| Hostaname | RG | SZ | Leaf color | P | F | Origin |
| H. 'Nakaimo' Imperial Garden of Japan/AHS 1986 | R | M | gr | | | capitata hybrid |
| H. 'Nanc' R. Snyder 2003 | R | | str,gr,w,crwe | | | unknown |
| H. 'Nancy' A. Tower 2005 | R | SM | goy | | | unknown |
| H. 'Nancy Lindsay' Grenfell/BHHS 1988 | R | ML | ygr>gr | | | 'Fortunei' sport |
| H. 'Nancy Minks' Eldren W. Minks 1983 | R | M | cr,blgre | | | unknown |
| H. 'Naomi' Heinz Klose/P. Ruh 2006 | R | | bl | | | |
| H. 'Natalie' B. Silvers 2002 | R | | crw,blgre | | | 'Dorothy' sport |
| H. 'Nate the Great' R. Solberg 2003 | R | | blgr | | | nigrescens x 'Tokudama Aureonebulosa' |
| H. 'Nathan Nirvana' S. Asch 2003 | R | | dgr,crwe | | | 'William Lachman' x 'Permanent Wave' |
| H. 'National Velvet' Bob Kuk 1990 | R | SM | dgr | | | (x tardiflora) sport |
| H. 'Neat and Tidy' Lucille Simpers 1980 | R | ML | blgr | | | 'Golden Circles' hybrid |
| H. 'Neat Splash' Paul Aden 1978 | R | SM | str,dgr,crw | | | 'Yellow Splash' x (x 'Fortunei Robusta') |
| H. 'Neat Splash Rim' AHS 1986 | R | SM | gr,crwe | | | 'Neat Splash' sport |
| H. 'Neeta' C. Owens 1999 | R | | dgr,ye | | | 'Sunlight Sister' sport |
| H. 'Neferteti' Hans Hansen 2003 | R | | goy,dgre | | | 'King Tut' sport |
| H. 'Nellie Grey' A. Malloy 2002 | R | | lgr | | | 'Don Quixote' hybrid |
| H. 'Neptune' Hans Hansen 2006 | R | | blgr | | | ('Maekawa' x 'Halcyon') x 'Salute' |
| H. 'Nesmith's Giant' Elizabeth Nesmith/Peter Ruh 1994 | R | L | dgr | | | sieboldiana x sieboldiana 'Elegans' |
| H. 'New Moon' Ran Lydell 1995 | R | | y,brgre | | | 'August Clouds' x 'Fortunei Hyacinthina' |
| H. 'New Tradition' Mark R. Zilis 1988 | R | S | w,nagre | | | 'Lancifolia' sport |
| H. 'New Wave' Doug Lohman/Mark Zilis 1988 | R | SM | gr | | | 'Sum and Substance' x venusta |
| H. 'Newberry Gold' Carter/Holmes/N. Plemmons 1996 | R | | ygo | | | 'Tokudama Aureonebulosa' hybrid |
| H. 'Niagara Falls' Bill Brincka/Olga Petryszyn 1991 | R | XL | dgr | | | montana f. macrophylla x 'Sea Drift' |
| H. 'Niagara on the Lake' J. B. Cumpson 2003 | R | | str,gr,y | | | 'Elatior' sport |
| H. 'Nicholas James' P. Banyai/E. Elslager 1996 | R | | y | | | unknown |
| H. 'Nick Balash' Clarence Owens 1994 | R | S | dgr | | | unknown |
| H. 'Nickelodeon' T. Schmid 1998 | R | | gr,ye | | | 'Summer Music' sport |
| H. 'Nicola' Alan Eason 1984 | R | SM | gr | | | tardiflora hybrid |
| H. 'Nifty Fifty' Ralph H. Benedict 1986 | R | L | blgr,(y>cr)e | | | 'Dorothy Benedict' sport |
| H. 'Night and Day' D. & J. Ward 2000 | R | | dgr,crwe | | | (x 'Dorothy Benedict') x montana f. macrophylla |
| H. 'Night before Christmas' John L. Machen 1994 | R | ML | w,dgre | | | 'White Christmas' sport |
| H. 'Night Shades' R. Snyder 2000 | R | | str,dgr,y | | | 'Edge of Night' sport |
| H. 'Night Shift' Dennis P. Savory 1991 | R | L | y,dgre | | | 'Daybreak' sport |
| H. 'Night Train' D. & J. Ward 2005 | R | | blgr | | | unknown |
| H. 'Nightlife' Mark Zilis 2004 | R | | blgr>dgr | | Y | 'Invincible' x 'Elegans' |
| H. 'Nippers' Rick Goodenough 2006 | R | S | dgr | | | 'Fascination' x 'Black Beauty' |
| H. 'No Frills' Lucille Simpers/Peter Ruh 1991 | R | M | blgr | | | 'Blue Boy' hybrid |
| H. 'Noah's Rainbow' R. Snyder 1997 | R | | str,cr,gr,cre | | | 'Green Gold' sport |
| H. 'Nobility' Walters Gardens 2000 | R | S | cr,blgre | | | 'Hadspen Blue' sport |
| H. 'Noble Eagle' Ed Elslager 2004 | R | | | | | 'William Lachman' seedling |
| H. 'Noel' Ralph H. Benedict 1983 | R | DS | w,gre | | | 'Beatrice' sport |
| H. 'Nokogiriyama' Japan/P. Ruh 2006 | R | M | dgr | | | unknown |
| H. 'None Lovelier' E. Elslager 2003 | R | | gr,grye | RD | | 'Neat Splash' x 'Maekawa' |
| H. 'Nonsuch' D. Grenfell 1996 | R | | blgr | | | unknown |
| H. 'Nooner' Herb & Dorothy Benedict 1991 | R | M | dgr,(cry>w)e | | | 'Seduction' x 'Purple Romance' |
| H. 'Nordatlantik' E. Smith/H. Klose/P. Ruh 1997 | R | | blgr | | | 'Dorset Charm' x 'Dorset Flair' |
| H. 'Nordic Racer' B. Olson 1999 | R | | str,blgr,w,we | | | 'Crepe Suzette' x 'Blue Moon' |
| H. 'North Hills' Alex Summers/AHS 1986 | R | M | dgr,we | | | 'Fortunei Albomarginata' sport |
| H. 'North Pacific High' C. Tompkins/Beckman/P. & J. Ruh 2001 | R | L | blgr | | | unknown |
| H. 'North Point' R. Lydell 1998 | R | | blgr | | | unknown |
| H. 'Northern Exposure' Walters Gardens 1997 | R | ML | blgr,(y>cr)e | | | sieboldiana 'Elegans' sport |
| H. 'Northern Halo' Walters Gardens 1984 | R | L | blgr,we | | | sieboldiana 'Elegans' sport |
| H. 'Northern Heritage' D. Dean/G. & D. Stark 1999 | R | | str,blgr,w,gry | | | 'Color Fantasy' x 'Big Daddy' |
| H. 'Northern Lights' Walters Gardens 1984 | R | M | crw,blgre | | | sieboldiana 'Elegans' sport |
| H. 'Northern Mist' Clarence Falstad 1988 | R | ML | str,blgr,w | | | sieboldiana 'Elegans' sport |
| H. 'Northern Star' Walters Gardens/C. Falstad 1993 | R | L | blgr,ye | | | sieboldiana 'Elegans' sport |
| H. 'Northern Sunray' Walters Gardens 1987 | R | L | w>gr,blgre | | | sieboldiana 'Elegans' sport |
| H. 'Northland Queen' D. Dean 2004 | R | | | | | 'Color Fantasy' x 'Silver Frost' |
| H. 'Norwalk Chartreuse' N. Stark 1995 | R | ML | chy | | | unknown |
| H. 'Nougat' Vitro Westland/Danny Van Eechaute 2004 | R | | w,spe,gr | | | 'Independence' sport |
| H. 'Number One' Richard W. Lighty 1987 | R | S | blgr | | | venusta hybrid |
| H. 'Nutty Professor' M. Metz/Song Sparrow Perennial Farm/R. Klehm 2004 | R | L | dgr,(y>cr)e | | | 'Maekawa' sport |
| H. 'NYPD Blue' Ed Elslager 2004 | R | | blgr,grye | | | 'Sea Prize' seedling |