| Hostaname | RG | SZ | Leaf color | P | F | Origin |
| H. 'Wagner's Petite' Wally Wagner 1985 | R | S | gr | | | unknown |
| H. 'Wagon Wheels' Eldren W. Minks 1971 | R | ML | blgr,ye | | | 'Golden Nugget' sport |
| H. 'Wagtail' Eric B. Smith/BHHS 1988 | R | DSM | blgr | | | |
| H. 'Wahoo' Paul Aden 1976 | R | SM | str | | | 'Tokudama Aureonebulosa' x 'Tokudama Flavocircinalis' |
| H. 'Walden Green' Walden West/C. Purtymun 1999 | R | | dgr | | | unknown |
| H. 'Wallstreet Classic' Stuart Asch 2000 | R | | gr,crye | | | 'Fascination' hybrid |
| H. 'Waning Moon' L. Maroushek 1999 | R | | goy | | | unknown |
| H. 'War Paint' Naylor Creek Nursery 2005 | R | L | (y>gr),gre | | | 'Niagara Falls' sport |
| H. 'War Party' R. Goodwin 2000 | R | M | blgr | | | unknown |
| H. 'War Path' Randy Goodwin 2005 | R | S | dgr | | | (x 'Splashed Leather') sport |
| H. 'Warwick Choice' Gil Jones 1993 | R | ML | gr,we | | | 'William Lachman' hybrid |
| H. 'Warwick Comet' L. Jones/L. Jones 1999 | R | M | w,dgre | | | 'Christmas Tree' x 'Dorset Blue' |
| H. 'Warwick Cup' Gil Jones 1993 | R | M | blgr | | | 'Tokudama' hybrid |
| H. 'Warwick Edge' Gil Jones 1993 | R | S | blgr,we | | | 'William Lachman' x nakaiana |
| H. 'Warwick Essence' Gil Jones 1993 | R | L | bl | | Y+ | 'Northern Halo' x plantaginea |
| H. 'Wasabi' C. W. Nixon 2006 | R | | gry | | | |
| H. 'Wassup' Clyde Crockett 2000 | R | L | lgr | | | 'Ruffles' hybrid |
| H. 'Watercolours' B. Sligh 2000 | R | | gr,mot,y | | | 'Sum and Substance' sport |
| H. 'Waterford' Steve C. Moldovan 1983 | R | L | sibl | | | |
| H. 'Watermark' Danny Van Eechaute 2005 | R | | gry,grwat | GR | | 'August Moon' sport |
| H. 'Waterworks' Alex Malloy 2003 | R | | gr,str,lgr,w | | | 'Loleta Powell' x 'Bizarre' |
| H. 'Wave Runner' J. Van Ostrand 2007 | R | | gry,ye | | | 'Squash Casserole' sport |
| H. 'Waving Winds' William & Eleanor Lachman 1991 | R | SM | dgr,cre | | | 'Galaxy' selfed |
| H. 'Waving Wuffles' T. Avent 1995 | R | ML | gr | | | ventricosa hybrid |
| H. 'Wayne' G. Krossa/P. Ruh 1999 | R | | | | | 'Fortunei Hyacinthina' sport |
| H. 'Wayside Blue' Peter Ruh 1989 | R | ML | blgr | | | 'Tokudama' seedling |
| H. 'Website' Loleta Powell 1999 | R | VL | gr | | | 'Love Pat' x 'Puckered Giant' |
| H. 'Weihenstephan' Müssel 1970/Klose 1977/P. & J. Ruh 2003 | R | S | gr | | | sieboldii 'Alba' hybrid |
| H. 'Weser' Heinz Klose 1988/P. & J. Ruh 2003 | R | SM | bl | | | tardiflora hybrid |
| H. 'Wheaton Blue' M. Zilis 1999 | R | ML | blgr | | | 'Paul's Glory' sport |
| H. 'Whimsey' D. Dean 2000 | R | | goy | | | 'Midas Touch' hybrid |
| H. 'Whipped Cream' T&Z Nursery/Mark R. Zilis 1988 | R | S | w,nagre | | Y | 'Honeybells' sport |
| H. 'Whippersnapper' Belle Gardens 1994 | R | Mini | gr,cre | | | 'Masquerade' hybrid |
| H. 'Whirlaway' J. Murray 2004 | R | | | | | 'Whirlwind' sport |
| H. 'Whirling Dervish' Mark Zilis/R. Solberg 2003 | R | | gr,we | | | 'Whirlwind' sport |
| H. 'Whirlwind' John Kulpa 1989 | R | SML | w>gr,dgre | | | 'Fortunei Hyacinthina' sport |
| H. 'Whiskey Sour' B. Solberg 2002 | R | | y | | | 'Ogon Tsushima' x yingeri |
| H. 'White Bikini' R. Whitmore 2002 | R | | w,dgre | | | 'Striptease' sport |
| H. 'White Ceiling' Danny Van Eechaute 2006 | R | | dgr | | | 'Urajiro Hachijo' seedling |
| H. 'White Charger' Paul Aden 1986 | R | M | gr | | | 'Aden 614' x 'Aden 618' |
| H. 'White Christmas' Gus Krossa 1971/Palmer/Ruh 1999 | R | SML | (w>cr),gre | | | 'Fortunei' sport |
| H. 'White Colossus' Paul Aden 1978 | R | ML | w,gre | | | 'Bold One' x 'Flamboyant' |
| H. 'White Dove' H. & D. Benedict 1995 | R | S | gr,we | | | 'Beatrice' selfed |
| H. 'White Elephant' R. Franks/Bob Solberg 2007 | R | | w,gre | | | 'White Christmas' sport |
| H. 'White Feather' Gerard Heemskerk 2005 | R | SM | w>gr | | | 'Undulata' sport |
| H. 'White Heron' H. Sugita/P. Ruh/P. & J. Ruh 2001 | R | | dgr | | | kiyosumiensis x pycnophylla |
| H. 'White Hot' Walters Gardens 1998 | R | S | cr,ye | RD | | 'Sea Fire' sport |
| H. 'White Knight' Springhill Nursery/P. Ruh 2004 | R | ML | gr | | Y+ | unknown |
| H. 'White Lightning' Janet Shugart/Jane & Bernie Diesen 1994 | R | M | ch>y,we | | | 'Janet' sport |
| H. 'White Magic' Paul Aden 1978 | R | M | w,irygre | | | 'White Christmas' x 'Flamboyant' |
| H. 'White Mule' Alex Summers/Peter Ruh 1998 | R | S | gr | | | sieboldii sport |
| H. 'White Necklace' C.Owens 1999 | R | ML | gr,we | | | 'Marbled White' sport |
| H. 'White Ray' Eldren W. Minks 1974 | R | L | w,dgre | | | 'Undulata Univittata' sport |
| H. 'White Shoulders' Walters Gardens 1988 | R | M | gr,we | | Y | plantaginea sport |
| H. 'White Surprise' Loleta Powell 1995 | R | M | str,ygr>w,dgre | | | 'Fools Gold' sport |
| H. 'White Swan' H. & D. Benedict 1995 | R | S | w,gre | | | 'Beatrice' selfed |
| H. 'White Trumpets' Williams/K. J. W. Hensen 1983 | R | S | gr | | | sieboldii hybrid |
| H. 'White Vision' Paul Aden 1978 | R | ML | y | | | 'Sun Glow' x 'Gold Cup' |
| H. 'White Wall Tire' Tony Avent 1995 | R | S | w>wgr>gr | | | 'Outhouse Delight' hybrid |
| H. 'Whitewater' A. Tower/Tower Perennial Gardens 2002 | R | S | w>gr,spe | | | unknown |
| H. 'Whoopee' Paul Aden 1980 | R | M | str,y,w,ch | | | 'Flamboyant' x 'Fascination' |
| H. 'Whopper' E. Elslager 2002 | R | | dgr,grye | | | (x 'Dorothy Benedict') selfed |
| H. 'Wide Brim' Paul Aden 1979 | R | ML | dgr,(y>cr)e | | | 'Bold One' x 'Bold Ribbons' |
| H. 'Wild Blue Yonder' E. Elslager 2001 | R | | blgr,grye | | | 'Sea Prize' x hypoleuca |
| H. 'Wild World of Sportsman' Ed Elslager 2004 | R | | | | | 'Galaxy' seedling |
| H. 'Wildfire' E. Elslager 1999 | R | | y | | | 'Sea Prize' hybrid |
| H. 'Will of Fortune' R. Livingston/Stuart Asch 2003 | R | | blgr | | | 'Ritz' hybrid |
| H. 'Willamette' C. Tompkins/C. Purtymun/P/ & J. Ruh 2003 | R | | lgr | | Y | plantaginea x 'Royal Standard' |
| H. 'William Bedard' Scott Crabb 2004 | R | | gr,(cry>w)e | | | 'Let's Streak' x longissima |
| H. 'William Lachman' Kevin C. Vaughn 1981 | R | ML | str,gr,w,cr,y | | | "Vaughn 73-2" x 'Frances Williams' |
| H. 'Willy Nilly' G. Holly 1963/P. Ruh 1996 | R | ML | bl | | | unknown |
| H. 'Wily Willy' E. Elslager 1998 | R | | dgr | | | unknown |
| H. 'Winfield Blue' Marc Zilis 1999 | R | SM | bl | | | unknown |
| H. 'Winfield Gold' M. Zilis/P. & J. Ruh 2002 | R | S | y | | | 'Sea Dream' sport |
| H. 'Winfield Mist' M. Zilis 2003 | R | | str,blgr,w,blgre | | | 'Winfield Blue' sport |
| H. 'Wings of Angels' S. & S. Zolock 2006 | R | | blgr | | | "seedling" x "seedling" |
| H. 'Wings of Faith' R. Snyder 1999 | R | | gr | | | unknown |
| H. 'Winners Circle' G. Johnson 2004 | R | | | | | "'Neat Splash' F-1" x 'Love Pat' |
| H. 'Winning Edge' T&Z Nursery/Mark Zilis 1988 | R | M | blgr,we | | | 'Tokudama Aureonebulosa' hybrid |
| H. 'Winsome' Dick & Jane Ward 1996 | R | D | gr,we | | | 'Pin Stripe Sister' hybrid |
| H. 'Winter Snow' Winterberry Farms/J. Anderson 2003 | R | VL | gr,(cr>w)e | | | 'Sum and Substance' sport |
| H. 'Winter Warrior' Randy Goodwin 2005 | R | | dgr,crwe | | | (x 'Fascination') sport |
| H. 'Winter's Edge' L. Bisschop 2007 | R | | lgr,grye | | | 'Winter Lightning' sport |
| H. 'Wintergreen' Jim Dishon 1994 | R | M | dgr,crwe | | | 'Sea Prize' hybrid |
| H. 'Witches Brew' Gardenview Horticultural Park/ Ross 1981 | R | L | gr | | | |
| H. 'Wizard's Turban' J. Hadrava 1996 | R | | | | | 'Galaxy' x 'Wahoo' |
| H. 'Wogon' Japan/AHS 1986 | R | S | y | RD | | sieboldii sport |
| H. 'Wolcott' David Stone/Piedmont Gardens 1982 | R | L | (str,y,gr)>gr | | | sieboldiana seedling |
| H. 'Wolverine' Jim & Jill Wilkins 1995 | R | SM | blgr,crye | | | 'Splash F5 seedling' x 'Dorset Blue' |
| H. 'Wonderful' Randy Goodwin 2005 | R | | y>gry | | | 'Little Wonder' seedling |
| H. 'Wonderland' Alex Malloy 2005 | R | S | gr,cre | GR | | 'Magic Colors' sport |
| H. 'Wooden Nickel' Walden West & J. Hyslop 1999 | R | | dgr,grye | | | 'Abiqua Recluse' sport |
| H. 'Woodland Blue' Lucille Simpers/Peter Ruh 1993 | R | L | blgr | | | sieboldiana hybrid |
| H. 'Woodland Elf' Don Dean 2005 | R | D | lgr,crwe | | | 'Little Wonder' x 'Popo' |
| H. 'Woodland Green' Lucille Simpers/Peter Ruh 1990 | R | M | gr | | | |
| H. 'Woolly Mammoth' M. Zilis/K. Queller-Zilis 2003 | R | VL | blgr,goe | | | 'Blue Mammoth' sport |
| H. 'Work of Art' G. Kamp 2002 | R | | y>w,nadgre | | | 'Gold Standard' sport |
| H. 'World Cup' Doug Beilstein/Mark Zilis 2006 | R | | goy | | | 'Komodo Dragon' x 'Super Bowl' |
| H. 'Worldly Treasure' Randy Goodwin 2005 | R | | dgr | | | 'Gaijin' seedling |
| H. 'Wrede, White and Blue' A. Wrede/ A. Pollock 2005 | R | | blgr | PI | | 'Miss Susie' hybrid |
| H. 'Wrinkles and Crinkles' Lawrence D. Englerth 1985 | R | ML | gr | | | |
| H. 'Wylde Green Cream' Stratton 1996 | R | S | y,dgre | | | 'Vanilla Cream' sport |