | lgr,we | | | 'HB87-1' x 'Elatior' |
| H. 'Special Gift' Eunice V. Fisher 1973 | R | SM | gagr | | | nakaiana hybrid |
| H. 'Special Item' E. Fisher/P. Ruh 1999 | R | M | blgr | | | 'Fortunei Gigantea' hybrid |
| H. 'Special Occasion' J. & S. Wilkins 2003 | R | | dgr | | | unknown |
| H. 'Spellbound' Dick & Jane Ward 2005 | R | | gr,(y>w)e | | | 'Pin Stripe Sister' seedling |
| H. 'Spike Jones' E. Schulz 2002 | R | | gr | | | densa hybrid |
| H. 'Spilt Milk' M. Seaver 1999 | R | ML | str,blgr,w | | | unknown |
| H. 'Spinach Soufflé' Bob Solberg 2006 | R | | blgr,goye | | | 'Garden Treasure' sport |
| H. 'Spingarn's Japan' J. Spingarn/A. Malloy 2000 | R | S | gr | | | unknown |
| H. 'Spinnaker' Charles R. Seaver 1994 | R | L | gr | | | 'Sea Lotus Leaf' hybrid |
| H. 'Spinners' Eric Smith /BHHS 1988 | R | ML | dgr,cre | | | 'Fortunei' sport |
| H. 'Spirit of St Louis' P. Cross 2006 | R | | gr | | | 'Azure Snow' seedling |
| H. 'Spit Shine' Russ O'Harra 1986 | R | ML | gr | | | plantaginea hybrid |
| H. 'Spitfire' Alex Malloy 2002 | R | | str,lgr,w | | | 'Flamboyant' hybrid |
| H. 'Splashed Leather' Goodwin 1996 | R | M | gr,str,y | | | unknown |
| H. 'Splendid Reign' I. Johnson 2001 | R | | gr,grgoe | | | 'Regal Splendor' sport |
| H. 'Splendid Sarah' D. & J. Ward 2005 | R | L | lgr,crwe | | | 'Pin Stripe Sister' seedling |
| H. 'Splendor' E. Elslager 2000 | R | | gry,mot,dgr | STR | | 'Galaxy' x hypoleuca |
| H. 'Splish Splash' Paul Aden 1980 | R | M | str,gr,y | | | 'Fascination' x 'Intrigue' |
| H. 'Sportscaster' Ed Elslager 2004 | R | | | | | 'Dorothy Benedict' seedling |
| H. 'Sporty' Ed Elslager 2004 | R | | | | | 'Sea Prize' seedling |
| H. 'Spotlight' Wilkins 1995 | R | VL | y | | | 'Fort Knox' x 'Elatior' |
| H. 'Spring Break' Stuart Asch 2000 | R | | lgr,cre | | | 'Dorothy Benedict' x (x 'Dorothy Benedict') |
| H. 'Spring Fever' J. Van Nostrand 2005 | R | | y>ch | | | 'William Lachman' seedling |
| H. 'Spring Fling' Roy Herold 2000 | R | ML | dgr,crwe | | | 'Christmas Tree' x 'Donahue's Piecrust' |
| H. 'Spring Grove' C. Mack/P. & J. Ruh 2002 | R | | gr | | | unknown |
| H. 'Spring Ivory' Clarence O. Lantis 1982 | R | S | w>lgr | | | 'Wogon' hybrid |
| H. 'Spring Lace' Calvin Helsley 1998 | R | S | lgr,nadgre | | | 'Chartreuse Wiggles' x 'Starburst' |
| H. 'Spring Sensation' Lucille Simpers/Peter Ruh 1991 | R | M | y>gr | | | 'Decorata' sport |
| H. 'Spring Shower' Bob Solberg 2007 | R | | blgr | | | (sieboldiana x 'One Man's Treasure') seedling |
| H. 'Spritzer' Paul Aden 1986 | R | M | y,gre | | | 'Aden 349' x 'Green Fountain' |
| H. 'Spumoni' Ed Elslager 2004 | R | | | | | 'Sea Prize' seedling |
| H. 'Spun Silk' Ursula Syré-Herz 1990 | R | M | y | | | |
| H. 'Spun Sulphur' Russ O'Harra 1986 | R | S | y | | | 'Subcrocea' hybrid |
| H. 'Squash Blossom' C. Tompkins/P. & J. Ruh 2005 | R | | blgr,grye | | | unknown |
| H. 'Squash Casserole' Tony Avent 1995 | R | ML | y | | | 'Hirao Elite' x 'August Moon' |
| H. 'Squash Edge' T. Donahue/A. Summers/P. & J. Ruh 2001 | R | L | blgr,ye | | | sieboldiana 'Elegans' sport |
| H. 'Squiggles' Paul Aden 1978 | R | S | ly>w,gre | | | 'Yellow Splash' x 'Neat Splash' |
| H. 'Squire Rich' Kuk's Forest 1988 | R | M | ygr | | | |
| H. 'St. Nicholas' S. & S. Zolock 2007 | R | | gr | | | "seedling" x "seedling" |
| H. 'Stained Glass' H. Hansen 1999 | R | | y,dgre | | Y+ | 'Guacamole' sport |
| H. 'Stand-up America' Ed Elslager 2005 | R | | | | | 'Dorothy Benedict' seedling |
| H. 'Standard Deviation' C. Helsley 1998 | R | | str,lgr,y,cr | | | 'Gold Standard' sport |
| H. 'Standing Ovation' Kevin C. Vaughn 1987 | R | L | gr,ye | | | |
| H. 'Standing Tall' Ed Elslager 2004 | R | | | | | (x 'Dorothy Benedict') selfed |
| H. 'Star Spangled Banner' E. Elslager 2002 | R | | str,blgr,y | | | (x 'Galaxy') selfed |
| H. 'Star Struck' J. & J. Wilkins 1995 | R | | (go>w),blgre | | | (x 'William Lachman') sport |
| H. 'Star-kissed' Mark Zilis/L. Poliska 2006 | R | L | (go>gr),goye | | | 'Stardust' sport |
| H. 'Starboard Light' Charles R. Seaver 1994 | R | ML | dy | | | 'Komodo Dragon' hybrid |
| H. 'Starburst' Mervin C. Eisel 1973 | R | S | str,blgr,we | | | 'Beatrice' hybrid |
| H. 'Stardust' Dick & Jane Ward 1998 | R | L | y | | | 'White Vision' x montana f. macrophylla |
| H. 'Stargazer' Tony Avent 2007 | R | | gr,(crw>y)e | | | ((x 'Beatrice') x yingeri) x ventricosa 'Aureomarginata' |
| H. 'Starker Yellow Leaf' Carl Starker/Peter Ruh 1989 | R | L | (yc,gre)>gr | | | |
| H. 'Starlight' Mervin C. Eisel 1973 | R | S | w,dgre | | | 'Fortunei' sport |
| H. 'Starry Starry Night' J. Wilkins/S. Wilkins 2000 | R | | dgr | | | 'Blue June' x 'Tot Tot' |
| H. 'Stars and Stripes' R. Simmering 2000 | R | | str,blgr,cr | | | 'Color Fantasy' hybrid |
| H. 'Starship' Mark Zilis 2004 | R | M | gr,(y>cr)e | | | 'Captain Kirk' sport |
| H. 'Statue of Liberty' Tony Avent 2007 | R | | dgr | | | ('Fragrant Blue' x 'Halcyon') x plantaginea |
| H. 'Stearn's Beauty' Frances Williams/P.Ruh 1995 | R | | blgr | | | unknown |
| H. 'Steel Canopy' Stuart Asch 2000 | R | | blgr | | | (x 'Dorothy Benedict') hybrid |
| H. 'Steely Dan' Tony Avent 2007 | R | | blgr | | | 'Korean Snow' x 'Abiqua Drinking Gourd' |
| H. 'Stefan Edward' V. Wade/E. Elslager 1998 | R | | blgr | | | unknown |
| H. 'Stellar by Starlight' E.Elslager 2000 | R | | str,gr,cr | | | 'Dorothy Benedict' x hypoleuca |
| H. 'Stephen' Henry Weissenberger 1986 | R | S | bl | | | 'Blue Cadet' hybrid |
| H. 'Stetson' Walters Gardens 1997 | R | M | dgr,ye | | | 'Wide Brim' sport |
| H. 'Steve Moldovan' Rachel Soucek 2004 | R | G | bl | | | 'Blue Vision' x 'Fantastic' |
| H. 'Steven P. Register' S. Chamberlain 2004 | R | | | | | 'Josephine' seedling |
| H. 'Stiletto' Paul Aden 1987 | R | DS | gr,we | | | 'Amy Aden' x pulchella 'Variegated' |
| H. 'Stimulation' Tony Avent 2006 | R | | dgr | | | (((Red Neck HeavenxInvincible)F1)xElvis Lives) x (Elvis LivesxTreasure Island) |
| H. 'Stingray' R. Herold 2000 | R | | gr | | | kikutii x montana |
| H. 'Stirfry' Herb & Dorothy Benedict 1990 | R | SM | gr | | | 'Holly's Honey' selfed |
| H. 'Stitch in Time' Rob Mortko 2004 | R | SM | dgr,ye | | | 'Summer Breeze' sport |
| H. 'Stone's Valentine' David Stone/Peter Ruh 1989 | R | S | y | | | |
| H. 'Stone's Yellow Leaf' D. Stone/P. & J. Ruh 2004 | R | S | y | | | unknown |
| H. 'Stonewall' Alex Malloy 2001 | R | | blgr>dgr | | | sieboldiana 'Elegans' hybrid |
| H. 'Stormy Seas' Mark Zilis 2004 | R | | | | | 'Frances Williams' x ('Marilyn' x 'Tardiflora') |
| H. 'Stormy Weather' G. Johnson 2004 | R | | gr | | | 'Holly's Honey' seedling |
| H. 'Straight Flush' D. Savory 2004 | R | | | | | 'Royal Flush' sport |
| H. 'Straka Gold' Clarence Owens 1994 | R | XL | y | | | 'Gold Regal' x montana |
| H. 'Stratosphere' A. Malloy 2001 | R | | goy,lgre | | | 'High Noon' sport |
| H. 'Strawberry Delight' H. Sugita/Peter Ruh 1998 | R | M | gr | R | | longipes x pycnophylla |
| H. 'Strawberry Parfait' D. Dean 2004 | R | | | | | ((('Swoosh' x 'June') selfed) x 'June') selfed |
| H. 'Strawberry Ripple' Ed Elslager 2004 | R | | | | | 'Kuk's Concoction' seedling |
| H. 'Streaker Ahoy' Ed Elslager 2004 | R | | | | | 'Sea Prize' seedling |
| H. 'Streaking Frenzy' Ed Elslager 2004 | R | | | | | (x 'Dorothy Benedict') selfed |
| H. 'Streaking Party' Ed Elslager 2005 | R | | | | | (x 'Pin Stripe Sister') seedling |
| H. 'Streaky Streak' E. Elslager 1999 | R | | blgr,str,cr,w | STR | | 'William Lachman' hybrid |
| H. 'Streets of Gold' Rod Lysne 2006 | R | | ch>goy | | | 'Blue Mammoth' x 'Golden Medaillon' |
| H. 'Striker' Ran Lydell 2000 | R | S | gr,nawe | | | venusta sport |
| H. 'String Bikini' J. Hawes/A. Summers/R. Snyder 2000 | R | | dgr,yc | | | 'Gold Standard' sport |
| H. 'String of Pearls' E. Elslager 2001 | R | | str,gr,y,w | | | 'Goddess of Athena' x 'Maekawa' |
| H. 'Strip Poker' Nancy Burlingame/Westen New York Hosta Society 2004 | R | | | | | 'Striptease' sport |
| H. 'Striped Canvas' C. Seaver 1996 | R | M | str,gr,w,y | | | 'Designer Genes' x 'Sea Angel' |
| H. 'Stripped Naked' J. Van Ostrand/P. Postlewaite 2004 | R | | w,dgre | | | 'Striptease' sport |
| H. 'Stripper' L. Klinkhamer/Danny Van Eechaute 2002 | R | | gr,we | | | 'Striptease' sport |
| H. 'Striptease' C & R Thompson 1991 | R | ML | dgr,chc,w | | | 'Gold Standard' sport |
| H. 'Sturtevant' G. Sturtevant/F. Williams/T. Donahue/A.Summers/P. & J. Ruh 2005 | R | L | blgr | | | unknown |
| H. 'Subcrocea' AHS 1987 | R | MS | ygr | | | |
| H. 'Subterranean Pool' D. Dean 1999 | R | | blgr | | | 'Urajiro Hachijo' x 'Blue Clown' |
| H. 'Subtlety' Alan Tower/Tower Perennial Gardens 2003 | R | S | lgr,brye | | | 'Little Aurora' sport |
| H. 'Sue' H. & J. Millhorn 1999 | R | | w,gre | | | unknown |
| H. 'Sugar and Cream' Mark R. Zilis 1984 | R | ML | dgr,we | | Y | 'Honeybells' sport |
| H. 'Sugar and Spice' Mark Zilis 2003 | R | | dgr,crwe | | Y | 'Invincible' sport |
| H. 'Sugar Babe' Solberg 1996 | R | S | dgr,we | | Y | 'Iron Gate Supreme' x 'Saishu Jima' |
| H. 'Sugar Daddy' Mark Zilis/M. Vanous 2003 | R | | bl,cre | | | 'Big Daddy' sport |
| H. 'Sugar Mama' M. Zilis/M. Vanous 2004 | R | S | (y>cr),gre | | | 'Big Daddy' sport |
| H. 'Sugar Pie' R. Snyder 1998 | R | | gr,we | | | rohdeifolia sport |
| H. 'Sugar Plum Fairy' Briggs Nursery 1987 | R | D | dgr | | | gracillima selection |
| H. 'Sultan's Smoke' E. Elslager 2001 | R | | str,gr,y | | | 'Galaxy' x 'Incredible Hunk' |
| H. 'Sultana' William W. Zumbar 1988 | R | S | dgr,ye | | | 'Little Aurora' sport |
| H. 'Sum and Substance' Paul Aden 1980 | R | XL | lgr>chgo | | | unknown |
| H. 'Sum Cup-o-Joe' Ed Elslager 2000 | R | VL | str,gr,cr,cre | | | 'Sum and Substance' sport |
| H. 'Sum It Up' M. Zilis 1999 | R | VL | gr,naye | | | 'Sum and Substance' sport |
| H. 'Sum Like it Hot' J. Vrable/E. Elslager 2003 | R | | gr,str,y,w | | | 'Sum and Substance' sport |
| H. 'Sum More Magic' S. Doggett 2006 | R | | gr | | | 'Sum and Substance' seedling |
| H. 'Sum of All' Mark Zilis 2003 | R | XL | dgr,brye | | | 'Sum and Substance' sport |
| H. 'Sum Piecrust' Ed Elslager 1999 | R | | gr | G | | 'Sum and Substance' sport |
| H. 'Sum Streaker' Ed Elslager 2005 | R | | y,str,gry,cr | | | 'Sum and Substance' sport |
| H. 'Sum Sunfish' C. Sauve 2004 | R | | | | | 'Sum and Substance' sport |
| H. 'Sum Total' Sandra Pedrick 1991 | R | XL | dgr,ye | | | 'Sum and Substance' sport |
| H. 'Sum Upper Crust' Ed Elslager 2004 | R | | | | | 'Sum and Substance' sport |
| H. 'Sumi' Steve C. Moldovan 1983 | R | XL | sibl | | | sieboldiana 'Elegans' hybrid |
| H. 'Summa Cum Laude' R. Lysne 2006 | R | | lgr, lye | | | 'Sum and Substance' sport |
| H. 'Summer Breeze' Marc Zilis/J. Diesen 1999 | R | LM | dgr,ye | | | 'Summer Music' sport |
| H. 'Summer Dress' Ursula Syré-Herz 1990 | R | M | gry>y | | | 'August Moon' x kikutii |
| H. 'Summer Fragrance' Kevin C. Vaughn 1983 | R | L | gr,crwe | | Y+ | 'Vaughn 73-2' x plantaginea |
| H. 'Summer Gold' S. Hamblin/F. Williams/P. Ruh 1998 | R | M | y>gry | | | unknown |
| H. 'Summer Joy' Roy Klehm 1998 | R | M | w,blgre | | | 'Blue Splendor' sport |
| H. 'Summer Lovin' Mark Zilis/J. Mullins 2004 | R | | dgr,ye | | | 'Summer Breeze' sport |
| H. 'Summer Music' Roy Klehm 1998 | R | M | w,ygre | | | 'Shade Master' sport |
| H. 'Summer Olympics' Mark Zilis 2004 | R | | go | | | 'Alex Summers' sport |
| H. 'Summer Rapture' S. Tylinski 2003 | R | | y | | | 'Fascination' x 'Summer Music' |
| H. 'Summer Serenade' Roy Klehm 1998 | R | ML | y,dgre | | | 'Piedmont Gold' sport |
| H. 'Summer Snow' Mrs. Ralph Cannon 1978 | R | M | blgr,we | | | sieboldiana x 'Tokudama' |
| H. 'Summer Squall' Bob Solberg 2007 | R | | blgr | | | (sieboldiana x 'One Man's Treasure') seedling |
| H. 'Summer Warrior' Randy Goodwin 2000 | R | L | gry | | | unknown |
| H. 'Sun Banner' Russ O'Harra/R. O'Harra Hosta Society 1999 | R | | gr,ye | | | 'Sun Power' sport |
| H. 'Sun Catcher' Bob Solberg 2004 | R | M | y>gr | | | 'Ogon Tsushima' x yingeri |
| H. 'Sun Chaser' Ed Elslager 2004 | R | | | | | "'Dorothy Benedict' F-1" x hypoleuca |
| H. 'Sun Disk' M. Seaver 2004 | R | | gry | | | 'Sea Lotus Leaf' seedling |
| H. 'Sun Drop' B. Banyai 1999 | R | | gr,ye | | | 'Gold Drop' sport |
| H. 'Sun Glow' Paul Aden 1974 | R | M | y | | | 'Aspen Gold' selfed |
| H. 'Sun Kissed' Bob Solberg 2003 | R | M | gry,we | | Y | 'Sweet Sunshine' sport |
| H. 'Sun Power' Paul Aden 1986 | R | ML | goy | | | 'Aden 217' x 'Aden 219' |
| H. 'Sun Shower' Bob Solberg 2007 | R | | y>lgr | | | (sieboldiana x 'One Man's Treasure') seedling |
| H. 'Sun Worshipper' Bob Solberg 2006 | R | SM | y | R | | 'Sun Catcher' x 'Whiskey Sour' |
| H. 'Sunami' Clarence Soules 1990 | R | L | gr | | | montana hybrid |
| H. 'Sundance' Walters Gardens 1984 | R | ML | dgr,na(y>cr)e | | | 'Fortunei Aoki' sport |
| H. 'Sundowner' Ed Elslager 2005 | R | | | | | 'Sunset Strip' sport |
| H. 'Sunfish Bett' C. Sauve 2004 | R | | | | | 'Sun Power' sport |
| H. 'Sunfish Blue' C. Sauve 2004 | R | | | | | unknown |
| H. 'Sunfish Stripe' C. Sauve 2004 | R | | | | | 'Gold Standard' sport |
| H. 'Sunlight' Frances Williams/Peter Ruh 2001 | R | L | go | | | 'Frances Williams' sport |
| H. 'Sunlight Child' Herb Benedict 1991 | R | DS | ly | | | 'Golden Hawk' selfed |
| H. 'Sunlight Cinderella' Dennis P. Savory 2000 | R | L | goy,dgre | | | 'Sunlight Sister' sport |
| H. 'Sunlight Sister' Elizabeth Nesmith/AHS 1986 | R | MLL | y | | | 'Elata' sport |
| H. 'Sunny Delight' R. Solberg/ M. Zilis 2000 | R | L | goy | | Y | 'Sweet Susan' x 'Tokudama Aureonebulosa' |
| H. 'Sunny Disposition' F. Nyikos 2001 | R | | go | | | ventricosa x 'Birchwood Parky's Gold' |
| H. 'Sunny Isle' P. Ruh 1997 | R | | | | | unknown |
| H. 'Sunny Side Up' Tony Avent 2007 | R | | goy>ch | | | 'Spritzer' x yingeri |
| H. 'Sunny Smiles' Chet W. Tompkins 1990/P. & J. Ruh 2001 | R | M | lgr>y,we | | | 'Old Gold Edge' hybrid |
| H. 'Sunny Tiara' R. Flink/Savory's Garden 2006 | R | | gry | | | 'Golden Tiara' sport |
| H. 'Sunnybrook' D. Stone/P. Ruh/P. Banyai 1987 | R | M | blgr,ye | | | unknown |
| H. 'Sunnybrook Sunshine' Q & Z Nursery/Pete Ruh 1999 | R | M | y | | | 'Sunnybrook' sport |
| H. 'Sunrise Crinkles' S. Dapra 2000 | R | | gr | | | sieboldiana 'Elegans' hybrid |
| H. 'Sunset Strip' Ed Elslager 2005 | R | | blgr,str,lgr,gry | | | unknown |
| H. 'Sunshine Glory' Kevin C. Vaughn 1982 | R | L | y/ch,nawe | | | 'William Lachman' x 'Golden Waffles' |
| H. 'Sunshine Kid' Paul Aden 1980 | R | S | str,y,w,ch | | | 'Fascination' x 'High Fat Cream' |
| H. 'Sunspray' R. Snyder 2002 | R | | str,dgr,w,crwe | | | 'Sundance' sport |
| H. 'Super Hero' S. Tylinski/A. Malloy 2005 | R | | | | | "seedling" x 'Filagree' |
| H. 'Super Nova' M. Zilis 1999 | R | ML | yc,ble | | | 'Aurora Borealis' sport |
| H. 'Super Star' Ed Elslager 2000 | R | | str,gr,y | STR | | 'Dorothy Benedict' x 'Maekawa' |
| H. 'Super Streak' Kevin C. Vaughn 1982 | R | M | gr,wc | | | "Variegated hybrid" selfed |
| H. 'Supersonic' K. & L. Anderson 1996 | R | | dgr,ye | | | 'Sum and Substance' sport |
| H. 'Supreme Expectations' E. Elslager 2002 | R | | y,blgre | | | 'Great Expectations' sport |
| H. 'Surf and Turf' Ed Elslager 1999 | R | L | gr | | | 'Dorothy Benedict' x 'Incredible Hunk' |
| H. 'Surfer Dude' Tony Avent 2007 | R | | gr | | Y | rupifraga x plantaginea |
| H. 'Surfer Girl' Chick Wasitis/Bridgewood Gardens 2000 | R | M | dgr | | | unknown |
| H. 'Surprise' Frances Williams/AHS 1986 | R | S | dgr | | Y | unknown |
| H. 'Surprised by Joy' A. Malloy 1998 | R | S | crw,dgre | | | 'Flamboyant' x venusta |
| H. 'Surrender' Randy Goodwin 2005 | R | | gr,ye | | | |
| H. 'Susan-elizabeth' Suzzane Xavier-Sakr/Alexizz Xavier 2001 | R | | blgr | | | 'Frances Williams' sport |
| H. 'Susie Chamberlain' S. Chamberlain 2006 | R | | gr | | | unknown |
| H. 'Susy' Jamison Harrison/AHS 1986 | R | SM | dgr | | | unknown |
| H. 'Suzuki Thumbnail' Kichigoro Suzuki/Pete Ruh 1987 | R | D | gr | | | venusta sport or hybrid |
| H. 'Swamp Monster' William & Eleanor Lachman 1991 | R | L | dgr | | | 'Sea Monster' hybrid |
| H. 'Swamp Thing' Tony Avent 2005 | R | | gr,goye | | | (x "blue sieboldiana seedling") x yingeri |
| H. 'Swan Lake' H. Sugita/P. Ruh 1998 | R | | blgr | | | kiyosumiensis x pycnophylla |
| H. 'Sweet and Low' Ed Elslager 2004 | R | | | | | (x 'Dorothy Benedict') selfed |
| H. 'Sweet Christy' Van Wade 1999 | R | | str,lgr,w | | Y | unknown |
| H. 'Sweet Diversion' G. Johnson 2004 | R | | | | Y | "'Neat Splash' F-1" x 'Love Pat' |
| H. 'Sweet Home Chicago' M. Zilis/Northern Illinois Hosta Society/P. & J. Ruh 2002 | R | M | ygr,gre | | | 'Birchwood Parky's Gold' sport |
| H. 'Sweet Jill' Ralph H. Benedict 1986 | R | S | str,gre,w | | Y | 'Iron Gate Supreme' sport |
| H. 'Sweet Lucy' W. Cook 2000 | R | | str,gr,w | | | unknown |
| H. 'Sweet Marjorie' Ralph H. Benedict 1983 | R | ML | gr | | Y | 'Ginko Craig' x plantaginea |
| H. 'Sweet Serenity' Mark R. Zilis 1990 | R | M | gr,nawe | | Y | 'Sweet Susan' sport |
| H. 'Sweet Standard' Mark R. Zilis 1984 | R | ML | str,gr,w | | Y | 'Honeybells' sport |
| H. 'Sweet Sunshine' R. Solberg 1997 | R | SM | y | | Y | 'Sweet Susan' x 'Tokudama Aureonebulosa' |
| H. 'Sweet Susan' Frances Williams 1958/Connie Williams 1986 | R | ML | gr | | Y | sieboldii x plantaginea |
| H. 'Sweet Tater Pie' Tony Avent 1995 | R | S | y>ch | | | 'Gold Scepter' x yingeri |
| H. 'Sweet Thing' Sebright Gardens 2004 | R | | | | Y | 'So Sweet' sport |
| H. 'Sweet William' Stuart Asch 2004 | R | | | | | (x 'Dorothy Benedict') selfed |
| H. 'Sweet Winifred' Ralph H. Benedict 1984 | R | SM | gr | | Y | plantaginea hybrid |
| H. 'Sweetie' Paul Aden 1988 | R | M | y,we | | Y | 'Fragrant Bouquet' x 'Fragrant Candelabra' |
| H. 'Sweetness' Mark Zilis 2003 | R | | gr | | Y | 'So Sweet' sport |
| H. 'Swirling Hearts' M. Zilis/P. & J. Ruh 2002 | R | M | gagr | | | 'Donahue Piecrust' x 'Heartleaf' |
| H. 'Swiss Lady' M. Dietwyler/L. Hirsbrunner 2005 | R | | | | | sieboldiana 'Elegans' sport |
| H. 'Swoosh' Paul Aden 1978 | R | SM | str,gr,w,y | | | 'Yellow Splash' x 'Neat Splash' |
| H. 'Sybil' Mike Pinterics 2002 | R | | w,gre | | | 'Brenda's Beauty' sport |
| H. 'Sydney's Spunk' R. Keller 2007 | R | SM | gr,brye | | | 'Fortunei Obscura' sport |